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Near continuum flows over a sphere
Cai CP; Sun QH(孙泉华); Cai, CP (reprint author), New Mexico State Univ, Dept Mech & Aerosp Engn, Jett Hall 110,MSC 3450, Las Cruces, NM 88003 USA.
Source PublicationCOMPUTERS & FLUIDS
2015-04-16
Volume111Pages:62-68
ISSN0045-7930
AbstractIn this paper, the problem of near continuum gas flows over a sphere is investigated numerically. Three types of boundary conditions for the sphere surface are adopted: (1) non-slip and constant temperature surface; (2) velocity slip with considerations of velocity gradient, and temperature jump at the surface; and (3) velocity slip with considerations of both velocity and temperature gradients, as well as temperature jump at the surface. Navier-Stokes equations in a cylindrical coordinate system for compressible flows are adopted with the Roe numerical scheme. The numerical simulation results include coefficient distributions for surface pressure, friction, heat flux, velocity slip, temperature jump and total drag. The results are obtained with different free stream Knudsen and Mach numbers. Several conclusions include: (i) the third surface boundary condition does not create significant differences from the second type, (ii) however, an adoption of non-slip or a slip surface boundary condition can create significant differences in Cf Cq and CD. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordFlow Computation Navier-stokes Equations Slip Flows
Subject AreaComputer Science, Interdisciplinary Applications ; Mechanics
DOI10.1016/j.compfluid.2015.01.004
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000352051000005
WOS Research AreaComputer Science ; Mechanics
WOS SubjectComputer Science, Interdisciplinary Applications ; Mechanics
DepartmentLHD微尺度和非平衡流动
Classification二类/Q2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49913
Collection高温气体动力学国家重点实验室
Corresponding AuthorCai, CP (reprint author), New Mexico State Univ, Dept Mech & Aerosp Engn, Jett Hall 110,MSC 3450, Las Cruces, NM 88003 USA.
Recommended Citation
GB/T 7714
Cai CP,Sun QH,Cai, CP . Near continuum flows over a sphere[J]. COMPUTERS & FLUIDS,2015,111:62-68.
APA Cai CP,孙泉华,&Cai, CP .(2015).Near continuum flows over a sphere.COMPUTERS & FLUIDS,111,62-68.
MLA Cai CP,et al."Near continuum flows over a sphere".COMPUTERS & FLUIDS 111(2015):62-68.
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