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Derivation of Thermal Relaxation Time between Two-Phase Flow under the Effect of Heating Sink |
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PP: 1299-1305 |
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Author(s) |
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S. A. Mohammadein,
M. I. Elgammal,
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Abstract |
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| In the present paper, the thermal relaxation time of a mixture surrounding a growing vapour bubbles between two-phase
temperatures under the effect of heating sink is investigated. The mathematical model obtained by Mohammadein [6] is extended and
solved analytically by using similarity parameters method; which used by Mohammadein [5] between two finite boundaries. Under
the initial and final boundaries of growing vapour bubbles, thermal relaxation time is derived in terms of void fraction and affected by
initial superheating and thermal diffusivity. Thermal relaxation time under the effect of heating sink performs a lower values than the
previous pressure and thermal relaxation times obtained by authors [4,5]. Thermal relaxation time performs a good agreement with
Moby Dick experiment [2]. |
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