Vehicle Flow Field Numerical Simulation Analysis And Visualization

This paper applyed vortex cloud to solute N-S equation and simulated two dimension flow field around high speed car. In addition, it reviewed the aerodynamics characteristic and provided consult for form design of car. In numerical stimulation, it lay stress on produce, progress and dissipation of vortex in the flow field. In the paper, foward and after treat program of vortex cloud program were written. At same time, provided vortex cloud caculation with data. Caculate results were prosessed, analyzed and evaluated. Flow field figure and prees distributing curve were protracted. At last, flow field was caculated by vortex cloud method. lift coefficient and drag coefficient were gained. In caculation, aerodynamics characteristic outside bus was caculated emphatically, lift coefficient and drag coefficient of different bus were gained. Flow velocity vectorgragh and press distributing figure were protracted.Caculated results display influence of form disign to aerodynamics characteristic of bus.