Please use this identifier to cite or link to this item:
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/36827
Title: | Numerical simulation of the decay of grid-generated turbulence in a shock tube |
Authors: | Mohammad Ali, Jinnah jinnah@iut-dhaka.edu |
Keywords: | Shock wave Turbulence decay Navier-Stokes equations Turbulence model Turbulent region Turbulence grids |
Issue Date: | Jun-2014 |
Publisher: | The Institution of Engineers, Malaysia (IEM) |
Citation: | The Journal of the Institution of Engineers, Malaysia, vol. 75(1), 2014, pages 40-48 |
Abstract: | The decay of the grid-generated turbulence has been investigated numerically by solving the time-dependent threedimensional Navier-Stokes equations with k-e turbulence model for a compressible fluid. Turbulence grids are placed in the shock tube to generate shock induced turbulence in the wake of the grid plate. All turbulent fluctuations are computed along the longitudinal distance in the wake of the grid plate in the shock tube and it is observed that the decay of the turbulence and the decay of Turbulence Kinetic Energy (TKE) level are accelerated along the downstream direction and the percentage of decay depends on the strength of incident shock wave. Due to stronger compressibility effects on decaying turbulent field, all length scales are decreased along the downstream direction. The decay of dissipation rate of TKE is observed along the downstream direction for gradually decreasing the turbulence intensity in the wake of the grid plate. |
Description: | Link to publisher’s homepages at http://www.myiem.org.my/ |
URI: | http://dspace.unimap.edu.my:80/dspace/handle/123456789/36827 |
ISSN: | 0126-513X |
Appears in Collections: | IEM Journal |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Numerical simulation of the decay of grid-generated turbulence in a shock tube.pdf | 630.53 kB | Adobe PDF | View/Open |
Items in UniMAP Library Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.