Abstract:
Model for description of essentually subsonic flows of real one component gas with twoparametric
equation of state is presented. In the model changing of density and pressure
under gravitation are taking into account. In case of complex nonlinear equation of state the
stratification can be considered in linear approximation.
With the presented model heat and mass transport in a side-heated isolated square cavity are
calculated. There is a near-critical van der Waals gas in the cavity. Comparison with results
by other athors shows that the presented model correctly "filters' process of propagation of
acoustic perturbations and dosen't lose accuracy of other processes description.