Improvement of a Diaphragmless Driver Section for a Small Diameter Shock Tube

Recently, the micro-shock waves have attracted attention of researchers in several fields of science. It is well known that the shear stress and the heat transfer between a test gas and a wall lead to significant deviations from the normal theory of a shock wave propagating in a small diameter shock tube[1][2]. In our previous research, we developed a diaphragmless driver section using a rubber valve, and estimated the valve opening characteristics[3].