Augmented proper orthogonal decomposition for problems with moving discontinuities

被引：11
|
作者：
Brenner, Thomas A. [1 ]
Fontenot, Raymond L. [1 ]
Cizmas, Paul G. A. [1 ]
O'Brien, Thomas J. [2 ]
Breault, Ronald W. [2 ]
机构：
[1] Texas A&M Univ, Dept Aerosp Engn, College Stn, TX 77843 USA
[2] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA
来源：
POWDER TECHNOLOGY | 2010年 / 203卷 / 01期
关键词：
Proper orthogonal decomposition; Reduced-order model; Multiphase flow; Morphology; REDUCED-ORDER MODELS;
D O I：
10.1016/j.powtec.2010.03.032
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A method is proposed to augment the proper orthogonal decomposition basis functions with discontinuity modes to better capture moving discontinuities in reduced-order models. Moving discontinuities can be shocks in unsteady gas flows or bubbles in multiphase flow. The method is shown to work for a simple test problem using the first-order wave equation. A method for detecting discontinuities numerically is developed using mathematical morphology. This method is shown to properly identify the edges of bubbles in multiphase flow. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：78 / 85
页数：8
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