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Tytuł:
Applicability of selected groups of roughness parameters for description of surface layer of flat-top “plateau” structures
Autorzy:
Kowalski, M.
Wiśniewska, M.
Karolczak, P.
Stancekova, D.
Powiązania:
https://bibliotekanauki.pl/articles/957943.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
roughness parameters
flat-top “plateau” surface
honing
Opis:
The aim of this study is to determine the usefulness of selected 2D roughness parameters for detecting changes of geometric features and the rate the quality of the surface generated in the process of honing combustion engines sleeves. The paper presents the importance of mathematical modeling of virtual surface topography with different participation of determined and random factor. The possibilities of modeling the flat-top “plateau” surface roughness characteristic for honed surface was showed. Suitability of application of the roughness parameter for description of the selected variable characteristics of roughness profiles were determined using the correlation coefficient and the additional evaluation index designated as t. Indicator t was used for comparing the percentage change of the tested value of modeled profile characteristics with changes selected for evaluation of the roughness parameters 2D.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 32-39
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface quality assessment following high performance cutting of AZ91HP magnesium alloy
Autorzy:
Gziut, O.
Kuczmaszewski, J.
Zagórski, I.
Powiązania:
https://bibliotekanauki.pl/articles/407125.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
machining
magnesium alloys
roughness parameters
manufacturing processes
HSM
HPC
Opis:
The article presents test results of surface roughness after AZ91HP magnesium alloy machining with variable technological parameters (vc, fz, ap) as well as tool geometry (γ= 5◦ and γ = 30◦). Two carbide end mills were applied during the tests. Roughness analysis was conveyed at the end face (Ra, Rq, RzDIN, Rt, Ry, RSm) and lateral face (Ra, Rz, RSm) of the tested sample. A decrease of roughness parameters (for increasing vc) as well as an increase (with growing fz) was observed in the lateral face tests. Similar interrelations were noticed for end face of the sample. Lower roughness parameters values were recorded for tool rake angle equal to γ = 5◦.
Źródło:
Management and Production Engineering Review; 2015, 6, 1; 4-9
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of workpiece surface condition based on cutting tool vibrations during machining
Autorzy:
Józwik, J.
Mika, D.
Powiązania:
https://bibliotekanauki.pl/articles/102959.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
vibration
diagnostics
machining
turning
surface geometric structure
roughness parameters
Opis:
The paper presents functional relationships between surface geometry parameters, feedrate and vibrations level in the radial direction of the workpiece. Time characteristics of the acceleration of cutting tool vibration registered during C45 steel and stainless steel machining for separate axes (X, Y, Z) were presented as a function of feedrate f. During the tests surface geometric accuracy assessment was performed and 3D surface roughness parameters were determined. The Sz parameter was selected for the analysis, which was then collated with RMS vibration acceleration and feedrate f. The Sz parameter indirectly provides information on peak to valley height and is characterised by high generalising potential i.e. it is highly correlated to other surface and volume parameters of surface roughness. Test results presented in this paper may constitute a valuable source of information considering the influence of vibrations on geometric accuracy of elements for engineers designing technological processes.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 26; 57-65
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tribological aspects of some materials abrasive-water jet cutting
Autorzy:
Holka, H.
Matuszewski, M.
Musiał, J.
Styp-Rekowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/100143.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
abrasive water jet machining
cutting
roughness parameters
steel
plastics
syenite
Opis:
This article presents results of comparative studies into the roughness (very significant tribological factor) of surfaces cut using the AWJM method. Cutting was performed on samples made of quenched and tampered alloy steel (1.2080), plastic (polyamide PA6) and mineral material (syenite). Variable parameters in the cutting process included: jet pressure and feed. As a result of measurements involving selected roughness parameters (Ra, Rz and Rq), it was discovered that the majority of variable factors had a significant effect on the cut surface roughness. It was also demonstrated that the contact method measurements cannot be performed with regard to plastics because the results are characterised by a very great scatter of results values, making them unreliable.
Źródło:
Journal of Machine Engineering; 2012, 12, 2; 46-52
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The study of linear correlation between surface roughness parameters and adhesion of flame sprayed coatings
Autorzy:
Mikuliszyn, J.
Starosta, R.
Powiązania:
https://bibliotekanauki.pl/articles/246506.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
flame spraying
adhesion
roughness parameters
Ni-5%Al coating
correlation
Opis:
Adhesion is one of the reasons for limiting the use of thermally sprayed coatings. Many factors influence the adhesion of thermally sprayed coatings, for example: quality of the workmanship of surface preparation, method of thermal spraying, processing parameters, and the temperature of the preliminary preheat substrate, properties of the substrate and coating materials. Another one is the surface roughness. Attempts are made to use surface roughness parameters (e.g. Ra, Rz, Rq, Rku, Rsk) for prediction of adhesion of thermally sprayed coatings. However, most often these attempts end in failure. This article discusses the task of assessing the linear correlation between the twelve parameters of roughness or material ratio of various surface profiles and strength bond of coatings. For analysis, the following parameters were selected: Rz, Ra, Rq, Rsk, Rt, RSm, Rp, Rv, Rku, Rmr (50%), Rk, Rpk, Rvk. The steel substrates (S185) were machined by abrasive machining. The surface roughness of the steel substrate ranged Rz = 1.89-5.34 mm. Nickel-based coatings were applied by flame spraying by the Casto Dyn DS 8000 torch. Adhesion of coatings was measured by pull – off method. The flame sprayed coatings were characterized by adhesion to the steel substrate in the range of from 5.53 MPa to 8.28 MPa. The highest value of the correlation coefficient (Pearson – R)between parameters Rp, Rpk, and adhesion of thermally sprayed coatings were found. The coefficient R was equalto the 0.83, and the coefficient of determination R2 = 0.7. The lowest value of the correlation coefficient was found for the Rku roughness parameter amounting to 0.37. In the measurements carried out, it can be concluded that the prediction of adhesion of the coatings according to the roughness of the substrate, should be carried out by use the parameters characterizing the peaks height of roughness profile.
Źródło:
Journal of KONES; 2016, 23, 1; 223-229
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of cutting inserts geometric on surface roughness of steel applied to sea water pump shafts
Autorzy:
Labuda, W.
Powiązania:
https://bibliotekanauki.pl/articles/244988.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
turning dynamometer
surface roughness parameters
stainless steel
marine pump shaft
Opis:
One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process, the technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the research results of pump shaft pins finish turning. The research was performed on a roller 60 mm in diameter made of X5CrNi18-10 steel. The finish tooling of pump shaft pins was carry out on a universal CDS 6250 BX-1000 centre lathe. The finish lathing process was carried out by means of Sandvik Coromant cutting tool with replaceable inserts. In the research of lathing process used standard inserts (MF), inserts with increased tolerance (UM) and inserts with Wiper technology (WF). During lathing, the optimal machining parameters were used. The cutting process was performed at entering angle of 90°. The process of lathing used cutting tool dynamometer DKM 2010. During the research, the effect of cutting insert geometric and optimal cutting parameters on the surface roughness of steel applied to marine pumps shaft pins was determined.
Źródło:
Journal of KONES; 2015, 22, 3; 133-140
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The metrology of ground concrete surfaces morphology with 3D laser scanner
Autorzy:
Sadowski, L.
Mathia, T. G.
Powiązania:
https://bibliotekanauki.pl/articles/407237.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
concrete
metrology
morphology
3D laser scanner
grinding
roughness parameters
Opis:
This paper is devoted to machining of concrete by grinding and the metrology of its surface morphologies. The surface morphology is still open problem from metrological as well as mathematical morphology points of views. In order to understand better abrasive process the raw morphologic state is compared with the ground concrete surfaces. The most significant results are presented in the form of profiles, 3D isometric views and isotropy analysis. Several 3D surface roughness parameters were calculated.
Źródło:
Management and Production Engineering Review; 2015, 6, 2; 40-44
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thickness evaluation of the carbon coatings manufactured on magnesium alloys using optical profiler
Autorzy:
Gołąbczak, M.
Jacquet, P.
Powiązania:
https://bibliotekanauki.pl/articles/99752.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
AZ31 magnesium alloy
PACVD technology
carbon coating
optical profiler
roughness parameters
Opis:
One of the problems in identification of carbon nanocoatings is measurement of their thickness. There are a lot of methods which allow for determination of thickness i.e. SEM analysis of cross section of sample with manufactured coating, nanoindentation analysis with using DSP (Digital Signal Processing) method, roughness analysis with using different kind of profilers. In this paper the technology of manufacturing of carbon coatings on AZ31 magnesium light alloy has been depicted and optical profiler has been used for thickness evaluation of these coating. Obtained results allowed for precise estimation of manufactured carbon coatings thickness. In this way it was also possible to compare obtained thickness results with thickness evaluated by other methods.
Źródło:
Journal of Machine Engineering; 2012, 12, 2; 29-36
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comprehensive analysis of the product’s operational properties formation considering machining technology
Autorzy:
Stupnytskyy, Vadym
Hrytsay, Ihor
Powiązania:
https://bibliotekanauki.pl/articles/139963.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
functional-oriented technology
operational properties
wear resistance
friction
tribo-contact
profile roughness parameters
Opis:
Product Lifecycle Management (PLM) system requires consideration and ensuring efficient operating conditions for the most loaded parts in the product, not only at the product’s design stage, but also at the production stage. Operational properties of the product can be significantly improved if we take into consideration the formation of the functional surfaces wear resistance parameters already at the planning stage of the technological process structure and parameters of the product’s machining. The method of constructing predictive models of the influence of the technological process structure on the formation of a complex of product’s operational properties is described in the article. The relative index of operational wear resistance of the machined surface, which is characterized by the use of different variants of the structure and parameters of this surface treatment, depends on the microtopographic state of the surface layer and the presence of cutting-induced residual stress. On the example of the eject pin machining it has been shown how the change in the structure of the manufacturing process from grinding to the turning by tool with the tungsten carbide insert affects the predicted wear resistance of the machined functional surface.
Źródło:
Archive of Mechanical Engineering; 2020, LXVII, 2; 149-167
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena parametrów chropowatości powierzchni toczonych otworów w kołach zębatych obrabianych nagniataniem
Evaluation of surface roughness parameters of turned gear wheels holes machined by ball burnishing
Autorzy:
Dobrzyński, M.
Przybylski, W.
Waszczur, P.
Powiązania:
https://bibliotekanauki.pl/articles/189882.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
toczenie na twardo
nagniatanie
parametry chropowatości powierzchni
hard part turning
burnishing
surface roughness parameters
Opis:
W artykule zaprezentowano wyniki z badań eksperymentalnych dotyczących przygotowania powierzchni do obróbki wykończeniowej nagniataniem. Badania dotyczyły obróbki materiałów w stanie utwardzonym po hartowaniu. Analizowano wpływ parametrów toczenia na twardo na uzyskiwane wartości parametrów chropowatości powierzchni jako wejściowych przed procesem nagniatania.
The paper presents the results of experimental studies of surface preparation for burnishing process. The study is concerned with machining of hard parts. The influence of hard turning parameters on obtained surface roughness rates is analysed as the input factor of burnishing process.
Źródło:
Tribologia; 2011, 6; 61-68
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the correlation between the porosity of plant granular materials and the selected parameters of surface texture
Badania nad korelacją porowatości sypkich materiałów roślinnych z wybranymi parametrami warstwy wierzchniej
Autorzy:
Wojcik, A.
Frączek, J.
Powiązania:
https://bibliotekanauki.pl/articles/971350.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
3D scanning
surface roughness parameters
granular materials
skanowanie 3D
topografia powierzchni
materiały sypkie
Opis:
The issues concerning porosity of granular materials, especially plant materials, are considered very important matters in respect of their transport, storage, precise dosing, and tribological properties. The classic method of measuring porosity requires specialized equipment and takes time, thus often being of little use in dynamic production processes. Therefore, there is a growing need for developing new methods for fast porosity measurement. In the article, the authors present an attempt to define a correlation between the selected parameters of the surface texture of plant granular materials and their porosities. To digitize the surface, an optical 3D scanner and specialized software for analysis of the surface topography were used. The results should provide a basis for the development of innovative methods for measuring porosity based on digital image processing (DIA).
Zagadnienia porowatości materiałów sypkich, w tym w szczególności materiałów roślinnych, są bardzo istotnym elementem związanym z ich transportem, przechowywaniem, precyzyjnym dozowaniem. Klasyczne metody pomiaru tej porowatości wymagają specjalistycznej aparatury i są czasochłonne, a zatem często są mało przydatne w dynamicznych procesach produkcyjnych. Istotne staje się więc opracowanie nowych metod szybkiego pomiaru porowatości. W artykule autorzy przedstawiają próbę określenia korelacji wybranych parametrów warstwy wierzchniej złoża sypkich materiałów roślinnych z jego porowatością. Do akwizycji złoża wykorzystano skaner optyczny 3D oraz specjalistyczne oprogramowanie do analizy topografii powierzchni. Uzyskane wyniki powinny dać podstawę do opracowania innowacyjnej metody pomiaru porowatości opartej o Digital Image Analysis (DIA).
Źródło:
Tribologia; 2016, 270, 6; 179-189
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metodyka oceny zdolności klasyfikacyjnej parametrów charakteryzujących cechy stereometryczne nierówności powierzchni
Methodology for evaluation of classification abilities of parameters characterizing stereometry features of surface irregularities
Autorzy:
Kacalak, W.
Szafraniec, F.
Tomkowski, R.
Lipiński, D.
Łukianowicz, C.
Powiązania:
https://bibliotekanauki.pl/articles/154160.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
parametry chropowatości
zdolność klasyfikacyjna
cechy stereometryczne powierzchni
roughness parameters
ability of classification
stereometry features of surface
Opis:
W pracy opracowano metodykę wyboru parametrów do kompleksowej oceny cech stereometrycznych powierzchni. Przeprowadzono analizy zdolności klasyfikacyjnej parametrów. Wykazano, że wybierając parametry do klasyfikacji zbioru należy uwzględnić: zdolność klasyfikacyjną, przydatność technologiczną oraz łatwość interpretacji, pomimo zdolności klasyfikacyjnej wielu parametrów. Przedstawiono nowe parametry i metody klasyfikacji parametrów na podstawie cech stereometrycznych.
The increase in requirements for accuracy and properties of elements, minimisation of the wear of materials, mass and dimensions of elements, the increase in load capacity and endurance, and also the development of manufacturing technology, lead to the development of many measurement methods and equipment to carry them out as well as to increase the number of parameters for use in evaluation of the surface stereometry features. Taking into account new requirements, a new system for evaluation of the surface stereometry features was developed. The system consists of a collectionof evaluation methods and applications to complex analysis and surface evaluation. In this paper a methodology for selecting parameters for complex evaluation of the surface topography features is presented. Analysis of the classification ability of parameters was performed. It was proved that when selecting parameters for the classification of a collection one should consider: classification ability, technological usability and ease of interpretation in spite of classification ability of many parameters. New parameters and methods for classification of parameters on the basis of the stereometry features are presented.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 5, 5; 542-546
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In situ-formed bacterial exopolysaccharide (EPS) as a potential carrier for anchorage-dependent cell cultures
Autorzy:
Komorowski, Piotr
Kołodziejczyk, Agnieszka
Makowski, Krzysztof
Kotarba, Sylwia
Walkowiak, Bogdan
Powiązania:
https://bibliotekanauki.pl/articles/1844871.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
bacterial exopolysaccharides
dextran- -based “microcarriers”
scanning electron microscopy
atomic force microscopy
roughness parameters
three-dimensional cell culture
Opis:
The study involved the use of a bacterial strain isolated from environmental samples which produce the biopolymer in the form of pellets in the submerged culture. This material (bacterial exopolysaccharide) is produced by bacteria of the Komogateibacter xylinus which are prevalent in the environment. The aim of this study was to characterize bacterial exopolysaccharides and commercial dextran-based “microcarriers” in terms of their roughness and cell culture effects, including the morphology and viability of the human hybridoma vascular endothelial cell line EA.hy926. The pellets were characterized using scanning electron microscopy (SEM) and atomic for¬ce microscopy (AFM). The resulting structures were used for cell culture of adherent cells (anchorage¬-dependent cells). At the same time, the cultures with commercial, dextran-based “microcarriers” were carried out for comparative purposes. After com¬pletion of the cell culture (24 hours of culture), the cellulose and commercial “carriers” were analyzed using SEM and AFM. Finally, the obtained cell dens¬ities (fluorescence labelling) and their morphological characteristics (SEM) were compared. The obtained results strongly support the applicability of bacterial exopolysaccharide (EPS) in tissue engineering to build innovative 3D scaffolds for cell culture, the more so that it is technologically possible to produce EPS as spatially complex structure
Źródło:
Engineering of Biomaterials; 2021, 24, 159; 18-23
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differences in Roughness Parameter Values from Skid and Skidless Contact Stylus Profilometers
Autorzy:
Grochalski, Karol
Mendak, Michał
Jakubowicz, Michał
Gapiński, Bartosz
Swojak, Natalia
Wieczorowski, Michał
Krawczyk, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/2024198.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
contact profilometer
portable profilometer
roughness parameters
skid devices
skidless devices
profilometr kontaktowy
profilometr przenośny
parametry chropowatości
urządzenia poślizgowe
urządzenia bezpoślizgowe
Opis:
Contact stylus profilometry is the leading surface texture measuring method in many manufacturing industries. For years it has been unmatched in terms of accuracy and reliability. Advancements in technology have led to the improvements in the profilometer design. A stylus can either have a built in skid or be skidless. In this study, the influence of skid on the measurement accuracy and repeatability was evaluated. Four different contact stylus profilometers were used to measure three standard roughness artifacts each. Every set of measurements consisted of 50 repetitions of the same profile, with the same parameters. Out of these profiles, five roughness parameters were calculated and were subjected to a statistical analysis. Relative errors of these parameters were also considered and presented individually for each roughness standard. Researchers found differences in the measurement results dispersion of various roughness parameters between the three roughness standards. The presented results of the measurements clearly indicated that there is a dispersion of the obtained values for the older type of contact stylus profilometer (P1, skid). The skidless portable devices, P2 and P3, have better measurement resolution, which results in a noticeably lower dispersion of measured values. A tabletop, stationary device utilizes a skidless measuring probe. It has both the best resolution and the highest rigidity, which results in the lowest dispersion of measured values. The lowest relative error of the Ra parameter was determined for the P2 device (9.2%) and the highest was determined for the P3 device (72.6%).
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 1; 58-70
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyznaczanie korytarzy przewietrzających przy użyciu metody morfometrycznej dla wybranego fragmentu miasta Łodzi
Detection of ventilation paths using morphometric method in the selected part of Lodz
Autorzy:
Bochenek, A.
Klemm, K.
Powiązania:
https://bibliotekanauki.pl/articles/390550.pdf
Data publikacji:
2016
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
korytarze przewietrzające
metoda morfometryczna
wskaźniki
szorstkość podłoża
planowanie przestrzenne
tereny zurbanizowane
ventilation channel
morphometric methods
roughness parameters
spatial
planning
urban areas
Opis:
W pracy podjęto próbę wyznaczenia terenów stanowiących potencjalne korytarze przewietrzające warunkujące prawidłowe funkcjonowanie systemu aeracyjnego miasta. Badanie zostało przeprowadzone przy użyciu jednej z najpopularniejszych metod – morfometrycznej, ze względu na niski koszt pozyskania danych oraz wysoką precyzję otrzymywanych wyników. Z uwagi na dominujący kierunek napływu wiatru, analizami objęto dowietrzny fragment miasta Łodzi. Pierwszy etap opracowania objął analizę podstawowych parametrów szorstkości terenu, tj. chropowatości podłoża (zo), przemieszczenia płaszczyzny zerowej (zd) oraz porowatości w obrębie warstwy dachowej (P). Na podstawie uzyskanych wyników oraz przyjętych kryteriów prawidłowego funkcjonowania korytarzy przewietrzających wyznaczono osiem obszarów swobodnego napływu powietrza do miasta.
The aim of the paper was an indication of potential ventilation paths which affect proper functioning of the cities aerial system. The research was conducted using the most popular method – morphometric for the sake of low cost data gathering and high precision of final results. Due to the wind’s dominant direction, an analysis covered a windward part of Lodz. The first part of the research included an analysis of the basic roughness parameters such as: roughness length (zo), zero plane displacement height (zd) and porosity of the urban canopy layer (P). Based on the obtained results and taking into account ventilation paths criteria eight areas were designated which provide a free flow of air to the city.
Źródło:
Budownictwo i Architektura; 2016, 15, 4; 139-151
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 33

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