Computational simulations of the AIR-1 test condition in the University of Illinois’ Hypervelocity Expansion Tube were conducted to verify facility operation and to obtain free stream properties that are otherwise difficult to measure. Two types of simulation were undertaken. The first was a one-dimensional simulation of the entire facility and the second was a hybrid simulation, combining a on...

A dynamic calibration technique for evaluating the thermal product values of different scratched temperature sensors is presented. These sensors have renewable junction, fast response time and it can be used for transient heat transfer measurements in hypersonic vehicles. Two types of scratch were used, mainly abrasive papers with different grit sizes and scalpel blades with different thickness...

SUMMARY A review is presented of previous theoretical work for the prediction of shock-tube running tunes. A new analysis is then introduced which attempts to avoid most of the restrictive assumptions of the previous analyses which are shown to lead to large errors particularly at low shook Mach numbers. The new analysis and the previous analyses are ccxnpared with one another and with the exis...

EFFECT OF ENDPLATE ON THE BLAST WAVE PROFILE IN A COMPRESSED GAS SHOCK TUBE

In this study, a compressible multi-component Navier-Stokes flow solver with real gas effect is developed for studying the high-speed flow in an air-He shock tube. For compressible multi-component flow simulation, a reduced five-equation model in conjunction with HLLC approximate Riemann solver is employed. For the real gas effect, a curve-fitting approximation for equilibrium air constructed f...