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Kim Molvig Phones & Addresses

  • Brighton, MA

Business Records

Name / Title
Company / Classification
Phones & Addresses
Kim Molvig
Owner
Kim Molvig Consulting
It/Business Consulting
1200 Monument St, West Concord, MA 01742
Kim Molvig
President
SIMLAB, INC
1200 Monument St, Concord, MA 01742

Publications

Us Patents

Viscosity Reduction In Physical Process Simulation

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US Patent:
5606517, Feb 25, 1997
Filed:
Jun 8, 1994
Appl. No.:
8/255409
Inventors:
Kenneth R. Traub - Watertown MA
Thomas F. Knight - Belmont MA
Kim Molvig - Concord MA
Christopher M. Teixeira - Cambridge MA
Assignee:
Exa Corporation - Cambridge MA
International Classification:
G06F 1900
US Classification:
364578
Abstract:
A computer implemented method for simulating a physical process. The method includes storing in a memory a state vector for each of a number of voxels. 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, performing viscosity modification operations on the state vectors to change the viscosity of the simulated physical process, and performing move operations on the state vectors that reflect movement of elements to new voxels.

Particle Interaction Processing System

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US Patent:
5377129, Dec 27, 1994
Filed:
Mar 12, 1993
Appl. No.:
8/030573
Inventors:
Kim Molvig - Reading MA
Gregory M. Papadopoulos - Burlington MA
Assignee:
Massachusetts Institute of Technology - Cambridge MA
International Classification:
G06F 1560
US Classification:
364378
Abstract:
Fluid flow is simulated by a massively parallel data processor having combinational logic for processing collision rules at lattice sites. Following collision processing, particle representations are moved to different sites dependent on direction and velocity of the particles. The collision rules are based on collisions of particles positioned at sites of a three-dimensional lattice. Particle representations identify particles of plural energy levels, and the collision rules allow for transfer of energy between particles. Particle representations relate to particles which move along four-dimensional face-centered hypercube lattices which project to the three-dimensional lattice. The lattice may include interfacing grids of different unit dimensions depending on the resolution required in individual volumes of space.

Computer System For Simulating Physical Processes Using Multiple-Integer State Vectors

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US Patent:
5594671, Jan 14, 1997
Filed:
Dec 10, 1993
Appl. No.:
8/165293
Inventors:
Hudong Chen - Waltham MA
Peter C. Churchill - Boxboro MA
Robert A. Iannucci - Lexington MA
Kim Molvig - Reading MA
Gregory Papadopoulos - Acton MA
Stephen A. Remondi - Reading MA
Christopher M. Teixeira - Cambridge MA
Kenneth R. Traub - Watertown MA
Assignee:
Exa Corporation - Cambridge MA
International Classification:
G06F 1900
US Classification:
364578
Abstract:
A computer implemented method for simulating a physical process. The method includes storing in a memory a state vector for each of a number of voxels (i. e. , lattice sites). 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 (lattice site) 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 and performing move operations on the state vectors that reflect movement of elements to new voxels.

Particle Interaction Processing System

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US Patent:
5432718, Jul 11, 1995
Filed:
Aug 16, 1994
Appl. No.:
8/291414
Inventors:
Kim Molvig - Reading MA
Gregory M. Papadopoulos - Burlington MA
Assignee:
Massachusetts Institute of Technology - Cambridge MA
International Classification:
G06F 1900
US Classification:
364578
Abstract:
Fluid flow is simulated by a massively parallel data processor having combinational logic for processing collision rules at lattice sites. Following collision processing, particle representations are moved to different sites dependent on direction and velocity of the particles. The collision rules are based on collisions of particles positioned at sites of a three-dimensional lattice. Particle representations identify particles of plural energy levels, and the collision rules allow for transfer of energy between particles. Particle representations relate to particles which move along four-dimensional face-centered hypercube lattices which project to the three-dimensional lattice. The lattice may include interfacing grids of different unit dimensions depending on the resolution required in individual volumes of space.

Computer Simulation Of Physical Processes

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US Patent:
5953239, Sep 14, 1999
Filed:
Dec 29, 1997
Appl. No.:
8/998768
Inventors:
Christopher M. Teixeira - Cambridge MA
Hudong Chen - Newton MA
Kim Molvig - Concord MA
Assignee:
Exa Corporation - Lexington MA
International Classification:
G06F 1900
US Classification:
364578
Abstract:
A physical process is simulated by storing in a memory state vectors for voxels. The state vectors include entries that correspond to particular momentum states of possible momentum states at a voxel. Iinteraction operations are performed on the state vectors. The interaction operations model interactions between elements of different momentum states. For a particular state vector, the interaction operations include performing energy-exchanging interaction operations that model interactions between elements of different momentum states that represent different energy levels. A rate factor for the voxel represented by the particular state vector affects a degree to which energy-exchanging interaction operations cause a transfer of elements from states representing lower energy levels to states representing higher energy levels, rather than from states representing higher energy levels to states representing lower energy levels. Move operations then are performed on the state vectors to reflect movement of elements to new voxels. The rate factor is generated for a voxel based on rate factors for voxels from which elements of the voxel moved.

Collision Operators In Physical Process Simulation

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US Patent:
5640335, Jun 17, 1997
Filed:
Mar 23, 1995
Appl. No.:
8/409685
Inventors:
Kim Molvig - Concord MA
Christopher M. Teixeira - Cambridge MA
Kenneth R. Traub - Watertown MA
Assignee:
EXA Corporation - Cambridge MA
International Classification:
G06F 1710
G06F 1900
US Classification:
364578
Abstract:
A computer implemented method for simulating a physical process. The method includes storing in a memory a state vector for each of a number of voxels. 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 that model interactions between elements of different momentum states and include interaction rules that operate on a subset of the integers of a state vector. The interaction rules comprise a collision operator that transfers between integers representing a first set of momentum states and integers representing a second set of momentum states a number of elements that is determined based on the number of elements in the first and second sets of momentum states. Finally, the method includes performing move operations on the state vectors that reflect movement of elements to new voxels.

Computer Simulation Of Physical Processes

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US Patent:
5910902, Jun 8, 1999
Filed:
Mar 28, 1997
Appl. No.:
8/829448
Inventors:
Kim Molvig - Concord MA
Hudong Chen - Newton MA
Christopher M. Teixeira - Cambridge MA
Stephen Remondi - Reading MA
David Lawrence Hill - Somerville MA
Fongyan Gang - San Diego CA
Ales Alajbegovic - Plymouth MI
James E. Hoch - Harvard MA
Assignee:
Exa Corporation - Lexington MA
International Classification:
G06F 1550
US Classification:
364578
Abstract:
A physical process is simulated by storing in a memory state vectors for voxels and a representation of at least one surface. The state vectors include entries that correspond to particular momentum states of set of possible momentum states at a voxel. Interaction operations are performed on the state vectors to model interactions between elements of different momentum states. In addition, surface interaction operations are performed on the representation of the surface. The surface interaction operations model interactions between the surface and elements of at least one voxel near the surface. The elements have a tangential momentum relative to the surface, and the surface interaction operations retain at least a portion of the tangential momentum of the elements. The portion of tangential momentum retained corresponds to a friction parameter. The friction parameter is varied based on changes in pressure near the surface.

Computer System For Simulating Physical Processes

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US Patent:
5848260, Dec 8, 1998
Filed:
Dec 1, 1995
Appl. No.:
8/566032
Inventors:
Hudong Chen - Waltham MA
David Lawerence Hill - Somerville MA
James Hoch - Harvard MA
Kim Molvig - Concord MA
Christopher M. Teixeira - Cambridge MA
Kenneth R. Traub - Watertown MA
Assignee:
Exa Corporation - Lexington MA
International Classification:
G06F 1900
G06F 1560
US Classification:
395500
Abstract:
To simulate physical processes, state vectors for each of multiple voxels are stored in a memory along with a representation for each of multiple facets that are sized and oriented independently of the size and orientation of the voxels and, in combination, represent one or more surfaces. Each state vector includes multiple entries, each of which corresponds to a number of elements at a particular momentum state of multiple possible momentum states at a voxel. Interaction operations that model interactions between elements of different momentum states are performed on the state vectors, and surface interaction operations that model interactions between a facet and elements at one or more voxels near the facet are performed on the representations of facets. Finally, move operations that reflect movement of elements to new voxels are performed on the state vectors.
Kim Molvig from Brighton, MA Get Report