Abstract
Typical thermal effects produced by the Hartmann-Sprenger (HS) tube are rapid heating of the gas near the closed end of the tube and large amplitude periodical fluctuation of the gas temperature in steady state. In the higher modes of the oscillation in the HS tube having a sudden area contraction (stepped tube), experimental results on the wall temperature distributions along the tube axis suggest amplification of the heating effect and trapping hot gas into the downstream cavity of the step. The calculated results of flow configurations in two-dimensional model of the stepped HS tube by FLIC method support the experimental results.
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