3-D Numerical and Experimental Study of the Turbulent Mixing Layer between Two Non-Parallel Streams*

S. Mushatet, Khudheyer; K. Murtadha, Talib; M. Jalil, Jalal

	3-D Numerical and Experimental Study of the Turbulent Mixing Layer between Two Non-Parallel Streams*
Journal of Engineering and Sustainable Development
Article 1, Volume 11, Issue 2, 2007, Pages 134-144
Authors
Khudheyer S. Mushatet; Talib K. Murtadha; Jalal M. Jalil
Abstract
Results of numerical and experimental study on the turbulent mixing layer of three-dimensional non-parallel streams are reported. The numerical prediction was based on k- model. Fully elliptic Navier Stokes and energy equations are solved using finite difference primitive variables method. The study has been carried out at Reynolds numbers, Re = 19200, 28000, 48000, and three velocity ratios U1/U2 of 0.3, 0.5, and 1.0. The flow studied. The mean velocity and temperature profiles are studied up to 42 orifice width down stream from the of the high speed side is heated and the flow of the low speed side is kept at room temperature. Two interception angles of (12.5o, 25o) were orifice. The results show that there was significant effect of the angle and the mixing ratio on the characteristics of the flow field. The two jets are merged upstream of their geometric interception. The centerline of the combined jet is tilted from the midline between the two orifices when the two jets have different velocities at the large interception angle. Also the results indicated that the mixing layer penetrated deeper into the low speed side than into the high speed of the flow. The numerical results are compared with the experimental results and found to be in moderate agreement.

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