Dassault Systemes Simulia Corp.

Exa Corporation

Rupesh Kotapati

Hudong Chen

Raoyang Zhang

Ilya Staroselsky

Yanbing Li

Richard Shock

A computer-implemented method for simulating fluid flow using a lattice Boltzmann (LB) approach that includes assigning values for the wall shear stress on a per-facet (e.g., per-surfel) basis based on whether the fluid flow is laminar or turbulent is described herein.

Computer simulation of physical processes including modeling of laminar-to-turbulent transition

A method for simulating a fluid flow that includes a laminar to turbulent boundary layer transition on a computer, the method comprising: for one or more locations on or near a boundary surface: performing a first calculation where a local boundary layer is taken to be a laminar boundary layer; performing a second calculation where the local boundary layer is taken to be a turbulent boundary layer; comparing a result from the first calculation to a result from the second calculation; and based on the comparing, selecting the result of the first calculation or the result of the second calculation; and inputting the selected result for the one or more locations into a simulation of activity of a fluid in a volume comprising the boundary surface.

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Lowell, MA, United States of America

Rupesh Kotapati