二相流數值模式應用於超空蝕魚雷之初步研究

Preliminary Study of the Two-Phase Numerical Model Applying on a Supercavitation Torpedo

歐陽寬(Kwan Ouyang) ； 劉宗龍(Tsung-Lung Liu) ； 陳明華(Ming-Hua Chen) ； 劉祖彰(Tsu-Chang Liu) ； 吳聖儒(Sheng-Ju Wu)

《台北海洋技術學院學報》 6卷1期 (2013/03) Pp. 1-17

摘要

超空泡減阻技術為一種可實現水下潛體高速航行的新理論與新途徑；其減阻的原理，係利用超空泡完整包覆水下航行體，使流體與航行體表面分離，進而大幅降低水下潛體的黏性阻力。本文利用商業CFD軟體FLUENT 6.2內建之多相流模型，以及Singhal空蝕模型求解均質超空泡流場RANS方程式，針對平頭超空泡激化器進行穩態軸對稱性自然超空蝕現象數值模擬。結果顯示FLUENT提供之多相流模型及空蝕模型確能模擬出超空泡完整包覆彈體現象，且當空泡產生包圍彈體時，彈體的表面摩擦力大幅降低。

關鍵字

空蝕 ； 二相流模型 ； 數值模擬

並列摘要

The drag reduction for supercavitation is a new theory and approach that can conduct high-speed navigation of underwater vehicles. This mechanism of drag reduction is to generate a supercavity that can envelop the underwater vehicles, which would result in isolating the submerged body from water to avoid considerable frictional drag. In this research, the software of computational fluid dynamics, Fluent 6.2, was used to simulate this study that is the steady, axis-symmetry natural supercavitation generated by cavitators with the types of trapezoid. Results show that the two-phase numerical model provided FLUENT can simulate supercavities well. As supercavities envelop the underwater vehicles, the frictional drags can be reduced.

並列關鍵字

cavity ； two-phase model ； numerical simulation

參考文獻

王献孚(2009)。空蝕泡和超空蝕泡流動理論及應用。北京:國防工業出版社。

錢東、高軍保(2002)。國外超空泡武器技術。魚雷技術。10(1)，3-7。

Vlasenko, Y. D.(2003).Experimental Investigation of Supercavitation Flow Regimes At Subsonic And Transonic Speeds.5th International Symposium on Cavitation.(5th International Symposium on Cavitation).:

Stinebring, D. R.,Billet, M. L.,Lindau, J. W.,Kunz, R. F.(2001).Developed Cavitation-Cavity Dynamics.,::Applied Research Laboratory State College.

Kuklinski, R.,,Henoch, C.,Castano, J.(2001).Experimental Study of Ventilated Cavities on Dynamic Test Model.CAV 2001: Fourth International Symposium on Cavitation.(CAV 2001: Fourth International Symposium on Cavitation).