Three-Dimensional Passive and Active Control Methods of Shock Wave Train Physics in a Duct

International Journal of Applied Mechanics - Tập 08 Số 04 - Trang 1650047 - 2016
Reza Kamali1, Seyed Mahmood Mousavi1, Danial Khojasteh1
1School of Mechanical Engineering, Shiraz University, Shiraz, 71936-16548, Iran

Tóm tắt

In the present work, the physics of a three-dimensional shock train in a convergent-divergent nozzle is numerically investigated. In this regards, the Ansys-Fluent Software with Algebraic Wall-Modeled Large-Eddy Simulation (WMLES) is used. To estimate precision and errors accumulation we used the Smirinov’s method; fine flow structures are obtained via Laplacian of density called shadowgraph and the shock parameter is defined as multiplication of flow Mach number by the normalized pressure gradient, in which shock wave structures are visible distinctly. The results are compared with the experimental data of Weiss et al. [Experiments in Fluids 49(2) (2010) 355–365], in the same conditions including geometry, boundary conditions, etc. The results show that there is good agreement with experimental trends concerning wall pressure and centerline Mach number profiles. Therefore, the focus of the present study is an assessment of various flow control methods to change the shock structures. Consequently, we investigated the effects of passive (bump and cavity) and active (suction and blowing) control methods on the starting point of shock, shock strength, minimum pressure, maximum flow Mach number, etc. All CFD investigations are carried out by High Performance Computing Center (HPCC).

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Tài liệu tham khảo

10.1016/j.ijheatfluidflow.2014.10.003

10.2514/3.23243

10.1007/BF02485850

10.1007/978-90-481-2819-8

10.1016/j.actaastro.2015.07.022

10.1017/jfm.2012.37

10.1007/BF02487711

10.1016/j.actaastro.2010.12.011

10.1016/j.actaastro.2015.06.024

10.1142/S1758825115500192

10.2514/6.2006-816

10.1017/CBO9780511755507

10.1142/S1758825111001238

10.2514/1.J052348

10.1260/1756-8277.6.4.387

10.5541/ijot.530

10.1142/S012918311450003X

10.1016/j.actaastro.2014.09.002

10.1016/j.ijheatfluidflow.2014.05.006

10.1063/1.3407651

10.1017/CBO9780511627019

10.1016/j.ijhydene.2014.04.150

Sridhar T., 2013, International Journal on Theoretical and Applied Research in Mechanical Engineering, 2, 7

10.1007/s11431-011-4582-y

10.2514/1.J052079

10.2514/1.J052214

10.1142/S1758825115500581

10.1007/s00348-009-0764-9

10.1007/s00348-011-1211-2

10.1007/s00193-013-0456-5

10.1016/j.enconman.2014.09.023

10.1016/j.ijrefrig.2013.11.008

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International Journal of Applied Mechanics

Tập 08 Số 04

1650047

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