公开(公告)号：WO2019140108A1

公开(公告)日：2019-07-18

申请号：PCT/US2019/013079

申请日：2019-01-10

Applicant: EXA CORPORATION

Inventor： CROUSE, Bernd ,  FREED, David M.

IPC: G01N13/00 ,  G01N23/046

Abstract: Techniques including methods, apparatus and computer program products are disclosed. These techniques include computer instructions that are encoded on computer storage media for determining wettability. The techniques use a numerical aging computation process to provide a representation of a wettability alteration of a physical rock sample in the presence of at least two fluids is disclosed. The techniques include retrieving a representation of a physical rock sample, the representation including pore space and grain space data corresponding to the physical rock sample, calculating local curvature for each surface in the pore space, determining from the calculated local curvature whether water-film breakage will occur, and classifying the wettability of the physical rock based on the determination of water-film breakage.

公开(公告)号：WO2017142750A1

公开(公告)日：2017-08-24

申请号：PCT/US2017/016887

申请日：2017-02-08

Applicant: EXA CORPORATION

Inventor： TATE, Edward, Dean, JR.

IPC: G01R31/36 ,  G06F19/00 ,  G01K7/42 ,  H01M10/05 ,  H01M10/48

CPC classification number: G06F17/5009 ,  G06F17/11 ,  G06F17/5036 ,  G06F2217/16 ,  G06F2217/78

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for the generation and use of an electro-thermal battery model. One of the methods includes obtaining battery data comprising voltage values, with each voltage value corresponding to an operating state of the battery. The method includes selecting a battery model having convex parameters and non-convex parameters. The method includes processing the battery data by performing a fitting procedure to determine values of the convex parameters and non-convex parameters. The fitting procedure includes fitting the convex parameters with respect to the battery data during which the non-convex parameters are held fixed. The fitting procedure includes fitting the non-convex parameters with respect to the battery data. The fitting procedure also includes creating an electro-thermal model for a battery from the selected battery model using the fitted values.

Abstract translation: 包括编码在计算机存储介质上的计算机程序的方法，系统和装置用于生成和使用电热电池模型。 其中一种方法包括获得包括电压值的电池数据，其中每个电压值对应于电池的操作状态。 该方法包括选择具有凸参数和非凸参数的电池模型。 该方法包括通过执行拟合程序来处理电池数据以确定凸参数和非凸参数的值。 拟合程序包括针对非固定参数保持固定的电池数据拟合凸参数。 拟合程序包括针对电池数据拟合非凸参数。 拟合程序还包括使用拟合值为所选电池模型创建电池的电热模型。

公开(公告)号：WO2014137750A1

公开(公告)日：2014-09-12

申请号：PCT/US2014/019074

申请日：2014-02-27

Applicant: EXA CORPORATION

Inventor： PÉROT, Franck Léon ,  MANN, Adrien ,  FREED, David M.

IPC: G06F19/00

CPC classification number: G06F17/5009 ,  G06F2217/16

Abstract: A system and method for automatically detecting and tracking time and space variations of flow structures in order to locate and characterize the flow structures which produce noise and to quantify the corresponding acoustic radiation properties. A system and method for automatically detecting and tracking time and space variations of flow structures in order to locate and characterize the flow structures which produce noise and to quantify the corresponding acoustic radiation properties is described herein.

Abstract translation: 一种用于自动检测和跟踪流动结构的时间和空间变化的系统和方法，以便定位和表征产生噪声的流动结构并量化相应的声辐射性质。 本文描述了一种用于自动检测和跟踪流动结构的时间和空间变化以便定位和表征产生噪声并量化对应的声辐射性质的流动结构的系统和方法。

公开(公告)号：WO2008008896A3

公开(公告)日：2008-01-17

申请号：PCT/US2007/073366

申请日：2007-07-12

Applicant: EXA CORPORATION ,  CHEN, Hudong ,  ORSZAG, Steven ,  STAROSELSKY, Ilya ,  YAKHOT, Victor ,  ZHANG, Raoyang

Inventor： CHEN, Hudong ,  ORSZAG, Steven ,  STAROSELSKY, Ilya ,  YAKHOT, Victor ,  ZHANG, Raoyang

IPC: G06G7/48 ,  G06G7/50

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 (410) and perform operations to compute at least one eddy of the fluid flow at both the first scale (410) and a second scale (420). The second scale is a finer scale than the first scale, and the computation of the at least one eddy of the fluid flow is constrained by results of the computation of the at least one eddy of the fluid flow at the first scale (420)

公开(公告)号：WO2017222991A1

公开(公告)日：2017-12-28

申请号：PCT/US2017/038143

申请日：2017-06-19

Applicant: EXA CORPORATION

Inventor： MANN, Adrien ,  PÉROT, Frank Léon

IPC: G01H17/00 ,  G06F17/50 ,  G06T17/00

Abstract: A system and method for simulating activity of a fluid in a volume that represents a physical space, the activity of the fluid in the volume being simulated so as to model movement of elements within the volume. The method includes at a first time, identifying a first set of vortices in a transient and turbulent flow. The method includes at a second time that is subsequent to the first time, identifying a second set of vortices. The method includes tracking changes in the vortices by comparing the first set and the second set of discrete vortices. The method includes identifying one or more noise sources based on the tracking. The method includes determining the contribution of one or more noise sources at a receiver. The method also includes outputting data indicating one or more modifications to one or more geometric features of a device or an entity.

Abstract translation: 用于模拟体积中表示物理空间的流体的活动的系统和方法，模拟体积中的流体的活动以模拟体积内的元素的移动。 该方法在第一时间包括识别瞬态和湍流中的第一组漩涡。 该方法在第一时间之后的第二时间包括识别第二组漩涡。 该方法包括通过比较第一组离散涡旋和第二组离散涡旋来跟踪涡旋中的变化。 该方法包括基于跟踪识别一个或多个噪声源。 该方法包括确定接收机处的一个或多个噪声源的贡献。 该方法还包括输出指示对设备或实体的一个或多个几何特征的一个或多个修改的数据。

公开(公告)号：WO2017112581A1

公开(公告)日：2017-06-29

申请号：PCT/US2016/067496

申请日：2016-12-19

Applicant: EXA CORPORATION

Inventor： DUNCAN, Brad ,  SHESTOPALOV, Andrea

IPC: G06F17/50 ,  G06F17/16

CPC classification number: G06F17/5095 ,  G06F17/5009 ,  G06F2217/08

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing data in a data processing system to identify candidate modifications to physical features of a mechanical device. One of the methods includes converting a representation of the mechanical device into a representation of surface elements. The method includes that based on the representation of the surface elements, computing an effect to evaluation criteria of each of a design variable. The method includes converting the design variables and the computed effect into component vectors. The method includes computing a composite design vector for the evaluation criteria using the component vectors, with the composite design vector comprising a combination of design variable settings to improve the evaluation criteria, and specifying a vector in a design variable space. The method also includes generating a physical modification specification for the mechanical device based on the composite design vector.

Abstract translation: 包括编码在计算机存储介质上的计算机程序的方法，系统和装置，用于处理数据处理系统中的数据以识别对机械装置的物理特征的候选修改。 其中一种方法包括将机械装置的表示转换为表面元素的表示。 该方法包括基于表面元素的表示，计算对每个设计变量的评估标准的影响。 该方法包括将设计变量和计算的效果转换成分量向量。 该方法包括使用分量向量计算用于评估标准的复合设计向量，其中复合设计向量包括设计变量设置的组合以改进评估标准并且在设计变量空间中指定向量。 该方法还包括基于复合设计矢量生成机械装置的物理修改规范。

公开(公告)号：WO2014077969A1

公开(公告)日：2014-05-22

申请号：PCT/US2013/063241

申请日：2013-10-03

Applicant: EXA CORPORATION

Inventor： CHEN, Hudong ,  KOTAPATI, Rupesh ,  ZHANG, Raoyang ,  SHOCK, Richard ,  STAROSELSKY, Ilya ,  LI, Yanbing

IPC: G06G7/50

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

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. This description relates to computer simulation of physical processes, such as fluid flow and acoustics. This description also relates to a method for predicting the phenomena of laminar-to-turbulent transition in boundary layers.

Abstract translation: 一种用计算机实现的使用晶格玻尔兹曼（LB）方法模拟流体流动的方法，其包括基于流体流动是层流还是湍流来为每个面（例如，每冲程）分配壁剪切应力的值 在此描述。 该描述涉及物理过程的计算机模拟，例如流体流动和声学。 该描述还涉及用于预测边界层中层状湍流过渡现象的方法。

公开(公告)号：WO2013070434A1

公开(公告)日：2013-05-16

申请号：PCT/US2012/061682

申请日：2012-10-24

Applicant: EXA CORPORATION

Inventor： CHENGHAI, Sun ,  PEROT, Franck Leon ,  ZHANG, Raoyang ,  CHEN, Hudong ,  FREED, David M. ,  STAROSELSKY, Ilya

IPC: G06G7/57

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 is described herein.

Abstract translation: 本文描述了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。

公开(公告)号：WO2008021652A3

公开(公告)日：2008-02-21

申请号：PCT/US2007/073868

申请日：2007-07-19

Applicant: EXA CORPORATION ,  SHAN, Xiaowen ,  CHEN, Hudong ,  ZHANG, Raoyang

Inventor： SHAN, Xiaowen ,  CHEN, Hudong ,  ZHANG, Raoyang

IPC: G06G7/48

Abstract: Simulating a physical process [Fig. 3, item 302] includes storing, in a computer-accessible memory, state vectors for voxels, where the state vectors correspond to a model and include entries that correspond to particular momentum states of possible momentum states at a voxel. Interaction operations are performed on the state vectors. The interaction operations model interactions between elements of different momentum states according to the model. Move operations performed on the state vectors reflect movement of elements t new voxels according to the model [Fig. 3, items 310, 314; Fig. 13, items 1318, 1338, 1340]. The model is adapted to simulate a high-Knudsen number flow that has a Knudsen number greater than O. 1.

公开(公告)号：WO1995034041A1

公开(公告)日：1995-12-14

申请号：PCT/US1995007411

申请日：1995-06-07

Applicant: EXA CORPORATION

Inventor： EXA CORPORATION ,  TRAUB, Kenneth, R. ,  KNIGHT, Thomas, Frederick, Jr. ,  MOLVIG, Kim ,  TEIXEIRA, Christopher, M.

IPC: G06F19/00

CPC classification number: G06F17/5018 ,  G06F2217/10 ,  G06F2217/16

Abstract: A computer implemented method for simulating a physical process (100). The method includes storing in a memory a state vector for each of a number of voxels (106). Each state vector includes a plurality of integers, each of which corresponds to a particular momentum state of a number of possible momentum states at a voxel and represents the number of elements having the particular momentum state. Each integer has more than two possible values. The method also includes performing interaction operations on the state vectors that model interactions between elements of different momentum states (120-134), performing viscosity modification operations on the state vectors to change the viscosity of the simulated physical process (136-148), and performing move operations on the state vectors that reflect movement of elements to new voxels (114).

Abstract translation: 一种用于模拟物理过程（100）的计算机实现的方法。 该方法包括在存储器中存储多个体素（106）中的每一个的状态向量。 每个状态向量包括多个整数，每个整数对应于体素上的若干可能动量状态的特定动量状态，并且表示具有特定动量状态的元素的数量。 每个整数有两个以上的可能值。 该方法还包括对状态向量执行交互操作，所述状态矢量模拟不同动量状态的元素之间的相互作用（120-134），对状态矢量执行粘度修正操作以改变模拟物理过程（136-148）的粘度;以及 对反映元素向新体素的移动的状态向量执行移动操作（114）。