Three-dimensional Unsteady Transonic Flow Calculations using TSP Formulation Incorporating Entropy and Vorticity Effects

摘要

Modifications to unsteady transonic small perturbations (TSP) theory to include entropy and vorticity effects are presented in thispaper. The modifications have been implemented in the TSPcode. Entropy and vorticity effects ha ve been incorporated within the solution procedure to analyze flows with strong shock waves more accurately. The modified code includes these effects while retaining the relative simplicity and cost-efficiency of the TSP formulation. This paper presents detailed descriptions of the entropy and vorticity modifications along with calculated results and comparisons that assess the modified theory. The results are in good agreement with parallel Euler calculations and with experimental data. Therefore, the present method now provides the aeroelastician with an affordable capability to analyze relatively difficult trnnsonic flows without having to solve the computationally more expensive Euler equations.