Temat: environmental wind engineering - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparative analysis of numerical and experimental studies of the airflow around the sample of urban development
Autorzy:: Gumowski, K.
Olszewski, O.
Poćwierz, M.
Zielonko-Jung, K.
Powiązania:: https://bibliotekanauki.pl/articles/200297.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: environmental wind engineering
airflow around buildings
CFD simulation
k-ε realizable model of turbulence
inżynieria wiatrowa
środowisko
przepływ powietrza wokół budynków
symulacja CFD
Opis:: In this paper, on the background of a short overview of the recent advances in the field of Environmental Wind Engineering (EWE), a comparison of wind tunnel experiment and numerical simulation for some cases of airflow around an urban layout have been reported. The purpose of the study is quantitative and qualitative comparison of measurements in the wind tunnel as well as numerical simulation using Ansys Fluent software. The study is concerned mostly with the analysis of parameters which are essential in the building industry, such as pressure and velocity fields. In the numerical analysis the k-ε realizable model of turbulence with the basic model of boundary layer – Standard Wall Treatment, were used. Particular attention has been paid to accurate depiction of the conditions on the inlet and the selection of suitable computing.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 729-737
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Problem of Airflow Around Building Clusters in Different Configurations
Autorzy:: Jędrzejewski, M.
Poćwierz, M.
Zielonko-Jung, K.
Powiązania:: https://bibliotekanauki.pl/articles/139849.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: environmental wind engineering
airflow around buildings
damage mechanics
CFD simulation
k-ε realizable model of turbulence
RSM model of turbulence
inżynieria wiatrowa
przepływ powietrza wokół budynków
mechanika uszkodzeń
symulacja obliczeniowej dynamiki płynów CFD
model turbulencji k-ε realizable
model turbulencji RSM
Opis:: In the paper, the authors discuss the construction of a model of an exemplary urban layout. Numerical simulation has been performed by means of a commercial software Fluent using two different turbulence models: the popular k-ε realizable one, and the Reynolds Stress Model (RSM), which is still being developed. The former is a 2-equations model, while the latter – is a RSM model – that consists of 7 equations. The studies have shown that, in this specific case, a more complex model of turbulence is not necessary. The results obtained with this model are not more accurate than the ones obtained using the RKE model. The model, scale 1:400, was tested in a wind tunnel. The pressure measurement near buildings, oil visualization and scour technique were undertaken and described accordingly. Measurements gave the quantitative and qualitative information describing the nature of the flow. Finally, the data were compared with the results of the experiments performed. The pressure coefficients resulting from the experiment were compared with the coefficients obtained from the numerical simulation. At the same time velocity maps and streamlines obtained from the calculations were combined with the results of the oil visualisation and scour technique.
Źródło:: Archive of Mechanical Engineering; 2017, LXIV, 3; 401-418
0004-0738
Pojawia się w:: Archive of Mechanical Engineering
Dostawca treści:: Biblioteka Nauki

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