公开(公告)号：US20210115935A1

公开(公告)日：2021-04-22

申请号：US16829247

申请日：2020-03-25

Applicant: Dassault Systemes Simulia Corp.

Inventor： Huhu Wang ,  Edward Dean Tate, JR. ,  Karthik Mahadevan Muthuraman, JR. ,  Satheesh Kandasamy

IPC: F04D27/00 ,  F04D19/00

Abstract: Described are computer-related techniques for determining rotation direction of an axial fan for use in fluid flow simulations. The techniques involve receiving by a computer processing system digital data of a three dimensional representation of an axial fan having plural fan blade, determining by the computer processing system from the data of three dimensional representation of the axial fan, at least a single centerline of a single blade of the axial fan from a two dimensional projection of the axial fan, and calculating by the computer processing system based on the initial valve of fan rotation, an actual value of fan rotational direction.

公开(公告)号：US20210081512A1

公开(公告)日：2021-03-18

申请号：US16573729

申请日：2019-09-17

Applicant: Dassault Systemes Simulia Corp.

Inventor： Anand Naryayan Pathak ,  Yangwook Choi ,  Rajesh Dadaji Nagose

IPC: G06F17/50 ,  G06T17/20

Abstract: A computer-aided design system includes a display device, a memory storing a plurality of response surface models, and a processor configured to: (a) display a graphical user interface that includes a model of a vehicle frame; (b) display a section configuration panel that includes one or more section dimension values for one or more section dimensions of a first section member of the plurality of section members; (c) retrieve a first response surface model based on values of the one or more section dimensions for the first section member; (d) determine one or more predicted values associated with the first section member based on the values of the section dimensions, the predicted values include one or more predicted crash resistances for the section member; and (e) display the predicted values, thereby allowing the user to evaluate the predicted values for suitability in vehicle design.

公开(公告)号：US10915675B2

公开(公告)日：2021-02-09

申请号：US15661726

申请日：2017-07-27

Applicant: Dassault Systemes Simulia Corp.

Inventor： Claus Bech Wittendorf Pedersen ,  Victor George Oancea

IPC: G06F30/20 ,  G06F30/23 ,  G06F111/10 ,  G06F119/18

Abstract: An example embodiment designs a real-world object by defining a first model of the object being produced using an additive manufacturing (AM) process, where behavior of the object being produced is given by a first equation which includes a first plurality of corresponding sensitivity equations for a first plurality of design variables. Similarly, such an embodiment defines a second model of the object after being produced, wherein behavior of the object after being produced is given by a second equation which includes a second plurality of corresponding sensitivity equations for a second plurality of design variables. In turn, the second model is iteratively optimized with respect to a given one of the second plurality of design variables using both the first plurality of corresponding sensitivity equations and the second plurality of corresponding sensitivity equations.

公开(公告)号：US10831952B2

公开(公告)日：2020-11-10

申请号：US16299460

申请日：2019-03-12

Applicant: Dassault Systemes Simulia Corp.

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

IPC: G06F17/50 ,  G06F30/23 ,  G06F119/10

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing data representing the effect of tortuosity on the acoustic behavior of a fluid in a porous medium. One of the methods includes generating by a first data processing program of the data processing apparatus, a model of acoustic behavior of a fluid in a porous medium including an effect of tortuosity, with the model comprising a time variable indicative of a sound speed of the fluid. The method includes rescaling the time variable of the model based on the sound speed in a fluid in the porous medium. The method also includes simulating the acoustic behavior including the effect of tortuosity of the porous medium based on the rescaling of the time-related variables within the model.

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：US10515159B2

公开(公告)日：2019-12-24

申请号：US14069691

申请日：2013-11-01

Applicant: Dassault Systemes Simulia Corp.

Inventor： Franck Léon Pérot ,  Adrien Mann ,  David M. Freed

IPC: G06F17/50

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.

公开(公告)号：US10386212B2

公开(公告)日：2019-08-20

申请号：US15189609

申请日：2016-06-22

Applicant: Dassault Systemes Simulia Corp.

Inventor： Adrien Mann ,  Franck Léon Pérot

IPC: G01F1/32 ,  G06F17/50 ,  G10K11/16

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.

公开(公告)号：US10354026B2

公开(公告)日：2019-07-16

申请号：US15044454

申请日：2016-02-16

Applicant: Dassault Systemes Simulia Corp.

Inventor： Edward Dean Tate, Jr.

IPC: G06F7/60 ,  G06F17/10 ,  G06F17/50 ,  G06F17/11

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, the 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 of the convex and non-convex parameters.

公开(公告)号：US10338117B2

公开(公告)日：2019-07-02

申请号：US14826000

申请日：2015-08-13

Applicant: Dassault Systemes Simulia Corp. ,  Paul G. Bremner

Inventor： Robin Stewart Langley

IPC: G06F7/60 ,  G06F17/10 ,  G01R23/16 ,  G01V3/165 ,  G01R29/08 ,  G06F17/50 ,  G01N27/02 ,  G01R13/02 ,  G01R21/133 ,  G06F17/18

Abstract: Methods and systems are provided for determining the surface electromagnetic impedance of a conductive element and applying the diffuse field reciprocity principle using that surface electromagnetic impedance to determine electric fields induced in the conductive element. An exemplary method involves determining a surface electromagnetic impedance matrix for the conductive element based on its physical dimensions and an excitation frequency for an incident electromagnetic wavefield, applying diffuse field reciprocity to determine a metric indicative of an induced field based on the surface electromagnetic impedance matrix and an energy metric for the incident electromagnetic wavefield, and displaying a graphical representation of the metric on a display device.