Numerical simulation of the flowfield in a motored two-dimensional Wankel engine

Abstract

Numerical solutions were obtained to study the unsteady, multidimensional fluid flow and fuel-air mixing inside the combustion chambers of a motored, two-dimensional Wankel rotary engine during the intake and compression cycles. The effects of the following engine design and operating parameters on fluid flow and fuel-air mixing were investigated: engine speed, direction of gaseous fuel injection into the combustion chamber, and speed of the injected fuel. Results of the numerical study show that engine speed and speed of the injected fuel have significant effects on fluid flow and fuel-air mixing. The direction of fuel injection was found to have less effects on the flow.