End-to-End Modelling of the HEG Shock Tunnel

Kurzfassung

We attempt an end-to-end computational model of the HEG shock tunnel as a way to extract more precise test ow conditions and as a way of getting predictions of new operating conditions. For a selection of established operating conditions, the L1d program was used to simulate the one-dimensional gas-dynamic processes within the whole of the facility. The program reproduces the compression tube performance reliably and, with the inclusion of the "loss factor" near the upstream-end of the compression tube, it does a good job of estimating the equilibrium pressure in the shock-re ection region over the set of six standard operating conditions for HEG.