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    Turbulent Boundary Layer Modeling via Incorporation of Pressure Gradient Directional Effect
    14.
    发明申请
    Turbulent Boundary Layer Modeling via Incorporation of Pressure Gradient Directional Effect 审中-公开

    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.

    COMPUTER SYSTEM FOR SIMULATING PHYSICAL PROCESSES USING SURFACE ALGORITHM
    16.
    发明公开
    COMPUTER SYSTEM FOR SIMULATING PHYSICAL PROCESSES USING SURFACE ALGORITHM 审中-公开

    公开(公告)号：US20240160817A1

    公开(公告)日：2024-05-16

    申请号：US18503323

    申请日：2023-11-07

    Applicant: Dassault Systemes Simulia Corp.

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

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

    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
    18.
    发明授权
    Computer simulation of physical fluids on a mesh in an arbitrary coordinate system 有权

    公开(公告)号：US11544423B2

    公开(公告)日：2023-01-03

    申请号：US16236799

    申请日：2018-12-31

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Hudong Chen ,  Raoyang Zhang ,  Pradeep Gopalakrishnan

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

    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.

    Acoustic effects of a mesh on a fluid flow
    20.
    发明授权
    Acoustic effects of a mesh on a fluid flow 有权

    公开(公告)号：US11042674B2

    公开(公告)日：2021-06-22

    申请号：US15729216

    申请日：2017-10-10

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Adrien Mann ,  Chenghai Sun ,  Hudong Chen ,  Raoyang Zhang ,  Franck Léon Pérot

    IPC: G06F30/20 ,  G06F30/15 ,  G06F30/23 ,  G06F119/10

    Abstract: The description describes one or more processing devices and one or more hardware storage devices storing instructions that are operable, when executed by the one or more processing devices, to cause the one or more processing devices to perform operations including modeling the porous material as a two-dimensional interface, in a simulation space, in which fluid flows and sound waves travel through the porous material and experience pressure and acoustic losses. The operations also include simulating, in the simulation space, fluid flow and propagation of sound waves, the activity of the fluid being simulated so as to simulate movement of elements within the simulation space and across the interface, where the simulation of the movement of the elements across the interface is governed by the model.

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