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ISSN Online: 2379-1748

8th Thermal and Fluids Engineering Conference (TFEC)
March, 26-29, 2023, College Park, MD, USA


Get access (open in a dialog) pages 325-338
DOI: 10.1615/TFEC2023.cmd.044953


Conventional shock tubes consist of driver and driven sections. The present work considers a different design − a shock tube with no driver section. This design replaces the driver gas with a high-pressure inlet gas that generates the shock wave. The wave travels the tube length until it hits the end wall, and a reflection wave occurs. This investigation examines the similarity of the present concept with a conventional shock tube. The tube initially contains argon gas at 30 kPa and 288 K. The tube walls are thermally insulated. The flow starts when argon at 300 kPa enters the tube and forms a normal shock wave. The formation of the shock wave accompanies a weak expansion wave. The computational model is transient, compressible, and turbulent flow. The computations reveal the presence of a moving normal shock wave that divides the flow field into the high and low-pressure regions. Further, a contact surface separates the high- and low-temperature areas behind the shock wave as in the conventional shock tube. The results indicate that the shock waves generated in the present tube are more robust than those in the traditional shock tubes for the same high-to-low pressure ratios. This work presents velocity, pressure, and temperature distributions along the tube and in the radial direction. The results differ from the one-dimensional inviscid flow due to the boundary layer influence near the wall. This work also examines the interaction of the contact surface with the boundary layer.