Investigating the Effect of Isothermal Channel Height on the Vibrational and Thermal Behavior of Elastically-Mounted Cylinder Affected by Unilateral and Bilateral Jet Flow

Document Type : Research Article

Authors

Mechanical Engineering Department, Arak University of Technology, Arak, Iran

Abstract

In this paper, the active flow control of flow-induced vibration of a circular cylinder placed in the isothermal channel affected by jet injection is studied. The effect of flow injection on heat transfer inside the channel has also been examined. For this purpose, three slots are placed symmetrically in the upper and lower walls of the channel at distances 0, D, and 4D where D is the diameter of the cylinder from the side surface. The main innovation of the present study is to evaluate the effectiveness of the proposed flow control method in terms of channel height. For this purpose, 6 channels with heights of 5.5D, 6D, 7D, 8D, 9D, and 10D are considered to perform fluid-solid interaction simulations. The finite element method has been used to solve the flow and energy equations. For coupling the movement of the cylinder with the flow field, the dynamic mesh method is used. Numerical results show that for all channels with different heights, jet injection, either unilaterally or bilaterally, from slot 3, has no effect on displacement because the distance of the jet from the cylinder is large. By increasing the height of the channel, the injection velocity must be increased to completely reduce the oscillations of the cylinder.

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References

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Amirkabir Journal of Mechanical Engineering
Volume 54, Issue 3
June 2022
Pages 703-724

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