Investigation into the e ect of intake port geometric parameters and blockage on flow coecient and in-cylinder flow: Application to engine port design


School of Mechanical Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-9567, Iran


The Computational Fluid Dynamics (CFD) method is employed to gain further insight into the characteristics of the in-cylinder flow fi eld. Comparison between the measured and predicted results of the in-cylinder tumble flow and flow coecient generated by a port-valve-liner assembly, on a steady- flow test bench, is presented, and a reasonably good level of agreement is achieved. A CAD parametric model of port geometry is created to enable variations, practically and quickly. Employing CFD analysis, the relationship between design parameters and port

ow characteristics is established. The in uence of new blockage patterns on in-cylinder flow is also studied.