Thermally driven acoustic oscillations, part V: Gas-liquid oscillations |
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Authors: | Gerassimos Zouzoulas and Nikolaus Rott |
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Institution: | (1) IDR/UPM, E.T.S.I. Aeronáuticos, Universidad Politécnica de Madrid, 28040 Madrid, Spain |
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Abstract: | Thermally driven gas oscillations are considered which drive a liquid column at the cold open end. The frequency of the oscillations is lowered by the inertia of the liquid and the Stokes boundary layer is thick. Optimal conditions for thermal driving in the gas occur at correspondingly big tube radii. Experiments conducted inN
2 confirm the theoretically calculated stability limits. With hot air driving a water column, a low critical temperature ratio for the oscillations of about 1.5 was observed. |
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Keywords: | |
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