Numerical Simulation of Thermobuoyant Flow with Large Temperature Variation

摘要: The use of the classical Boussinesq approximation is a straightforward strategy for taking into account buoyancy effect in incompressible solvers. This highly effective if density variation low. However, ignoring importance thermobuoyant flow fields can cause considerable deviation from correct prediction fluid behavior and accurate estimation heat transfer rate. In this study, an algorithm suitably extended to solve high-density-variation caused by strong natural-convection influence. key point research way that ordinary non-Boussinesq-regime applications. extension results unified capable solving either pure incorporated with or entirely compressible where field affected both temperature pressure fields. then verified benchmark convecting cavity problem at Rayleigh 10 6 range e = 0.01-0.6. show method vigorously extreme variation.