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    Computer simulation of physical processes including modeling of laminar-to-turbulent transition
    2.
    发明授权
    Computer simulation of physical processes including modeling of laminar-to-turbulent transition 有权
    物理过程的计算机模拟，包括层流到湍流过渡的建模

    公开(公告)号：US09542506B2

    公开(公告)日：2017-01-10

    申请号：US13675329

    申请日：2012-11-13

    Applicant: Exa Corporation

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

    IPC: G06G7/50 ,  G06F17/50

    CPC classification number: G06F17/5018 ,  G06F17/11 ,  G06F17/5009 ,  G06F2217/16

    Abstract: 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.

    Abstract translation: 一种用于模拟包括计算机上的湍流边界层过渡的层流的流体流的方法，所述方法包括：对于边界表面上或附近的一个或多个位置进行第一计算，其中局部边界层被认为是 层流边界层; 执行第二计算，其中局部边界层被认为是湍流边界层; 将来自第一计算的结果与来自第二计算的结果进行比较; 并且基于比较，选择第一次计算的结果或第二次计算的结果; 以及将所述一个或多个位置的所选择的结果输入到包括所述边界表面的体积中的流体的活动的模拟。

    Computer Simulation of Fluid Flow and Acoustic Behavior
    3.
    发明申请
    Computer Simulation of Fluid Flow and Acoustic Behavior 有权
    流体流动和声学行为的计算机模拟

    公开(公告)号：US20150242553A1

    公开(公告)日：2015-08-27

    申请号：US14710282

    申请日：2015-05-12

    Applicant: Exa Corporation

    Inventor： Chenghai Sun ,  Franck Léon Pérot ,  Raoyang Zhang ,  Hudong Chen ,  David M. Freed ,  Ilya Staroselsky

    IPC: G06F17/50 ,  G06F17/10

    CPC classification number: G06F17/5009 ,  G06F17/10 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/16 ,  G06F2217/82

    Abstract: A computer-implemented method for simulating flow and acoustic interaction of a fluid with a porous medium includes simulating activity of a fluid in a first volume adjoining a second volume occupied by a porous medium, the activity of the fluid in the first volume being simulated so as to model movement of elements within the first volume and using a first model having a first set of parameters, simulating activity of the fluid in the second volume occupied by the porous medium, the activity in the second volume being simulated so as to model movement of elements within the second volume and using a second model having a second set of parameters and differing from the first model in a way that accounts for flow and acoustic properties of the porous medium, and simulating movement of elements between the first volume and the second volume at an interface between the first volume and the second volume.

    Abstract translation: 用于模拟流体与多孔介质的流动和声学相互作用的计算机实现的方法包括模拟邻近由多孔介质占据的第二体积的第一体积中的流体的活性，第一体积中的流体的活性被模拟 为了模拟第一体积内的元件的运动并且使用具有第一组参数的第一模型，模拟多孔介质占据的第二体积中的流体的活动，模拟第二体积中的活动以模拟运动 并且使用具有第二组参数并且以考虑多孔介质的流动和声学特性的方式与第一模型不同的第二模型，以及模拟元件在第一体积和第二体积之间的运动 在第一卷和第二卷之间的界面处的卷。

    Cascaded eddy simulation
    7.
    发明授权
    Cascaded eddy simulation 有权
    级联涡流模拟

    公开(公告)号：US09223909B2

    公开(公告)日：2015-12-29

    申请号：US13943853

    申请日：2013-07-17

    Applicant: Exa Corporation

    Inventor： Hudong Chen ,  Steven Orszag ,  Ilya Staroselsky ,  Victor Yakhot ,  Raoyang Zhang

    IPC: G06G7/50 ,  G06G7/48 ,  G06F17/50 ,  G06T13/20

    CPC classification number: G06F17/5009 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/16 ,  G06T13/20 ,  G06T2210/24

    Abstract: A fluid flow is simulated by causing a computer to perform operations on data stored in the memory to compute at least one eddy of a fluid flow at a first scale and perform operations to compute at least one eddy of the fluid flow at both the first scale and a second scale. The second scale is a finer scale than the first scale, and the computation of the at least one eddy of the fluid flow at the second scale is constrained by results of the computation of the at least one eddy of the fluid flow at the first scale.

    Abstract translation: 通过使计算机对存储在存储器中的数据执行操作来模拟流体流，以计算第一尺度的流体流的至少一个涡流，并且执行操作以在第一比例计算流体流的至少一个涡流 和第二个比例。 第二尺度是比第一尺度更精细的尺度，并且在第二尺度处的流体流的至少一个涡流的计算受到在第一尺度处的流体流的至少一个涡流的计算的结果的约束 。

    Cascaded Eddy Simulation
    9.
    发明申请
    Cascaded Eddy Simulation 有权
    级联涡流模拟

    公开(公告)号：US20130317794A1

    公开(公告)日：2013-11-28

    申请号：US13943853

    申请日：2013-07-17

    Applicant: Exa Corporation

    Inventor： Hudong Chen ,  Steven Orszag ,  Ilya Staroselsky ,  Victor Yakhot ,  Raoyang Zhang

    IPC: G06F17/50

    CPC classification number: G06F17/5009 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/16 ,  G06T13/20 ,  G06T2210/24

    Abstract: A fluid flow is simulated by causing a computer to perform operations on data stored in the memory to compute at least one eddy of a fluid flow at a first scale and perform operations to compute at least one eddy of the fluid flow at both the first scale and a second scale. The second scale is a finer scale than the first scale, and the computation of the at least one eddy of the fluid flow at the second scale is constrained by results of the computation of the at least one eddy of the fluid flow at the first scale.

    Abstract translation: 通过使计算机对存储在存储器中的数据执行操作来模拟流体流，以计算第一尺度的流体流的至少一个涡流，并且执行操作以在第一比例计算流体流的至少一个涡流 和第二个比例。 第二尺度是比第一尺度更精细的尺度，并且在第二尺度处的流体流的至少一个涡流的计算受到在第一尺度处的流体流的至少一个涡流的计算的结果的约束 。

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