Validation of DES for Capsule Aerodynamics using 05-CA Wind Tunnel Test Data

摘要

Comparisons between computational fluid dynamics simulations using detached-eddy simulation and wind tunnel test data from 05-CA are shown for the purpose of validation. 05-CA used a 7.66% scale model of the Crew Module for NASA's Multi-Purpose Crew Vehicle. Several freestream conditions across three Mach numbers and three angles of attack are considered. The test data include time-averaged integrated forces and moments, static pressure port measurements, and unsteady frequency response. Results of this work assess the applicability of detached-eddy simulation to supersonic, subsonic, and transonic flow over a bluff body using three numerical techniques. For supersonic and transonic flows, detached-eddy simulation agrees well with experiment. Subsonic flows still prove to be difficult for the methods utilized in this work.