Volume 16, Issue 1, June 2015, Pages 159–170
Parth Batra1, Gaurav Kumar2, Kishlay Srivastava3, and M.B. Shyam Kumar4
1 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
2 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
3 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
4 Associate Professor, School of Mechanical and Building Sciences, VIT University, Chennai, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The present paper focus on reduction of drag force behind a bluff body by using a passive method. Numerical simulations have been carried out for ten different isolated cylindrical geometries at a Reynolds number of 100. Influences of corner radii on the drag force behind a two dimensional bluff body have been investigated using ANSYS FLUENT. It was found that the critical radius at which the drag force turned to be minimum compared to the circular cylinder was R=D/3. The results in terms of the bulk parameters like time history of drag and lift coefficients, Strouhal number, recirculation length and contours of pressure, vorticity and streamlines have been discussed.
Author Keywords: Bluff body, Reynolds number, Rounded corner, Passive method, Drag, Lift, CFD, Vortex shedding.
Parth Batra1, Gaurav Kumar2, Kishlay Srivastava3, and M.B. Shyam Kumar4
1 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
2 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
3 Student, Bachelor of Technology, School of Mechanical and Building Sciences, VIT University, Chennai, India
4 Associate Professor, School of Mechanical and Building Sciences, VIT University, Chennai, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The present paper focus on reduction of drag force behind a bluff body by using a passive method. Numerical simulations have been carried out for ten different isolated cylindrical geometries at a Reynolds number of 100. Influences of corner radii on the drag force behind a two dimensional bluff body have been investigated using ANSYS FLUENT. It was found that the critical radius at which the drag force turned to be minimum compared to the circular cylinder was R=D/3. The results in terms of the bulk parameters like time history of drag and lift coefficients, Strouhal number, recirculation length and contours of pressure, vorticity and streamlines have been discussed.
Author Keywords: Bluff body, Reynolds number, Rounded corner, Passive method, Drag, Lift, CFD, Vortex shedding.
How to Cite this Article
Parth Batra, Gaurav Kumar, Kishlay Srivastava, and M.B. Shyam Kumar, “DRAG REDUCTION BEHIND A BLUFF BODY,” International Journal of Innovation and Scientific Research, vol. 16, no. 1, pp. 159–170, June 2015.
