Masaki IIDA, Kohei SHIMAMURA

DOI Number: N/A

Conference number: HiSST-2024-259

An expansion tube is a type of shock tube that can generate a high enthalpy flow simulating atmospheric entry. However, hypersonic flows have the problem that the diameter of the test flow becomes smaller due to significant boundary layer development. We designed a nozzle with a contour shape based on the hyperbolic equation to suppress the development of the boundary layer. We obtained the geometry of a hyperbolic nozzle using an optimization algorithm and evaluated its performance using CFD. As a result, we designed a hyperbolic nozzle with a smaller static pressure variance value of 0.00220 compared to 1.83 for the conical nozzle.

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In Categories: 1.Events, HiSST 2024, Testing & Evaluation
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