Computational Studies of Turbulent Flows in Rotating Radial and 200 Backward Swept Diverging Channels

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Computational study is carried out in radial and 200 backward swept diverging channels rotating about the axial direction. Centrifugal and Coriolis forces, which are developed due to the rotation, affect the secondary flows and flow pattern inside the channel. Reynolds number of Re=36000 with Rotation numbers ranging from 0.0 and 1.5 are chosen for investigation. The variation of velocity and turbulence kinetic energy is studied at several locations of the curved channels. Positive Richardson numbers on the suction side indicates stabilizations of the flow. The stabilization effect increases with increasing Rotation numbers at both the channels.

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540-545

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August 2014

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[1] Moore, J., (1973), A Wake and an Eddy in a Rotating, Radial-Flow passage, Journal of Engineering for Power, Vol. 95, pp.422-430.

Google Scholar

[2] Sante, A.D., and Braembussche, R.V., (2010), Experimental Study of the Effect of Spanwise Rotation on the Flow in a Low Aspect ratio diffuser for Turbomachinary applications, Exp Fluids, Vol. 49, pp.585-598.

DOI: 10.1007/s00348-010-0829-9

Google Scholar

[3] Tsukahara, T., Tillmark, N., and Alfredsson, P.H., (2010, Flow regimes in a plane Couette flow with system rotation, Journal of Fluid Mechanics, Vol. 648, pp.5-33.

DOI: 10.1017/s0022112009993880

Google Scholar

[4] Di Liberto, Massimiliano and Ciofalo, Michele, (2013), A study of turbulent heat transfer in curved pipes by numerical simulation, International Journal of Heat and Mass Transfer, Vol. 59, pp.112-125.

DOI: 10.1016/j.ijheatmasstransfer.2012.12.011

Google Scholar

[5] Mondal, R. N., Islam, M. R., Uddin, M. S., and Datta, A. K., (2010), Flow through a Rotating Curved Square Duct: The Case of Positive Rotation, Journal of physical sciences, Vol. 14. pp.145-163.

Google Scholar

[6] Dutta, S., Andrews, M.J., and Han, J.C., (1996), Prediction of Turbulent Heat transfer in a Rotating Smooth Square Ducts, International Journal of Heat and Mass Transfer, Vol. 39, pp.2505-2514.

DOI: 10.1016/0017-9310(95)00319-3

Google Scholar

[7] Kirillov, A.I., Ris, V.V., Smirnov, E.M., and Zaitsev, D.K., (2001), Numerical Simulation of Local Heat Transfer in Rotating Two- Pass Square Channels, New York Academy of Sciences, Vol. 934, pp.456-463.

DOI: 10.1111/j.1749-6632.2001.tb05883.x

Google Scholar

[8] Kang, S., and Hirsch, C., (2001), Numerical Simulation and Theoretical Analysis of the 3D Viscous flow in Centrifugal impellers, Task Quarterly, Vol. 4, pp.433-458.

Google Scholar