A proper orthogonal decomposition method for nonlinear flows with deforming meshes

被引：18
|
作者：
Freno, Brian A. [1 ]
Cizmas, Paul G. A. [1 ]
机构：
[1] Texas A&M Univ, Dept Aerosp Engn, College Stn, TX 77843 USA
来源：
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 2014年 / 50卷
关键词：
Proper orthogonal decomposition; Reduced-order modeling; Computational fluid dynamics; Deforming mesh; REDUCED-ORDER MODELS; COMPRESSIBLE FLOWS; POD; ALGORITHM;
D O I：
10.1016/j.ijheatfluidflow.2014.07.001
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents a proper orthogonal decomposition (POD) method that uses dynamic basis functions. The dynamic functions are of a prescribed form and do not explicitly depend on time but rather on parameters associated with flow unsteadiness. This POD method has been developed for modeling nonlinear flows with deforming meshes but can also be applied to fixed meshes. The method is illustrated for subsonic and transonic flows in channels with fixed and deforming meshes. This method properly captured flow nonlinearities and shock motion for cases in which the classical POD method failed. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：145 / 159
页数：15
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