Dynamic modeling and numerical simulation of acoustic-thermal-fluid coupling for hypersonic vehicle fatigue test

A control-oriented dynamic model for acoustic-thermal- fluid coupling problem in thermal- acoustic fatigue testing facility was presented in this paper. By this control-oriented model, transient dynamic process of multi-physics coupling problem in a progressive wave tube could be approximately studied. The proposed model is verified by comparing to computational results using acoustic and fluid computational tools. We found that the proposed modeling method is much faster than classical acoustic and fluid computational methods. The modeling result agrees largely well with the computational results. The potential reasons of the modeling errors are discussed in this paper. Then, the model should be useful in fatigue testing preparation and evaluations.