Abstract No.F171126-020

Author name(s): Avijit Sharma, Kamal Yadav, Md. Ayaz J. Khan

Company: Tolani Maritime Institute, Pune

Turbulence exists across the whole human and natural environment, which is a matter of concern in terms of global energy consumption. Ruducing the frictional force in turbulence to the greatest extent is becoming an urgent issue that needs to be resolved. Drag reduction is the science of flow improvement through the reduction of frictional pressure drop across a pipe or a channel.The paper examines the effectiveness of wall oscillation as a control scheme for drag reduction. Results include the effects of oscillation frequency and peak-to-peak amplitude of transverse wall oscillation on drag reduction at two different velocities lying in the low and high velocity zone. For the simulation ,mesh is generated for the static conditions of the plate for the two inlet velocities which are theoretically validated for both two and three dimensional fluid domain .The simulation gives an insight on the phenomenon which occurs when the plate oscillates taking into consideration the analysis of computed local skin friction coefficient in the length-wise and span-wise directions over the plate as well as the total viscous drag value.

KEY WORDS: Turbulence; Spanwise; Drag; Oscillation; Wall; Boundary Layer; Hydrodynamics

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