可調式算則在空蝕現象的模擬

機構典藏 > College of Engineering > Graduate Institute & Department of Aerospace Engineering > Proceeding > Item 987654321/97179

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Title:	可調式算則在空蝕現象的模擬
Authors:	牛仰堯
Contributors:	淡江大學航空太空工程學系
Keywords:	Two-phase flow;Cavitation;Preconditioning
Date:	2013-11-05
Issue Date:	2014-03-18
Publisher:	新竹市：清華大學
Abstract:	The purpose is to develop an unsteady compressible multiphase flow cavitation numerical model. As we know, capturing different fluid interface and simulating phase change process are still a great challenge in the calculation analysis of multiphase flow. This paper use mixing conservation equations of multiphase compressible Navier-Stokes as governing equations. we adopt preconditioned method to simulate phase change process. Numerical methods are taken Precondition method by Weiss and smith et al developed. And we adopt Roe’s flux splitting method to deal with flux discretization in space. A dual-time implicit formulation with 4-order Runge-Kutta method is employed to accommodate the inherently unsteady physics. The program will enable the numerical stability and computation time obtained a better balance. In this thesis, examples of verifications are 1-d nozzle of the flow path and 2-d blunt body cavitation analysis and the results compared with the experimental data can obtain satisfactory for verification.
Relation:	第一屆兩岸流體力學研討會會議手冊
Appears in Collections:	[Graduate Institute & Department of Aerospace Engineering] Proceeding

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