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Title: On the numerical technique for the simulation of hypervelocity test flows
Author: Hu ZM(胡宗民); Wang C(王春); Jiang ZL(姜宗林); Khoo BC
Source: Computers & Fluids
Issued Date: 2015-01-05
Volume: 106, Pages:12-18
Abstract: A shock-expansion tube (SET) is one of the major ground test facilities to generate really high-enthalpy and hypervelocity test flows. However, the strong shock wave may give rise to chemically non-equilibrium characteristic flow feature in a SET. In addition, the test time duration of a SET is extremely short which leads to difficulties in measurements and flow diagnostics. It is therefore appropriate to consider employing CFD approach, coupled with available experimental data, to determine the characteristic of the test flow in a SET. The dispersion-controlled dissipative scheme (DCD) is used for our simulation of chemically non-equilibrium flows associated with a SET. In this paper, the several numerical issues which occur in the computational investigation of the test flow in our SET facility are discussed. A new flux splitting algorithm based on local characteristics is worked out for the DCD scheme to mitigate any spurious oscillations. With the mentioned updated DCD scheme, the computed results compare well with the experimental data provided for validation. (C) 2014 Elsevier Ltd. All rights reserved.
Keyword: Hypervelocity test flow ; DCD scheme ; Flux-splitting ; Spurious oscillation
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: 胡宗民
Correspondent Email: huzm@imech.ac.cn; mpekbc@nus.edu.sg
DOI: 10.1016/j.compfluid.2014.09.039
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Computer Science, Interdisciplinary Applications ; Mechanics
WOS Subject Extended: Computer Science ; Mechanics
WOS Keyword Plus: SHOCK-CAPTURING SCHEMES ; EXPANSION TUBE ; OSCILLATIONS ; EVOLUTION
WOS ID: WOS:000346213200002
ISSN: 0045-7930
Subject: 流体力学
Department: LHD激波与爆轰物理
Classification: 二类/Q2
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/49306
Appears in Collections:高温气体动力学国家重点实验室_期刊论文

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