Inflow boundary condition for DNS of turbulent boundary layers on supersonic blunt cones

摘要

For direct numerical simulation(DNS)of turbulent boundary layers,generation of an appropriate inflow condition needs to be considered.This paper proposes a method,with which the inflow condition for spatial-mode DNS of turbulent boundary layers on supersonic blunt cones with different Mach numbers,Reynolds numbers and wall temperature conditions can be generated.This is based only on a given instant flow field obtained by a temporal-mode DNS of a turbulent boundary layer on a flat plate. Effectiveness of the method is shown in three typical examples by comparing the results with those obtained by other methods.