MODELING OF GAS FLOW PROCESSES IN AREAS WITH PERFORATED PARTITIONS
Keywords:
gas dynamics, perforated baffle, Laval nozzle, Mach number, discontinuity surface, two-layer flow, Borda impact, isentropic processAbstract
This paper examines the numerical and analytical modeling of ideal gas flow in channels and nozzles equipped with perforated baffles. The authors propose a method for dividing the domain into external and internal flows, where the interaction between the layers is described through special boundary conditions on the discontinuity surface. Within a quasi-homogeneous two-layer formulation, a system of differential equations is derived that accounts for gas flow through the perforations and the change in the entropy function. Particular attention is paid to the analysis of the characteristic flow properties near the "convergence" point of the conical baffle. The study relies on classical isentropic gas compression and separated outflow (Bord shock) models, enabling the effective modeling of flow stabilization and vibration damping processes in aerodynamic structures.
References
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