3-D Modeling of Axial Fans

Ali Sahili, Bashar Zogheib, Ronald M. Barron

Department of Mathematics and Natural Sciences, American University of Kuwait, Salmiya, Kuwait.
Department of Mathematics and Physics, Lebanese International University, Beirut, Lebanon.
Department of Mathematics and Statistics, University of Windsor, Windsor, Canada.

DOI: 10.4236/am.2013.44088                

Abstract

In this paper we present a full-geometry Computational Fluid Dynamics (CFD) modeling of air flow distribution from an automotive engine cooling fan. To simplify geometric modeling and mesh generation, different solution domains have been considered, the Core model, the Extended-Hub model, and the Multiple Reference Frame (MRF) model. We also consider the effect of blockage on the flow and pressure fields. The Extended-Hub model simplifies meshing without compromising accuracy. Optimal locations of the computational boundary conditions have been determined for the MRF model. The blockage results in significant difference in pressure rise, and the difference increases with increasing flow rates. Results are in good agreement with data obtained from an experimental test facility. Finally, we consider Simplified Fan Models which simplifies geometric modeling and mesh generation and significantly reduce the amount of computer memory used and time needed to carry out the calculations. Different models are compared in regards to efficiency and accuracy. The effect of using data from different planes is considered to optimize performance. The effect of blockage on simplified models is also considered.

Keywords

CFD; Modeling; Mesh Generation; Engine Cooling Fan

Conflicts of Interest

The authors declare no conflicts of interest.

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