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    COMPUTER SYSTEM FOR SIMULATING PHYSICAL PROCESSES USING SURFACE ALGORITHM
    5.
    发明申请
    COMPUTER SYSTEM FOR SIMULATING PHYSICAL PROCESSES USING SURFACE ALGORITHM 有权

    公开(公告)号：US20210406434A1

    公开(公告)日：2021-12-30

    申请号：US16914730

    申请日：2020-06-29

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Pradeep Gopalakrishnan ,  Raoyang Zhang ,  Hudong Chen ,  Junye Wang ,  Avinash Jammalamadaka

    IPC: G06F30/28 ,  G06F7/485 ,  G06N7/08

    Abstract: Described are computer implemented techniques for simulating elements of a fluid flow. These techniques 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, storing in a memory a representation of at least one surface that is sized and oriented independently of the size and orientation of the voxels, perform interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states, perform surface interaction operations on the representation of the surface, the surface interaction operations modelling interactions between the surface and substantially all elements of voxels, and performing move operations on the state vectors to reflect movement of elements to new voxels.

    COMPUTER SIMULATION OF PHYSICAL FLUIDS ON A MESH IN AN ARBITRARY COORDINATE SYSTEM
    7.
    发明申请
    COMPUTER SIMULATION OF PHYSICAL FLUIDS ON A MESH IN AN ARBITRARY COORDINATE SYSTEM 审中-公开

    公开(公告)号：US20200210539A1

    公开(公告)日：2020-07-02

    申请号：US16236799

    申请日：2018-12-31

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Hudong Chen ,  Raoyang Zhang ,  Pradeep Gopalakrishnan

    IPC: G06F17/50 ,  G01P5/00 ,  G06N7/08

    Abstract: Computer implemented techniques for simulating a fluid flow about a surface of a solid, include receiving a coordinate system for representation of a curvilinear mesh that conforms to the surface of the solid, simulating, with a lattice velocity set transport of particles in a volume of fluid, with the transport causing collision among the particles, executing a distribution function for transport of the particles, with the distribution function including a particle collision determination and a change in particle distribution associated with the curvilinear mesh, performing by the computing system, advection operations in the coordinate system under constraints applied to particle momentum values and mapping by the computer system values resulting from simulating onto the curvilinear mesh by translation of the particle momentum values and spatial coordinates determined in the coordinate system into momentum and spatial values in the curvilinear space.

    Computer system for simulating physical processes using surface algorithm
    8.
    发明授权
    Computer system for simulating physical processes using surface algorithm 有权

    公开(公告)号：US11847391B2

    公开(公告)日：2023-12-19

    申请号：US16914730

    申请日：2020-06-29

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Pradeep Gopalakrishnan ,  Raoyang Zhang ,  Hudong Chen ,  Junye Wang ,  Avinash Jammalamadaka

    IPC: G06F30/28 ,  G06F7/485 ,  G06N7/08 ,  G06F113/08

    CPC classification number: G06F30/28 ,  G06F7/485 ,  G06N7/08 ,  G06F2113/08

    Abstract: Described are computer implemented techniques for simulating elements of a fluid flow. These techniques 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, storing in a memory a representation of at least one surface that is sized and oriented independently of the size and orientation of the voxels, perform interaction operations on the state vectors, the interaction operations modelling interactions between elements of different momentum states, perform surface interaction operations on the representation of the surface, the surface interaction operations modelling interactions between the surface and substantially all elements of voxels, and performing move operations on the state vectors to reflect movement of elements to new voxels.

    Computer simulation of physical fluids on a mesh in an arbitrary coordinate system
    9.
    发明授权
    Computer simulation of physical fluids on a mesh in an arbitrary coordinate system 有权

    公开(公告)号：US11763048B2

    公开(公告)日：2023-09-19

    申请号：US18074646

    申请日：2022-12-05

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Hudong Chen ,  Raoyang Zhang ,  Pradeep Gopalakrishnan

    IPC: G06F30/20 ,  G01P5/00 ,  G06N7/08 ,  G06F111/10

    CPC classification number: G06F30/20 ,  G01P5/00 ,  G06N7/08 ,  G06F2111/10

    Abstract: Computer implemented techniques for simulating a fluid flow about a surface of a solid, include receiving a coordinate system for representation of a curvilinear mesh that conforms to the surface of the solid, simulating, with a lattice velocity set transport of particles in a volume of fluid, with the transport causing collision among the particles, executing a distribution function for transport of the particles, with the distribution function including a particle collision determination and a change in particle distribution associated with the curvilinear mesh, performing by the computing system, advection operations in the coordinate system under constraints applied to particle momentum values and mapping by the computer system values resulting from simulating onto the curvilinear mesh by translation of the particle momentum values and spatial coordinates determined in the coordinate system into momentum and spatial values in the curvilinear space.

    Lattice Boltzmann collision operators enforcing isotropy and Galilean invariance
    10.
    发明授权
    Lattice Boltzmann collision operators enforcing isotropy and Galilean invariance 有权

    公开(公告)号：US11194941B2

    公开(公告)日：2021-12-07

    申请号：US16580059

    申请日：2019-09-24

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Hudong Chen ,  Raoyang Zhang ,  Pradeep Gopalakrishnan

    IPC: G06F30/23 ,  G06F30/20 ,  G06F17/11 ,  G06F17/18 ,  G06F111/10

    Abstract: A method comprising: simulating, in a lattice velocity set, movement of particles in a volume of fluid, with the movement causing collision among the particles; based on the simulated movement, determining relative particle velocity of a particle at a particular location within the volume, with the relative particle velocity being a difference between (i) an absolute velocity of the particle at the particular location within the volume and measured under zero flow of the volume, and (ii) a mean velocity of one or more of the particles at the particular location within the volume; and determining, based on the relative particle velocity, a non-equilibrium post-collide distribution function of a specified order that is representative of the collision.

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