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Wyszukujesz frazę "dynamic simulator" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Development of a Simulation Model for Controlling and Improving the Productivity of Batch Reactors
Autorzy:
Henini, G.
Souahi, F.
Laidani, Y.
Powiązania:
https://bibliotekanauki.pl/articles/779240.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
batch chemical reactor
thermal control
dynamic simulator
mono-fluid
heating and cooling system
Opis:
This paper describes the development of a dynamic simulator model for a jacketed batch reactor equipped with a mono-fluid heating/cooling system. The Mono-fluid flows at constant flow-rate through the jacketed reactor. The heating and cooling are assured respectively by electrical resistance and two plate heat exchangers. A detailed description of the equations leading to the development of simulation model is presented. The model is based on writing the equations of the mass balance and the heat balance for the reactor and the thermal loop in unsteady state. To validate the simulation model, we first studied the thermal behavior of the reaction mixture during heating and cooling, using water as the reaction mixture. We then considered the consecutive chemical reaction of the synthesis of cyclopentanediol from cyclopentadiene by studying the yield of this reaction. The results show that heating the reaction mixture increases significantly the yield of this synthesis reaction.
Źródło:
Polish Journal of Chemical Technology; 2013, 15, 1; 78-87
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postępowanie podczas wyposażania obiektów zabytkowych we włókiennicze wyroby wyposażenia wnętrz
Autorzy:
Małozięć, D.
Koniuch, A.
Powiązania:
https://bibliotekanauki.pl/articles/373730.pdf
Data publikacji:
2007
Wydawca:
Centrum Naukowo-Badawcze Ochrony Przeciwpożarowej im. Józefa Tuliszkowskiego
Tematy:
obiekt zabytkowy
wyroby włókiennicze
zagrożenie pożarowe
bezpieczeństwo
program FDS
historic building
textiles
fire hazard
safety
Fire Dynamic Simulator program
Opis:
W niniejszym artykule przedstawiono efekt realizacji jednego z etapów projektu badawczego - Decyzja Nr 464/E-148/SPB/COST/KG/DWM 85/2005-2006 „Trudno zapalne wyroby włókiennicze ograniczające zagrożenie pożarowe w obiektach zabytkowych” w ramach Akcji COST C 17 „Built Heritage: Fire Loss to Historic Buildings”.
This article contains result of a certain stage of research project - Decision Nr 464/E-148/SPB/COST/KG/DWM 85/2005-2006 “Non-flammable textile fabrics restrict fore hazard in building monuments” participating in Action COST C 17 „Built Heritage: Fire Loss to Historic Buildings”.
Źródło:
Bezpieczeństwo i Technika Pożarnicza; 2007, 3; 171-193
1895-8443
Pojawia się w:
Bezpieczeństwo i Technika Pożarnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring and Identification of DP Operators Behavioural Traits and Common Errors During Simulator Training
Autorzy:
Bogachenko, Y.
Pipchenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/1841528.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Maritime Education and Training
Dynamic Positioning
simulator training
Dynamic Positioning Operator
IMO Guidelines
Opis:
The article presents factors influencing decision making by Dynamic Positioning Operator (DPO) and statistics of the DPOs behaviour in an emergency situation. Considering that supply operation is performed by a DP vessel at a distance comparable to its width of the hull to the installation, unit, or another vessel, the thruster failure may lead to a rapidly developing incident such as collision, pollution, or human injuries. Based on the IMO guidelines on formal safety assessment authors suggested a risk model of platform supply operation in dynamic positioning mode. It is shown that different approaches shall be applied for rule-making and active decision support applications. While rulemaking can be mainly based on retrospective incident-based data, decision support shall be developed on the basis of the dynamic state of the system. Therefore, it is necessary to understand the nature of the human element in the specific operation to build up proper technological and organizational barriers to prevent the forthcoming critical error.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 2; 337-342
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic modeling of the isoamyl acetate reactive distillation process
Autorzy:
Ali, S. S.
Hossain, SK. S.
Asif, M.
Powiązania:
https://bibliotekanauki.pl/articles/778351.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
reactive distillation
process simulator
isoamyl acetate
dynamic modeling
disturbance
Opis:
The cost-effectiveness of reactive distillation (RD) processes makes them highly attractive for industrial applications. However, their preliminary design and subsequent scale-up and operation are challenging. Specifically, the response of RD system during fluctuations in process parameters is of paramount importance to ensure the stability of the whole process. As a result of carrying out simulations using Aspen Plus, it is shown that the RD process for isoamyl acetate production was much more economical than conventional reactor distillation configuration under optimized process conditions due to lower utilities consumption, higher conversion and smaller sizes of condenser and reboiler. Rigorous dynamic modeling of RD system was performed to evaluate its sensitivity to disturbances in critical process parameters; the product flow was quite sensitive to disturbances. Even more sensitive was product composition when the disturbance in heat duties of condenser or reboiler led to a temperature decrease. However, positive disturbance in alcohol feed is of particular concern, which clearly made the system unstable.
Źródło:
Polish Journal of Chemical Technology; 2017, 19, 1; 59-66
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convex optimization of thrust allocation in a dynamic positioning simulation system
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/135112.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
dynamic positioning
thrust allocation
convex optimization
configurations
programming
simulator
Opis:
Vessels conducting dynamic positioning (DP) operations are usually equipped with thruster configurations that enable the generation of resultant force and moment in any direction. These configurations are deliberately redundant in order to reduce the consequences of thruster failures and increase the safety. On such vessels a thrust allocation system must be used to distribute the control actions determined by the DP controller among the thrusters. The optimal allocation of thrusters’ settings in DP systems is a problem that can be solved by several convex optimization methods depending on criteria and constraints used. The paper presents linear programming (LP) and quadratic programming (QP) methods adopted in the DP control model which is being developed at the Maritime University of Szczecin for ship simulation purposes.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 48 (120); 58-62
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on the gluing algorithm for multibody systems co-simulation
Autorzy:
Tomulik, P.
Frączek, J.
Powiązania:
https://bibliotekanauki.pl/articles/115845.pdf
Data publikacji:
2012
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
simulator coupling
co-simulation
waveform relaxation
dynamic iteration
multibody system dynamics
Opis:
This paper briefs a part of authors’ study on co-simulation techniques and their application to multibody system dynamics. The main concern of the study is on construction and properties of algorithms that are suitable for such purpose. One of the proposed methods from literature is so-called “gluing-algorithm” by Wang et al. These authors proposed Newton iteration to couple several simulators of mechanical subsystems through constraints/reactions, and provided numerical examples to suggest efficiency of the method. Here we re-investigate the method in order to underline some problems that one might meet when using the “gluingalgorithm”.
Źródło:
Challenges of Modern Technology; 2012, 3, 1; 19-32
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Constraints in allocation of thrusters in a DP simulator
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/135012.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
dynamic positioning
thrust allocation
convex optimization
constrained optimization
DP simulator
thrusters
Opis:
Vessels conducting dynamic positioning (DP) operations are usually equipped with thruster configurations that enable the generation of force and torque. Some thrusters in these configurations are deliberately redundant to minimize consequences of thruster failures, enable overactuated control and increase the safety in operation. On such vessels, a thrust allocation system must be used to distribute the control actions determined by the DP controller among the thrusters. The optimal allocation of the thrusters’ settings in DP systems is a problem that can be solved by convex optimization methods depending on the criteria and constraints used. This paper presents a quadratic programming (QP) method, adopted in a DP control model, which is being developed in Maritime University of Szczecin for ship simulation purposes.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 45-50
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Hot Deformation Parameters on the Size of Dynamically Recrystallized Austenite Grains of HSLA Steel
Autorzy:
Gnapowski, Sebastian
Opiela, Marek
Kalinowska-Ozgowicz, Elżbieta
Szulżyk-Cieplak, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/102621.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
HSLA steel
dynamic recrystallization
austenite grain
plastic strain
Gleeble simulator
stal HSLA
dynamiczna rekrystalizacja
ziarno austenitu
odkształcenie plastyczne
symulator Gleeble
Opis:
Materials scientists are seeking to produce metals with reduced weight and dimensions while maintaining the appropriate mechanical properties. There are several ways to improve the internal structure of metals, such as the ultrasound used to solidify liquid metal. The homogeneity of the grains and the uniformity of the metal structure affects its mechanical strength. This paper presents the results of investigations into the effects of hot deformation parameters in compression on the austenite grain size in the HSLA (High Strength Low Alloy) steel (0.16% C, 0.037% Nb, 0.004% Ti, 0.0098% N). The axisymmetric compression investigations were performed on cylindrical investigation specimens using a Gleeble 3800 thermomechanical simulator with the strain rate of 1÷15.9 s-1 and strain degree ε = 1.2. Before deformation, the research specimens were austenitized at TA = 1100÷1250 °C. The metallographic observations of the primary austenite grains were conducted with an optical microscope, while the structure of dynamically recrystallized austenite, inherited by martensite, was examined by using a scanning electron microscope.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 2; 76-84
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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