TOWARD A HIGH-ORDER PRESERVING SLIDING-MESH APPROACH FOR COMPUTATIONAL AEROACOUSTICS IN SUBSONIC TURBOMACHINERY

被引：0

作者：

Foulquie, C. ^{[1
]}

Khelladi, S. ^{[1
]}

Ramirez, L. ^{[2
]}

Nogueira, X. ^{[2
]}

Deligant, M. ^{[1
]}

Mardjono, J. ^{[3
]}

Henner, M. ^{[4
]}

机构：

[1] Arts & Metiers PariTech, Lab Dynam Fluides, 151 Blvd Hop, F-75013 Paris, France

[2] Univ A Coruna, GMNI, La Coruna, Spain

[3] Safran Snecma, Acoust Dept, F-77550 Rond Point Rene Ravaud, Reau, France

[4] Valeo Engn Cooling, Fan Syst Simulat Dept, F-78320 La Verriere, France

来源：

11TH EUROPEAN CONFERENCE ON TURBOMACHINERY: FLUID DYNAMICS AND THERMODYNAMICS | 2015年

关键词：

DISCONTINUOUS GALERKIN; UNSTRUCTURED GRIDS; DIFFERENCE-SCHEMES; SOLVERS; EQUATIONS;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aeroacoustic analogy is the hybrid technique most used to predict acoustic noise of open rotor turbo-machines. However it is not appropriate to turbo-machines operating in confined spaces- where the diffractions, reflections and near-field flow effects can not be neglected. To overcome this issue, acoustic sources are propagated using linearized Euler equation and rotor motion is taken into account by using a sliding mesh method. This technique allows relative sliding of one grid adjacent to another grid. In addition, we propose a high-order finite volume solver (based on Moving Least Squares approximation MLS), which works on unstructured grid, in order to address most of the industrial applications and their complex geometries. In this paper, two families of MLS-based sliding mesh method are presented. A comparison between the accuracy of the different sliding mesh approaches is made by using a theoretical acoustic benchmark.

引用

页数：13