A Quasi-optimal Spectral Method for Turbulent Flows in Non-periodic Geometries

被引：0
|
作者：
Auteri, Franco [1 ]
机构：
[1] Politecn Milan, Dipartimento Ingn Aerospaziale, Milan, Italy
来源：
PROGRESS IN TURBULENCE V | 2014年 / 149卷
关键词：
D O I：
10.1007/978-3-319-01860-7_37
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this work, a quasi-optimal spectral solver for the incompressible Navier-Stokes equations is proposed which is able to treat nonperiodic geometries by construction. The method is based on a fractional-step time discretization recently proposed by Guermond andMinev. A Chebyshev-Galerkin spatial discretization is adopted to satisfy the LBB condition while maintaining an efficient treatment of the linear and nonlinear, dealiased, terms. A careful construction of the algorithm allows the computational complexity to grow as CN3 logN in 3D.
引用
收藏
页码：227 / 231
页数：5
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