入射衝撃波後方の低温壁面上で発生する代替フロンの非平衡凝縮 : 凝縮液膜の成長に影響を与える実験的パラメータ

概要

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The purpose of this work is to clarify nonequilibrium condensation of alternative Freon on the cold wall behind the incident shock wave. Experiments have been carried out with a diaphragmless and low temperature shock tube to measure the growth of condensed liquid film. The time dependent thickness of condensing liquid film is measured by an optical interferometric method based on multiple reflections of a He-Ne laser beam. By simultaneous measurements at two different locations, it is experimentally confirmed that the liquid film grows uniformly on the same temperature cold wall. It is also found that growth of the liquid film thickness depends on the nonequilibrium degree of pressure (p^*_2=p_2/p_<sat>) that includes informations of P_1 and Mi, under the same temperature conditions. From these results, we can clarify the tendency of liquid film growth on the value of nonequilibrium degree of pressure.
社団法人日本機械学会の論文
1999-01-25