Search Results for "dynamics" - Page 3
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Showing 459 open source projects for "dynamics"
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tsfresh
Automatic extraction of relevant features from time series
...Further, they can be used to build models that perform classification/regression tasks on the time series. Often the features give new insights into time series and their dynamics. -
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verl
Volcano Engine Reinforcement Learning for LLMs
...Data pipelines treat human feedback, simulated environments, and synthetic preferences as interchangeable sources, which helps with rapid experimentation. VERL is meant for both research and production hardening: logging, checkpointing, and evaluation suites are built in so you can track learning dynamics and regressions over time. -
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Surya
Implementation of the Surya Foundation Model for Heliophysics
Surya is an open‑source, AI‑based foundation model for heliophysics developed collaboratively by NASA (via the IMPACT AI team) and IBM. Named after the Sanskrit word for “sun,” Surya is trained on nine years of high‑resolution solar imagery from NASA’s Solar Dynamics Observatory (SDO). It is designed to forecast solar phenomena—such as flares, solar wind, irradiance, and active region behavior—by predicting future solar images with a sophisticated long–short vision transformer architecture, thereby enabling improved space weather forecasting. Foresees solar flares, wind, EUV spectra, and active region formation in advance. ... -
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OpenFOAM
The Open Source CFD Toolbox
OpenFOAM - The Open Source CFD Toolbox. OpenFOAM is a generic, programmable software tool for Computational Fluid Dynamics (CFD). For more information, see: - Main Website: https://openfoam.org - C++ Source Documentation: https://cpp.openfoam.org - Issue (Bug) Tracking: https://bugs.openfoam.org - User Guide: https://cfd.direct/openfoam/user-guide -
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foam-extend
Open Source CFD Toolbox
The foam-extend project is a fork of the OpenFOAM® open source library for Computational Fluid Dynamics (CFD). The goal of this project is to integrate community contributions to the foam-extend CFD simulation toolbox. It is an open project welcoming and integrating contributions from all users and developers. -
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Flexe
The open source federated learning for vehicular network simulation
Flexe is a FL simulator designed for connected and autonomous vehicles (CAVs). It enables horizontal/vertical/transfer FL schemes and simulates realistic wireless and vehicular dynamics. Separate Python client (PyFlexe) available. -
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The goal of this project is to open the OpenFOAM CFD toolbox to community contributed extensions. Visit https://sourceforge.net/p/openfoam-extend/wiki/Home/ for more information. OPENFOAM(R) is a registered trademark of OpenCFD Limited.
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Beampath
Beam dynamics simulations in linear accelerators and beamlines
BEAMPATH is a 2D and 3D code for simulation of space charge dominated beam dynamics in linear particle accelerators and beam transport. The program is used for particle-in-cell simulation of axial-symmetric, quadrupole-symmetric and z-uniform beams in a channel containing RF gaps, radio-frequency quadrupoles, multipole lenses, solenoids, bending magnets, accelerating waveguides. Detailed description of model can be found in Y.K.Batygin, “Particle-in-cell code BEAMPATH for beam dynamics simulations in linear accelerators and beamlines” Nuclear Instruments and Methods in Physics Research A 539 (2005) 455–489. -
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QMCF2
Quantum Mechanical Charge Field - Molecular Dynamics
The Quantum Mechanical Charge Field - Molecular Dynamics package in it's second (improved) version. Developed at the University of Innsbruck, Austria. -
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snntorch
Deep and online learning with spiking neural networks in Python
...This allows researchers to train spiking neural models using familiar deep learning workflows while taking advantage of GPU acceleration and automatic differentiation. snnTorch provides implementations of common spiking neuron models, surrogate gradient training methods, and utilities for handling temporal neural dynamics. Because spiking neural networks operate over time and encode information through spike timing, the library includes tools for simulating temporal behavior. -
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Chemical Trajectory Analyzer
A software package for processing and analyzing chemical trajectories
ChemTraYzer creates reaction models from molecular dynamics simulations. It's available as open software (MIT license). Please find a full description @ https://www.ltt.rwth-aachen.de/cms/LTT/Forschung/Forschung-am-LTT/Model-Based-Fuel-Design/Aktuelle-Projekte/~kqbf/ChemTraYzer/lidx/1 M.Döntgen, M.-D.Przybylski-Freund, L.C.Kröger, W.A.Kopp, A.E.Ismail, K.Leonhard, "Automated Discovery of Reaction Pathways, Rate Constants, and Transition States Using Reactive Molecular Dynamics Simulations", J. ... -
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CFDTool - CFD & OpenFOAM GUI Toolbox
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
CFDTool - "CFD Simulation Made Easy" CFDTool is a fluid dynamics toolbox for modeling and simulation of flows with coupled heat transfer. Based on FEATool Multiphysics (https://www.featool.com), CFDTool is specifically designed to make advanced fluid mechanics and heat transfer simulations both easy and enjoyable. - Completely stand-alone and cross-platform self-contained toolbox - Optionally use as MATLAB Add-On toolbox - Fully integrated and easy to use MATLAB GUI - Modeling and simulation in 1D, 2D, 3D, and axisymmetric/swirl/cylindrical coordinate systems - Seamless OpenFOAM GUI and SU2 CFD solver integrations (https://www.featool.com/Easy-to-Use-OpenFOAM-GUI) - Built-in geometry and CAD tools - Automatic mesh and grid generation - Pre-defined equations and boundary conditions for: + Incompressible viscous fluid flows (Navier-Stokes equations) + Compressible, supersonic, trans-sonic, and turbulent flows + Heat conduction with conjugate heat transfer -
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cfMesh
A library for polyhedral mesh generation
cfMesh is an open-source library for volume mesh generation based on OpenFOAM. It implements various meshing workflows for volume mesh generation needed for CFD simulations with OpenFOAM. It is already a part of foam-extend, OpenFOAM for Windows, Caelus and OpenFOAM+ released by ESI. This repository is intended for contribution and collaborative development. If you have a new meshing algorithm or interested in contributing to cfMesh, do not hesitate to contact us. Please note that... -
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Minsky
System dynamics program with additional features for economics
Minsky brings system dynamics and monetary modelling to economics. Models are defined using flowcharts on a drawing canvas (as are Matlab's Simulink, Vensim, Stella, etc). Minsky's unique feature is the "Godley Table", which uses double entry bookkeeping to generate stock-flow consistent models of financial flows. Minsky is good for demonstrating mathematics too, with the most "math-like" interface in system dynamics. -
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The project is an update of the work by the OpenFOAM Turbomachinery Working Group, that was initiated at the Second OpenFOAM Workshop in Zagreb, June 2007. Objectives: * Develop OpenFOAM and FOAM-extend extensions for turbomachinery applications, including pre-processing, solution methods, and post-processing. * Provide tutorials on how to produce accurate results using OpenFOAM and FOAM-extend in turbomachines. * Distribute relevant validation test cases and corresponding OpenFOAM...
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FEATool Multiphysics - FEA & CFD Toolbox
FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
FEATool Multiphysics (https://www.featool.com) is a fully integrated toolbox for computer aided engineering CAE, finite element analysis & fluid dynamics simulations. With a very easy-to-use GUI, anyone is now able to quickly set up and perform large scale dynamical and complex engineering physics simulations, with coupled fluid flow, heat transfer, structural mechanics, chemical transport, and electromagnetics effects, without having to learn complex programming. In addition to built-in CAD and pre/post-processing, automatic mesh generation, and multi-physics solvers, FEATool also seamlessly integrates the state-of-the-art OpenFOAM [1], SU2, and FEniCS CFD and FEA solvers. ... -
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relax
Molecular dynamics by NMR data analysis
The software package 'relax' is designed for the study of molecular dynamics through the analysis of experimental NMR data. Organic molecules, proteins, RNA, DNA, sugars, and other biomolecules are all supported. It supports exponential curve fitting for the calculation of the R1 and R2 relaxation rates, calculation of the NOE, reduced spectral density mapping, the Lipari and Szabo model-free analysis, study of domain motions via the N-state model and frame order dynamics theories using anisotropic NMR parameters such as RDCs and PCSs, the investigation of stereochemistry in dynamic ensembles, and the analysis of relaxation dispersion data. -
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Elmer finite element software
Open source finite element software for multiphysical problems
Elmer is a finite element software for numerical solution of partial differential equations and multiphysical problems. It includes models of structural mechanics, fluid dynamics, heat transfer, electromagnetics etc. Elmer home is www.csc.fi/elmer -
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FFTW++ is a C++ header class for the FFTW Fast Fourier Transform library that automates memory allocation, alignment, planning, wisdom, and communication on both serial and parallel (OpenMP/MPI) architectures. In 2D and 3D, hybrid dealiasing of convolutions substantially reduces memory usage and computation time. Wrappers for C, Python, and Fortran are included.
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42
Simulation for spacecraft attitude control system analysis and design
42 is a comprehensive general-purpose simulation of spacecraft attitude and orbit dynamics. Its primary purpose is to support design and validation of attitude control systems, from concept studies through integration and test. 42 accurately models multi-body spacecraft attitude dynamics (with rigid and/or flexible bodies), and both two-body and three-body orbital flight regimes, modelling environments from low Earth orbit to throughout the solar system. 42 simulates multiple spacecraft concurrently, facilitating studies of rendezvous, proximity operations, and precision formation flying. ... -
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OpenDSS-G
A graphical view of OpenDSS
OpenDSS-G (fomer DSSim-PC) is a new step in the evolution of simulation tools for planning and operations based in OpenDSS. This interface has adopted the functionalities of OpenDSS for making easier to the user to use the advance features of the platform. This version includes the parallel processing features included in OpenDSS. The interface is faster and by using graphical objects and forms the user can describe the power system, configure the processor utilization and many more... -
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VideoCrafter2
Overcoming Data Limitations for High-Quality Video Diffusion Models
...The system is optimized for generating videos from textual descriptions or still images, leveraging advanced diffusion models. VideoCrafter2, an upgraded version, improves on its predecessor by enhancing motion dynamics and concept combinations, especially in low-data scenarios. Users can explore a wide range of creative possibilities, producing cinematic videos that combine artistic styles and real-world scenes. -
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CFD Utilities
CFD-related Fortran libraries and applications
UPDATE: As of March 2023, the CFDTOOLS project has moved its public repository to NASA's official organization on GitHub: https://www.github.com/nasa/cfdtools While this repository will remain available, it will no longer receive updates or be monitored for issues. Please see the link above for latest releases and issue status. ---- The CFD Utility Software Library (previously known as the Aerodynamics Division Software Library at NASA Ames Research Center) contains nearly 30... -
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ransfoil
console to calculate airflow around an airfoil based on RANS approach
RANSFOIL is a console program to calculate airflow field around an isolated airfoil in low-speed, subsonic, transonic or supersonic regime by numerically solving the Reynolds averaged Navier-Stokes (RANS) equations using mature computational fluid dynamics (CFD) method. As postprocess results, the aerodynamic parameters of the airfoil, e.g., lift coefficient and drag coefficient, can be integrated from the airflow distribution near wall boundary. In addition, the coupling between airflow and heat transfer and the effect of surface roughness on near wall flow are considered by this program, it can be used for engineering calculation of the friction drag and heat transfer coefficients on airfoil surface. ... -
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...The individual-level model is extended based on the well-known social force model, and it mainly describes how agents/particles interact with each other, and also with surrounding facilities including obstructions and passageways. Most importantly, we introduce a set of arrays to define social relationship of agents/particles in a quantitative manner. Opinion dynamics is integrated with force-based interaction to study complex social phenomena including path-selection activities, social group and herding effect. Very interestingly, the interaction of such agent/particles are not only at physics-level, but at consciousness and unconsciousness level by integrating advanced social-psychological studies.
