Abstract: This text studies second grade viscoelastic fluid past a cavity in a horizontal channel. Various flow patterns were studied by changing Reynolds number, elastic coefficient and cavity length. The results of the steady state viscoelastic fluid flow characteristics were obtained.
The analysis reveals that by changing the elasticity coefficient and Reynolds number, the recirculation height reduces in the cavity. The flow patterns were shown due to the influence of the Reynolds number and the elastic coefficient. When the relative height of the backward-facing step and the forward-facing step of the cavity changed, the flow pattern the cavity flow would changed and the recirculation position in the cavity also changed.

Brief Biography of the Speaker:
Kuang-Yuan Kung is a professor of the Department of Mechanical Engineering at Jhongli City, Nanya Institute of Technology, Taiwan. He got master degree from Feng Chia University in Mechanical Engineering major at 1985 and Dr. Degree from Chung-Yuan Christian University in Mechanical Engineering major at 1996.His area of expertise is the heat transfer aspects of advanced manufacturing technology and differential equation analysis. He authored or co-authored over 60 scientific papers published in reviewed journals or presented at international conferences. He had the opportunity to be a visiting researcher at National Taiwan University of Science and Technology and he is a member of editorial advisory board of the Open Ocean Engineering Journal.