One-Step Direct Aeroacoustic Simulation Using Space-Time Conservation Element and Solution Element Method

	One-Step Direct Aeroacoustic Simulation Using Space-Time Conservation Element and Solution Element Method
	Ho CY; Leung RCK; Zhou K; Lam GCY; Jiang ZL(姜宗林)
会议录名称	RECENT PROGRESSES IN FLUID DYNAMICS RESEARCH - PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON FLUID MECHANICS 丛书: AIP Conference Proceedings
	2011
页码	218-220
会议名称	6th International Conference on Fluid Mechanics
会议日期	JUN 30-JUL 03, 2011
会议地点	Guangzhou, PEOPLES R CHINA
摘要	One-step direct aeroacoustic simulation (DAS) has received attention from aerospace and mechanical high-pressure fluid-moving system manufacturers for quite some time. They aim to simulate the unsteady flow and acoustic field in the duct simultaneously in order to investigate the aeroacoustic generation mechanisms. Because of the large length and energy scale disparities between the acoustic far field and the aerodynamic near field, highly accurate and high-resolution simulation scheme is required. This involves the use of high order compact finite difference and time advancement schemes in simulation. However, in this situation, large buffer zones are always needed to suppress the spurious numerical waves emanating from computational boundaries. This further increases the computational resources to yield accurate results. On the other hand, for such problem as supersonic jet noise, the numerical scheme should be able to resolve both strong shock waves and weak acoustic waves simultaneously. Usually numerical aeroacoustic scheme that is good for low Mach number flow is not able to give satisfactory simulation results for shock wave. Therefore, the aeroacoustic research community has been looking for a more efficient one-step DAS scheme that has the comparable accuracy to the finite-difference approach with smaller buffer regions, yet is able to give accurate solutions from subsonic to supersonic flows. The conservation element and solution element (CE/SE) scheme is one of the possible schemes satisfying the above requirements. This paper aims to report the development of a CE/SE scheme for one-step DAS and illustrate its robustness and effectiveness with two selected benchmark problems.
关键词	Aeroacoustics Caa Ce/se Method Acoustic Wave Supersonic Jet
课题组名称	LHD激波与爆轰物理
ISBN号	978-0-7354-0936-1
收录类别	CPCI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47718
专题	高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Ho CY,Leung RCK,Zhou K,et al. One-Step Direct Aeroacoustic Simulation Using Space-Time Conservation Element and Solution Element Method[C]RECENT PROGRESSES IN FLUID DYNAMICS RESEARCH - PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON FLUID MECHANICS 丛书: AIP Conference Proceedings,2011:218-220.

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