Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

1 Zeszyty Naukowe Instytutu Maszyn Przepływowych Polskiej Akademii Nauk w Gdańsku

1 1999

1 Kwidzyński R.

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: macroscopic dissipation

Sortuj według:

Ogranicz wyniki do:

Macroscopic dissipation in a dispersed condensing shock wave

100%

Kwidzyński R.

tom nr 505/1464

47--61

In this paper the problem of modelling of dissipation in homogeneous two-phase medium is concerned. The introduction of a coefficient of macroscopic viscosity that incorporates viscosity due to shear stress and volume deformation has been put forward. In order to evaluate the macroscopic viscosity, the condition of equal production of entropy in real flow and in the continuum model has been applied. It turns out that the value of this coefficient is by a few orders of magnitude greater than the molecular viscosity for the liquid or vapour. Thermodynamic non-equilibrium between the phases has also an essential effect on the properties of two-phase flow. The above mentioned factors have been accounted for in the theoretical description of the phenomenon of shock condensation, resulting in the formulation of a relaxation model with macroscopic dissipation.