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On the effect of inflow conditions in simulation of a turbulent round jet

Faghani, E ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s00419-010-0494-8
  3. Abstract:
  4. This paper investigates the impact of the inflow conditions on simulations of a round jet discharging from a wall into a large space. The fluid dynamic characteristics of a round jet are studied numerically. A numerical method based on the control volume approach with collocated grid arrangement is employed. The k-ε model is utilized to approximate turbulent stresses by considering six different inlet conditions. The velocity field is presented, and the rate of decay at the jet centerline is determined. The results showed that inflow conditions had a strong influence on the jet characteristics. This paper also investigates both sharp-edged and contoured nozzles. The effects of velocity, turbulence intensity, turbulence kinetic energy, and turbulence dissipation rate on flow field characteristics are examined. Results showed that the present simulations in both types of nozzles are in good agreement with experiments when considering the appropriate inflow conditions
  5. Keywords:
  6. Free jet ; k-ε model ; Turbulent flow ; Centerlines ; Collocated grids ; Control volumes ; Dynamic characteristics ; Free jets ; Inflow conditions ; Inlet conditions ; Large spaces ; On flow ; Round jets ; Turbulence dissipation rate ; Turbulence intensity ; Turbulence kinetic energy ; Turbulent round jet ; Turbulent stress ; Velocity field ; Nozzles ; Numerical methods ; Velocity ; Turbulence
  7. Source: Archive of Applied Mechanics ; Volume 81, Issue 10 , 2011 , Pages 1439-1453 ; 09391533 (ISSN)
  8. URL: http://link.springer.com/article/10.1007%2Fs00419-010-0494-8