日本航空宇宙学会論文集
Online ISSN : 2432-3691
Print ISSN : 1344-6460
ISSN-L : 1344-6460
論文
厳密な気泡周りの伝熱と気泡振動を考慮した気泡径分布モデルに基づく極低温高速キャビテーション流のための計算モデルとその検証
伊藤 優
著者情報
ジャーナル フリー

2008 年 56 巻 657 号 p. 456-463

詳細
抄録

A bubble size distribution model has been developed by the author for a cryogenic high-speed cavitating flow of a turbo-pump in a liquid fuel rocket engine. In this model, bubble growth/decay and bubble advection are solved for each class of the bubble size, strictly mass, when there are various mass bubbles in the same calculation region. The above calculations are treated as Eulerian approach with respect to the bubble mass. The numerical results based on this model have agreed with the experimental results as a whole, however, some inconsistency still remained. It is suspected that the model of the bubble growth/decay causes the difference between the numerical and experimental results because heat transfer around the bubble was approximately computed by an analytical solution of unsteady heat transfer based on the elapsed-time from the bubble nucleation. In this paper, a new bubble size distribution model was redeveloped, in which the bubble growth/decay calculations employ a new method combining two rigorous methods, namely, a Rayleigh-Plesset equation for bubble oscillation, and a heat conduction equation in a thermal boundary layer around the bubble to evaluate mass rate of evaporation/condensation.

著者関連情報
© 2008 The Japan Society for Aeronautical and Space Sciences
前の記事 次の記事
feedback
Top