Linear Unsteady CFD Analysis of the Cascade-Gust Interaction Problem

A linearised unsteady Navier-Stokes code, HYDLIN, is used to provide the results for the cascade-gust interaction test problem. The HYDLIN approach is based on linearistion of the unsteady flow about the cascade mean flow generated by the steady non-linear flow solution from the HYDRA CFD code. The test problem solutions for the workshop have been run using a multiblock quadrilateral mesh of around 48K nodes, using boundary conditions as defined in the test problem specification. The physical aspects of the cascade-gust interaction and the waves generated by the interaction are studied using the linear unsteady CFD results.