Patent ID: 11875091
Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 4:
5. A computer-implemented method for evaluating computational fluid dynamic simulation results, the method comprising:
providing a first vehicle body shape or portion of a vehicle body shape to be simulated;
providing a set of initial conditions;
with a processor comprising a memory:
with a computational fluid dynamics solver, automatically performing at least three baseline runs of a simulated area or volume containing the first vehicle body shape using the set of initial conditions;
with the same computational fluid dynamics solver and the same set of initial conditions, automatically performing a change run of the simulated area or volume containing a second vehicle body shape using the set of initial conditions; and
for each point within a scalar variable map of at least a portion of the simulated area or volume:
automatically defining a mean expectation line of averages of an iso line from each of the at least three baseline runs, and plotting a confidence interval around the mean expectation line;
automatically plotting an iso line of the change run that corresponds to the iso lines from each of the at least three baseline runs; and
automatically comparing the iso line of the change run to the confidence interval,
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.