Abstract
Reverse flow in a parallel walled test channel placed in a wider channel is observed when an obstruction is placed at the test channel entry. When the position of the obstruction at the test channel entry is varied relative to the test channel, the flow inside the test channel reverses (opposite to the wider channel flow), stagnates or flows in the forward direction. The present study is to establish this unsteady flow, involving reverse flow in the converging channels for various g/w ratios at Re = 4000. The converging angles studied are 0.2°, 0.4°, 0.6°, 0.8° and 1.0°. The reverse flow magnitude increases as the convergence angle is increased till 0.6°, and then starts decreases when the convergence angle is further increased. The results also show us more insight about the reverse flow phenomenon and mechanism of fluid pumping due to shear layer interaction at channel exit for the various convergence angles.
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References
Gowda, B.H.L., Tulapurkara, E.G.: Reverse flow in a channel with an obstruction at the entry. J. Fluid Mech. 204, 229–244 (1989)
Gowda, B.H.L., Tulapurkara, E.G., Swain, S.K.: Reverse flow in a channel-influence of obstruction geometry. Exp. Fluids 16, 137–145 (1993)
Tulapurkara, E.G., Gowda, B.H.L., Swain, S.K.: Reverse flow in channel-effect of front and rear obstructions. Phys. Fluids 6, 3847–3853 (1994)
Gowda, B.H.L., Tulapurkara, E.G., Swain, S.K.: Influence of splitter plates on the reverse flow in a channel. Fluid Dyn. Res. 21, 319–330 (1997)
Gowda, B.H.L., Tulapurkara, E.G., Swain, S.K.: On the mechanism of reverse flow in a channel with an obstruction at the entry. Fluid Dyn. Res. 23, 177–178 (1998)
Kabir, M.A., Khan, M.M.K., Bhuiyan, M.A.: A study of the flow phenomenon of water in a channel with flat plate obstruction geometry at the entry. KSME Int. J. 17, 879–887 (2003)
Kabir, M.A., Khan, M.M.K., Bhuiyan, M.A.: Flow phenomena in a channel with different shaped obstructions at the entrance. Fluid Dyn. Res. 35, 391–408 (2004)
Senthil Kumar, K., Tulapurkara, E.G., Biswas, G., Gowda, B.H.L.: Reverse flow in channel with obstruction at entry. Fluid Dyn. Res. 37, 387–398 (2005)
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Mathiyalagan, S.P., Gowda, B.H.L. (2017). Reverse Flow in Converging Channels with Obstruction at the Entry. In: Saha, A., Das, D., Srivastava, R., Panigrahi, P., Muralidhar, K. (eds) Fluid Mechanics and Fluid Power – Contemporary Research. Lecture Notes in Mechanical Engineering. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2743-4_28
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DOI: https://doi.org/10.1007/978-81-322-2743-4_28
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