Time series evaluation of 2-D air and hydrogen supersonic mixing layer by using catalytic reaction
Gaseous hydrogen was injected parallel to supersonic freestream from a slit injector, which was located at the base of backward facing step. The time series evaluation of mixing condition was conducted at x=14,49 and 84 mm in the streamwise direction by using catalytic reaction on platinum wire. It was carried out by using W-type probe, which has both catalytic reaction probe (platinum wire probe) and reference probe (nickel wire probe). The measurements were conducted by measuring supplied electric powers into each probe from each electric circuit, simultaneously. The result showed that it was possible to measure the time series behavior of hydrogen and air supersonic mixing layer condition and coherent motion of turbulence by using the present method.
KeywordsPlatinum Wire Thin Wire Coherent Motion Time Jitter Time Series Measurement
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