NUMERICAL ANALYSIS OF AN AHMED BODY WITH DIFFERENT SOFTWARE PACKAGES

Simon  Muhič; Matej  Štefanič

doi:10.18690/jet.10.1.11-21.2017

Simon Muhič Faculty of Technologies and Systems
Matej Štefanič Faculty of Technologies and Systems

DOI: https://doi.org/10.18690/jet.10.1.11-21.2017

Keywords: Computational Fluid Dynamics, Ahmed Body, Numerical analysis, Ansys Fluent, Solid-Works Flow Simulation

Abstract

In this article, the results of CFD simulations are compared using two different software packages for numerical fluid dynamics. The analysis is performed for an Ahmed body, for which the measurement results and a variety of numerical simulations are available in the literature. The results of the stationary CFD simulations with the RANS approach show a significant difference between the results obtained with the SolidWorks Flow Simulation 2014 software and ANSYS Fluent 16.2 software in the air flow analysis area from 10 m/s to 60 m/s. The difference in computational time is also apparent.

Downloads

Download data is not yet available.

References

I. Ščuri, M. Pezdevšek, I. Spaseski, M. Fike and G. Hren, “Numerical analysis of an axial flow fan: ANSYS vs SolidWorks,” Journal of Energy Technology, vol. 4, pp. 11-19, 2014

I. Spaseski, M. Pezdevšek, I. Ščuri, G. Hren and M. Fike, “Numerical analysis of lift and pressure coefficient on fan airfoil: ANSYS vs SolidWorks,” Journal of energy technology, vol. 3, pp. 63-73, 2014

S. Ahmed and G. Ramm, “Some salient features of the time-averaged ground vehicle wake,” SAE Technical Paper 840300, 1984

W. Meile, G. Brenn, A. Reppenhagen, B. Lechner and A. Fuchs, “Experiments and numerical simulations on the earodynamics of the Ahmed body,” CFD Letters, vol. 1, pp. 32-38, 2010

Y. Liu and A. Moser, “Numerical modeling of airflow over the Ahmed body,” in Proceeding of the 11th Annual Conference of the CFD Society of Canada, 2003

S. Krajnović and G. Mineli, “LES investigation of the asymmetry in the wake of a generic vehicle body,” in 4th International conference on Jets, Wakes and Separated Flows, ICJWS2013 IMECE 2013, 2013

C. Hinterberger, M. Garcia-Villalba and W. Rodi, “Large eddy simulation of flow around the Ahmed body,” in The Aerodynamics of Heavy Vehicles: Trucks, Buses, and Trains, Volume 1, 2004

M. K. A. B. Salleh, Simulation and analsys drag and lift coefficent between sedan and hatchback car. Bachelor thesis, PAHANG: University Malaysia Pahang, 2009

M. Lanfrit, “Best practice guidelines for handling Automotive External Aerodynamics with FLUENT,” 2005. [Online]. Available:http://www.southampton.ac.uk/~nwb/lectures/GoodPracticeCFD/Articles/Ext_Aero_Best_Practice_Ver1_2.pdf. (25. 10. 2016)