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Sādhanā

, 44:5 | Cite as

Effect of downstream cylinder rotation on wake dynamics of two inline circular cylinders

  • M Neeraj Paul
  • Shaligram TiwariEmail author
Article
  • 47 Downloads

Abstract

Two-dimensional numerical investigations have been carried out to study flow past two inline circular cylinders with stationary upstream and rotating downstream cylinder. Computations are performed using commercial software ANSYS Fluent 16.0 for a fixed Reynolds number (Re) of 150 to study wake characteristics unsteady laminar flow. Optimal values of spacing between cylinders and downstream cylinder rotation speed have been identified, confirming the suitability of such an arrangement for drag reduction and flow control. Steady and unsteady features of the wake have been examined with the help of vorticity contours, lift and drag coefficients, their signals and spectra. Interesting phenomena that include multiple transitions in the temporal behavior of the flow and appearance of circulation zone, its development, stabilization, and transformation have been elaborated in this study.

Keywords

Two inline circular cylinders rotating downstream cylinder inter-cylinder spacing wake transition circulation zone lift and drag flow control 

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Copyright information

© Indian Academy of Sciences 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringIndian Institute of Technology MadrasChennaiIndia

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