公开(公告)号：US20200285710A1

公开(公告)日：2020-09-10

申请号：US16294242

申请日：2019-03-06

Applicant: Dassault Systemes Simulia Corp.

Inventor： Hudong Chen ,  Raoyang Zhang ,  Yanbing Li

IPC: G06F17/50

Abstract: Disclosed are techniques for performing a flow simulation that include storing in a memory state vectors for a plurality of voxels, the state vectors comprising a plurality of entries that correspond to particular momentum states of a plurality of possible momentum states at a voxel. The techniques also include storing in a memory a representation of at least one surface and performing interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states. The techniques also include performing surface interaction operations which model interactions between the surface and elements of at least one voxel near the surface, including modeling a to wall shear stress direction that is not parallel to a flow velocity direction and performing move operations on the state vectors to reflect movement of elements to new voxels.

公开(公告)号：US11379636B2

公开(公告)日：2022-07-05

申请号：US16699829

申请日：2019-12-02

Applicant: Dassault Systemes Simulia Corp.

Inventor： Pradeep Gopalakrishnan ,  Hudong Chen ,  Raoyang Zhang ,  Avinash Jammalamadaka ,  Yanbing Li

IPC: G06F30/23 ,  G06F113/08 ,  G06F30/28 ,  G06F111/10

Abstract: Techniques for simulating fluid flow using a lattice Boltzmann (LB) approach for solving scalar transport equations and solving for total energy are described. In addition to the lattice Boltzmann functions for fluid flow the techniques include modifying a set of state vectors of the particles by adding specific total energy to states of particles that will be advected and subtracting the specific total energy from states of particles that will not be advected over a time interval and performing advection of the particles according to the modified set of states.

公开(公告)号：US11188692B2

公开(公告)日：2021-11-30

申请号：US16294242

申请日：2019-03-06

Applicant: Dassault Systemes Simulia Corp.

Inventor： Hudong Chen ,  Raoyang Zhang ,  Yanbing Li

IPC: G06F30/20

Abstract: Disclosed are techniques for performing a flow simulation that include storing in a memory state vectors for a plurality of voxels, the state vectors comprising a plurality of entries that correspond to particular momentum states of a plurality of possible momentum states at a voxel. The techniques also include storing in a memory a representation of at least one surface and performing interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states. The techniques also include performing surface interaction operations which model interactions between the surface and elements of at least one voxel near the surface, including modeling a wall shear stress direction that is not parallel to a flow velocity direction and performing move operations on the state vectors to reflect movement of elements to new voxels.

公开(公告)号：US20200250362A1

公开(公告)日：2020-08-06

申请号：US16699829

申请日：2019-12-02

Applicant: Dassault Systemes Simulia Corp.

Inventor： Pradeep Gopalakrishnan ,  Hudong Chen ,  Raoyang Zhang ,  Avinash Jammalamadaka ,  Yanbing Li

IPC: G06F30/23

Abstract: Techniques for simulating fluid flow using a lattice Boltzmann (LB) approach for solving scalar transport equations and solving for total energy are described. In addition to the lattice Boltzmann functions for fluid flow the techniques include modifying a set of state vectors of the particles by adding specific total energy to states of particles that will be advected and subtracting the specific total energy from states of particles that will not be advected over a time interval and performing advection of the particles according to the modified set of states.

公开(公告)号：US10671776B2

公开(公告)日：2020-06-02

申请号：US15363958

申请日：2016-11-29

Applicant: Dassault Systemes Simulia Corp.

Inventor： Hudong Chen ,  Rupesh Kotapati ,  Raoyang Zhang ,  Richard Shock ,  Ilya Staroselsky ,  Yanbing Li

IPC: G06F30/23 ,  G06F30/20 ,  G06F17/11 ,  G06F111/10

Abstract: 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.

公开(公告)号：US20220188485A1

公开(公告)日：2022-06-16

申请号：US17689131

申请日：2022-03-08

Applicant: Dassault Systemes Simulia Corp.

Inventor： Pradeep Gopalakrishnan ,  Hudong Chen ,  Raoyang Zhang ,  Avinash Jammalamadaka ,  Yanbing Li

IPC: G06F30/23

Abstract: Techniques for simulating fluid flow using a lattice Boltzmann (LB) approach for solving scalar transport equations and solving for total energy are described. In addition to the lattice Boltzmann functions for fluid flow the techniques include modifying a set of state vectors of the particles by adding specific total energy to states of particles that will be advected and subtracting the specific total energy from states of particles that will not be advected over a time interval and performing advection of the particles according to the modified set of states.

公开(公告)号：US20200285709A1

公开(公告)日：2020-09-10

申请号：US16293983

申请日：2019-03-06

Applicant: Dassault Systemes Simulia Corp.

Inventor： Hudong Chen ,  Raoyang Zhang ,  Yanbing Li

IPC: G06F17/50 ,  G06F17/16

Abstract: Disclosed are techniques for performing a flow simulation that include storing in a memory state vectors for a plurality of voxels, the state vectors comprising a plurality of entries that correspond to particular momentum states of a plurality of possible momentum states at a voxel. The techniques also include storing in a memory a representation of at least one surface and performing interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states. The techniques also include performing surface interaction operations which model interactions between the surface and elements of at least one voxel near the surface, including modeling a to wall shear stress direction that is not parallel to a flow velocity direction and performing move operations on the state vectors to reflect movement of elements to new voxels.