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

Claim 12:
13. A system for testing the fluid dynamic characteristics of body shapes of a vehicle, the system comprising:
a processor comprising:
a memory;
a display; and
a user interface configured to receive inputs from a user,

wherein the processor is configured to:
receive a first body shape of a vehicle to be simulated;
receive a set of initial conditions;
with a computational fluid dynamics solver, automatically perform at least two baseline runs of a simulated area or volume containing the first body shape of the vehicle using the set of initial conditions;
with the same computational fluid dynamics solver and the same set of initial conditions, automatically perform a change run of the simulated area or volume using 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 define a mean expectation line of averages of an iso line from each of the at least two baseline runs, and plot a confidence interval around the mean expectation line;
automatically plot an iso line of the change run that corresponds to the iso lines from each of the at least two baseline runs; and
automatically compare the iso line of the change run to the confidence interval wherein the first baseline run obviates the need for testing of a first physical model of the first vehicle body shape,
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.