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	Time domain spectral methods for unsteady flow computations
	Su Xinrong ; Yuan Xin
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ aeroacoustics computational fluid dynamics convergence of numerical methods flow instability nozzles/ time domain spectral methods spectral method computational efficiency periodic unsteady flow computations implicit time marching method convergence acceleration nonreflecting boundary condition stability aeroacoustics benchmark problem 2D inviscid nozzle flow spectral method accuracy spectral method efficiency multistage turbomachinery problems/ A4710 General fluid dynamics theory, simulation and other computational methods A4720 Hydrodynamic stability and instability A4725M Noise (turbulence generated) A4740 Compressible flows shock and detonation phenomena A4755E Nozzles A0260 Numerical approximation and analysis C7320 Physics and chemistry computing C4190 Other numerical methods
中文摘要	The computational efficiency of spectral methods was evaluated for periodic unsteady flow computations with an implicit time marching method to accelerate the convergence. Also, the stability of non-reflecting boundary conditions for the spectral method for periodic unsteady flows was analyzed. An aeroacoustics benchmark problem and two-dimensional inviscid nozzle flow were simulated to validate the spectral method. The results demonstrate that the both accuracy and efficiency of the spectral method are better than the dual time step method for periodic unsteady computations. Thus, the spectral method can be used for many multistage turbomachinery problems.
语种	中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79893]
专题	清华大学
推荐引用方式 GB/T 7714	Su Xinrong,Yuan Xin. Time domain spectral methods for unsteady flow computations[J],2010, 2010.
APA	Su Xinrong,&Yuan Xin.(2010).Time domain spectral methods for unsteady flow computations..
MLA	Su Xinrong,et al."Time domain spectral methods for unsteady flow computations".(2010).

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