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Wyświetlanie 1-3 z 3
Tytuł:
Review of numerical models of cavitating flows with the use of the homogeneous approach
Autorzy:
Niedźwiedzka, A.
Schnerr, G. H.
Sobieski, W.
Powiązania:
https://bibliotekanauki.pl/articles/239953.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sheet cavitation
cloud cavitation
homogeneous models
steady-state
unsteady
hydrofoil
venturi
cylinder
model jednorodny
stan stabilny
stan ustalony
niestacjonarny
hydropłat
Opis:
The focus of research works on cavitation has changed since the 1960s; the behaviour of a single bubble is no more the area of interest for most scientists. Its place was taken by the cavitating flow considered as a whole. Many numerical models of cavitating flows came into being within the space of the last fifty years. They can be divided into two groups: multifluid and homogeneous (i.e., single-fluid) models. The group of homogenous models contains two subgroups: models based on transport equation and pressure based models. Several works tried to order particular approaches and presented short reviews of selected studies. However, these classifications are too rough to be treated as sufficiently accurate. The aim of this paper is to present the development paths of numerical investigations of cavitating flows with the use of homogeneous approach in order of publication year and with relatively detailed description. Each of the presented model is accompanied by examples of the application area. This review focuses not only on the list of the most significant existing models to predict sheet and cloud cavitation, but also on presenting their advantages and disadvantages. Moreover, it shows the reasons which inspired present authors to look for new ways of more accurate numerical predictions and dimensions of cavitation. The article includes also the division of source terms of presented models based on the transport equation with the use of standardized symbols.
Źródło:
Archives of Thermodynamics; 2016, 37, 2; 71-88
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Hopf bifurcation sets of a chemicalreactors by two-parameter continuation method
Autorzy:
Berezowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/185121.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical reactor
Hopf bifurcation
thank reactor
bifurcation diagram
steady state
stability
dynamics
reaktor chemiczny
Rozwidlenie Hopfa
diagram bifurkacji
stan stabilny
stabilność
dynamika
Opis:
A two-parameter continuation method was developed and shown in the form of an example, allowingdetermination of Hopf bifurcation sets in a chemical reactor model. Exemplary calculations weremade for the continuous stirred tank reactor model (CSTR). The set of HB points limiting the rangeof oscillation in the reactor was determined. The results were confirmed on the bifurcation diagramof steady states and on time charts. The method is universal and can be used for various models ofchemical reactors.
Źródło:
Chemical and Process Engineering; 2020, 41, 3; 221--227
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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