Incompressible Boundary Layer Control for Flow Past Circular Cylinder: Numerical Study - Softcover

Ghosh, Suday Kumar

Softcover

ISBN 10: 3639288947 ISBN 13: 9783639288940

Publisher: VDM Verlag Dr. Müller, 2010

Synopsis

Present work investigates effects of application of different boundary layer control mechanisms on 2-D incompressible laminar flow around circular cylinder at different ?ow conditions. It focuses unsteady cases with its transient conditions. Unsteady Navier-Stokes equations are deployed. In tangential blowing from cylinder surface, both point blowing and span blowing are considered to study variations of lift, drag by varying blowing port positions and intensity of blowing. Effects on unsteadiness are also examined. In case of rotation of cylinder surface for controlling boundary layer, lift and drag are inves¬tigated by varying rotational speeds. Rotation has been found to have strong in?uence on ?ow and mode of vortex shedding gets changed from the surface. Rotational oscillation of cylinder surface, both for Lock-on and non-Lock-on cases have been studied. Frequency and amplitude of rotational oscillation are made to vary to investigate effects on the lift and drag. It reveals that the effect of amplitude of oscillation on drag is complicated and ratio of forcing frequency and natural frequency affects ?ow conditions substantially.

About this title

About the Author

Suday Kumar Ghosh obtained his Ph.D. in Computational Fluid Dynamics from the Department of Aerospace Engineering and Applied Mechanics of Bengal Engineering and Science University, Shibpur, Howrah. He contributed to several national and international journals and conferences. At present he is working on flow instability.

Edition details

• Publisher: VDM Verlag Dr. Müller
• Publication date: 2010
• Language: English
• ISBN 10: 3639288947
• ISBN 13: 9783639288940
• Binding: Paperback
• Number of pages: 284