Investigation of Incompressible Flow Past Two Circular Cylinders of Different Diameters

  • Yogesh Bhumkar Indian Institute of Technology, Bhubaneshwar - 751 013
  • Priyank Kumar Birla Institute of Technology, Mesra, Ranchi -835 215
  • Arnab Roy Indian Institute of Technology Kharagpur- 721 302
  • Sudip Das Birla Institute of Technology, Mesra, Ranchi -835 215
  • Jai Kumar Prasad Birla Institute of Technology, Mesra, Ranchi -835 215
Keywords: Two-dimensional cylinders, Two cylinders in tandem, Different diameter cylinders, Incompressible flow

Abstract

A two - dimensional Navier-Stokes solver based on finite volume approach using a boundary-fitted curvilinear structured O-grid has been developed to obtain details of unconfined flow past cylinders at low Reynolds number of 100 and 200 based on diameter. Computations made on a single cylinder with smaller domain adopting the convective boundary conditions captured most of the flow features. This concept of a smaller domain, when used to capture the highly complex flow field around two cylinders of the same diameter placed in tandem at a Reynolds number of 200 showed reasonable results. The details of the flow field around two cylinders of different diameters placed at a typical distance of 3L and Reynolds number of 100 could be well captured adopting smaller domain concept. It is observed that the change in diameter of upstream cylinder strongly influences the overall flow field and the drag of the downstream cylinder.

Author Biographies

Yogesh Bhumkar, Indian Institute of Technology, Bhubaneshwar - 751 013

Dr Y.G. Bhumkar obtained his PhD from IIT Kanpur. He did his ME from BIT Mesra. Presently he is working as Assistant Professor at IIT Bhubaneswar. His research area includes advanced fluid mechanics, high performance computing for thermo-fluids applications.

Priyank Kumar, Birla Institute of Technology, Mesra, Ranchi -835 215

Dr P. Kumar obtained his PhD in Engineering from Birla Institute of Technology, Mesra Ranchi. He is presently working as Assistant Professor at Department of Space Engineering and Rocketry, BIT Mesra. His research area includes Low speed aerodynamics, high angles of attack, experimental aerodynamics.

Arnab Roy, Indian Institute of Technology Kharagpur- 721 302

Dr A. Roy obtained his PhD in Engineering from IIT Kharagpur.He has worked at BIT Mesra as an Assistant Professor before joining IIT Kharagpur as a faculty member. His research area includes computational fluid dynamics, single and multiphase fluid dynamics.

Sudip Das, Birla Institute of Technology, Mesra, Ranchi -835 215

Dr S. Das obtained his PhD in Engineering from Birla Institute of Technology, Mesra and a post-doc from Technion, Israel Institute of Technology. He is presently working as Professor at Department of Space Engineering and Rocketry, BIT Mesra. His research area includes High speed flows, shock boundary layer interaction, unsteady aerodynamics.

Jai Kumar Prasad, Birla Institute of Technology, Mesra, Ranchi -835 215

Dr J.K. Prasad obtained his PhD (Aerospace Engg.) from IIT, Madras. Currently he is working as Director at Birla Institute of Technology, Deoghar Center, Jharkhand. His area of research include: Aerodynamics, jets, jet interactions, etc.

Published
2017-09-19
How to Cite
BhumkarY., KumarP., RoyA., DasS., & PrasadJ. (2017). Investigation of Incompressible Flow Past Two Circular Cylinders of Different Diameters. Defence Science Journal, 67(5), 487-496. https://doi.org/10.14429/dsj.67.11087
Section
Aeronautical Systems