Design and optimization of the FSC racing car intake system based on joint simulation using Fluent and GT-SUITE
Aiming at the restriction on engine power imposed by the Limiting valve mandated in the regulations of the 2023 Formula Student China Competition,a joint simulation using Fluent and GT-SUITE was conducted to design and optimize the intake system in order to reduce intake system resistance losses and enhance engine power performance.Fluent was utilized to perform Computational Fluid Dynamics(CFD)analysis on the Limiting valve,which resulted in optimal structural parameters:transition radius r=40 mm,contraction angle α=14,and expansion angle β=6°.An engine numerical simulation model was established using GT-SUITE to analyze the impact of other intake system structural parameters on the engine's charge coefficient and torque.Through rational structural optimization,the optimized values were found to be intake pipe length l=145 mm and the volume of the steady-state pressure chamber V=3.5 L.The simulation results indicated that the resistance loss of the Limiting valve decreased by 2.48%,leading to improved charge coefficient and torque across the low to medium speed range.Specifically,at 5 000 r/min,the charge coefficient increased by 2.61%.
Formula Student China(FSC)intake systemlimiting valvejoint simulation using Fluent and GT-SUITEstructural optimization
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