On the effect of inflow conditions in simulation of a turbulent round jet |
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Authors: | Ehsan Faghani Simin Dokht Saemi Reza Maddahian Bijan Farhanieh |
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Affiliation: | (1) Mechatronic Systems Engineering, Simon Fraser University, Burnaby, Canada;(2) National Iranian Oil Products Distribution Company, Tehran, Iran;(3) Mechanical Engineering, Sharif University of Technology, Tehran, Iran |
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Abstract: | 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-e{k-\varepsilon} 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. |
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