公开(公告)号：US20170199950A1

公开(公告)日：2017-07-13

申请号：US14994943

申请日：2016-01-13

Applicant: Exa Corporation

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

IPC: G06F17/50 ,  G06F17/18

CPC classification number: G06F17/5018 ,  G06F2217/82

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：US20190108296A1

公开(公告)日：2019-04-11

申请号：US15729216

申请日：2017-10-10

Applicant: Exa Corporation

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

IPC: G06F17/50

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.

公开(公告)号：US20140257772A1

公开(公告)日：2014-09-11

申请号：US14069691

申请日：2013-11-01

Applicant: Exa Corporation

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

IPC: G06F17/50

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.

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。

公开(公告)号：US10262087B2

公开(公告)日：2019-04-16

申请号：US14994943

申请日：2016-01-13

Applicant: Exa Corporation

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

IPC: G06F17/50

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：US20170370751A1

公开(公告)日：2017-12-28

申请号：US15189609

申请日：2016-06-22

Applicant: Exa Corporation

Inventor： Adrien Mann ,  Franck Léon Pérot

IPC: G01F1/32

CPC classification number: G01F1/3209 ,  G06F17/5018 ,  G06F17/5095 ,  G10K11/16 ,  Y02T90/50

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.