Analysis of Shock Deceleration Effects in the NASA Electric Arc Shock Tube

What is it about?

Shock tubes work by sending a fast shockwave though stationary gas in a tube. Typically, the shock speed varies along its length, but it is assumed that this does not influence the result. For over half a century, this mechanism has been proposed as a source of disagreement between results from the NASA Electric Arc Shock Tube and numerical predictions. This work simulates the test flow in the facility with consideration of this effect, showing that it is important.

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