Development-Class car, maintaining strict compliance with dimensional, visibility, and safety envelopes. Secondary goals are manufacturability and repeatability. Simulation type. External aerodynamics; steady, incompressible RANS with the k-ω SST turbulence model. Moving ground plane at free-stream speed, velocity-inlet and pressure-outlet, no-slip walls, double-precision; wheels modelled as no-slip walls with optional rotating-wall sensitivity. Project description. The study compares parametric CAD variants (B1–B3 bodies × F1–F3 front wings × R1–R3 rear wings). Each watertight assembly is placed in a wind-on domain (~10L upstream, 20L downstream, 10W lateral, 10H vertical). We generate hex/poly-dominant meshes with inflation near the body; local refinement captures leading edges, wheel-wake interaction, diffuser entrainment and rear-wing upwash. Screening uses wall-function resolution (target y⁺≈30–50) for speed; the final candidate is re-meshed to low-Re (y⁺≈1–2) for verification. Three mesh densities establish mesh-independence (ΔCd ≤ ~1–2% between the two finest). Convergence requires residuals ≤1e-5 plus stable force monitors. KPIs: Cd, frontal area normalisation, pressure recovery over the cartridge roof, separation size/position, wheel-wake cleanliness, and pitch/yaw moments. Visual outputs include static-pressure maps and Q-criterion/streamlines to explain changes. Short-listed designs are validated against track data (IR timing splits and 240-fps launch video). Deliverables: a ranked variant table, plots for Cd vs. mesh, variant bar chart (normalised Cd), and annotated renders for the final legal geometry.
by simscalesimscale
by ahmedhussain18ahmedhussain18
by ahmedhussain18ahmedhussain18
by ahmedhussain18ahmedhussain18
ababerwal created this project
3 months ago