Solution of the implicitly discretised fluid flow equations by operator-splitting
Journal of Computational Physics
The numerical computation of turbulent flows
Computer Methods in Applied Mechanics and Engineering - Special edition on the 20th Anniversary
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This paper shows how a new moving/deforming mesh CFD technique can be used to simulate the swirling in-cylinder flow in a Diesel engine. Such transient simulation is necessary, since stationary measuring and simulation methods have been proven not to describe the conditions in such cylinders correctly in all cases.After an introduction to swirling flow in Diesel engines, swirl numbers and the respective stationary measuring methods, the results of stationary CFD-simulations are compared with experimental data. The new functionalities of moving and deforming meshes in FLUENT 6 are described and illustrated by an academic 2D engine cycle case. Finally the results of a three dimensional and transient simulation of the intake flow in a Deutz Diesel engine are presented and discussed.