US 11,875,091 B2
Method for data-driven comparison of aerodynamic simulations
Brian T. Thurgate, Ypsilanti, MI (US)
Assigned to TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US)
Filed by TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., Plano, TX (US)
Filed on Sep. 5, 2019, as Appl. No. 16/561,422.
Prior Publication US 2021/0073351 A1, Mar. 11, 2021
Int. Cl. G06F 7/48 (2006.01); G06F 30/15 (2020.01); G01M 9/08 (2006.01); G07C 5/08 (2006.01); G06T 7/564 (2017.01); G06F 30/333 (2020.01)
CPC G06F 30/15 (2020.01) [G01M 9/08 (2013.01); G06T 7/564 (2017.01); G07C 5/0808 (2013.01); G06F 30/333 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method for evaluating computational fluid dynamic simulation results, the method comprising:
with a processor comprising a memory:
receiving a set of initial conditions;
based on the set of initial conditions, automatically performing a first baseline run with a computational fluid dynamics solver of a simulated area or volume containing a first vehicle body shape and, with the same computational fluid dynamics solver and the same set of initial conditions, performing a second baseline run of the simulated area or volume containing the same first vehicle body shape;
with the same computational fluid dynamics solver and based on the same set of initial conditions, automatically performing a change run of the simulated area or volume containing a second vehicle body shape; and
within the simulated area or volume:
automatically plotting an iso line of the first baseline run and a corresponding iso line of the second baseline run within a scalar variable map of at least a portion of the simulated area or volume;
automatically plotting an iso line of the change run within the scalar variable map, wherein the iso line of the change run corresponds to the iso line of the first baseline run and the iso line of the second baseline run; and
automatically comparing the iso line of the change run to the iso line of the first baseline run and the iso line of the second baseline run,
wherein a difference between the first baseline run and the second baseline run provides information regarding stochastic run-to-run noise variability of the computational fluid dynamic simulation results introduced by the computational fluid dynamics solver,
wherein the change run obviates the need for testing of a second physical model of the second vehicle body shape, and
wherein an iso line is a line on a map or chart along which there is a constant value.