鱼雷技术
魚雷技術
어뢰기술
TORPEDO TECHNOLOGY
2013年
3期
165-170
,共6页
周景军%董春鹏%尹韶平%项庆睿
週景軍%董春鵬%尹韶平%項慶睿
주경군%동춘붕%윤소평%항경예
通气超空泡%多相流%数值仿真方法%均值平衡流模型%欧拉双流体模型
通氣超空泡%多相流%數值倣真方法%均值平衡流模型%歐拉雙流體模型
통기초공포%다상류%수치방진방법%균치평형류모형%구랍쌍류체모형
ventilated supercavitation%multiphase flow%numerical simulation method%homogeneous model%Euler two-fluid model
通气超空泡流动涉及多相流动、湍流、相变及可压缩等流体力学难点问题,流动机理非常复杂。其中多相流模型是通气超空泡数值仿真研究工作的重点,将严重影响通气超空泡数值仿真结果的精度。本文有针对性地对比了目前广泛采用的均质平衡流模型和欧拉双流体模型,结合作者所在课题组多年来在水洞试验和数值仿真方面的研究成果,从空泡形态和流体动力两方面分析了欧拉双流体模型在预测通气超空泡方面的优势。随着研究的进一步深入,通气超空泡数值仿真方法有望成为超空泡减阻技术的重要研究手段,可以为工程设计提供参考。
通氣超空泡流動涉及多相流動、湍流、相變及可壓縮等流體力學難點問題,流動機理非常複雜。其中多相流模型是通氣超空泡數值倣真研究工作的重點,將嚴重影響通氣超空泡數值倣真結果的精度。本文有針對性地對比瞭目前廣汎採用的均質平衡流模型和歐拉雙流體模型,結閤作者所在課題組多年來在水洞試驗和數值倣真方麵的研究成果,從空泡形態和流體動力兩方麵分析瞭歐拉雙流體模型在預測通氣超空泡方麵的優勢。隨著研究的進一步深入,通氣超空泡數值倣真方法有望成為超空泡減阻技術的重要研究手段,可以為工程設計提供參攷。
통기초공포류동섭급다상류동、단류、상변급가압축등류체역학난점문제,류동궤리비상복잡。기중다상류모형시통기초공포수치방진연구공작적중점,장엄중영향통기초공포수치방진결과적정도。본문유침대성지대비료목전엄범채용적균질평형류모형화구랍쌍류체모형,결합작자소재과제조다년래재수동시험화수치방진방면적연구성과,종공포형태화류체동력량방면분석료구랍쌍류체모형재예측통기초공포방면적우세。수착연구적진일보심입,통기초공포수치방진방법유망성위초공포감조기술적중요연구수단,가이위공정설계제공삼고。
Ventilated supercavitating flow involves such topics in fluid mechanics as multiphase flow, turbulence, phase change and compressibility, its mechanism is very complex. The multiphase flow model has attracted much more atten-tion in the study of numerical simulation of supercavitating flow, however its accuracy in simulation is not satisfactory. In this paper, the homogeneous model, which are widely used in the world, are compared with the Euler two-fluid model by combining with the authors′ research by means of water tunnel experiments and numerical simulation. The advan-tages of the Euler two-fluid model in predicting ventilated supercavitation is analyzed in terms of cavity shape and hy-drodynamics of a vehicle. Numerical simulation of ventilated supercavitation is expected to become an important ap-proach of drag-reduction technology through supercavitation.