CFD PREDICTIONS REGARDING STABILITIES IN ROOLING OF THE TWO “LOGAN” EDITIONS

Mircea DIUDEA, Sergiu MARCIUC, Radu BALAN, Victor HODOR

Abstract


Present analyses concerns with the goal of demonstrating our recent skills in manipulating the use of numerical predictions, at the very beginning stage of a new automotive shell designing process. In order to demonstrate without any doubts and as clear as possible our expertise, we choose to evaluate something what has been already evaluated and confirmed by the reality. The Logan 2004 version, versus the Logan 2009 version, could be considered the most appropriated model to reveal the differences in stability given by some shape details –like adding a very small extra “aileron” at the back -shell design. Our CFD numerical investigations one can reveal the difference in terms of dynamic lift extra charge at the back suspension zone, and at the same time offer the possibility to reveal the risks to obtain some kinetic energy turbulences spectrum, in the way of an undesired resonance with the vibrations coming from the back suspension, on some medium running roadway conditions.

Key words:  CFD numerical prediction, LOGAN face lift, Aerodynamic stability, Kinetic energy spectrum, Suspension

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References


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