Search Results for "lagrangian"
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Showing 19 open source projects for "lagrangian"
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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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GRAMPC
A gradient-based augmented Lagrangian framework for embedded NMPC
GRAMPC is a nonlinear MPC framework that is suitable for dynamical systems with sampling times in the (sub)millisecond range and that allows for an efficient implementation on embedded hardware. The algorithm is based on an augmented Lagrangian formulation with a tailored gradient method for the inner minimization problem. GRAMPC is implemented in plain C with an additional interface to C++ and MATLAB/Simulink. The basic structure and usage of GRAMPC are described in the documentation... -
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MAFOR
The Multicomponent Aerosol Formation model
The MAFOR (Multicomponent Aerosol FORmation) model is a Lagrangian type sectional aerosol box model which includes gas phase and aqueous phase chemistry in addition to aerosol dynamics. MAFOR consistently solves the time evolution of the particle number and mass concentration distribution of a multicomponent aerosol using the fixed sectional method and simultaneously the time-dependent concentrations of chemical compounds in the gas phase and also in the aqueous phase of supermicron droplets... -
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Puff is an atmospheric dispersion model using a lagrangian particle-tracking method, used primarily for simulating volcanic ash cloud trajectories.
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Lagrangian Dynamics NF Sims
Articulated-body simulation engine written in C
Articulated-body simulation engine written in C: based on the Lagrangian Dynamics, even if on a modified flavour of it, I deviced to make it more friendly in the context of numerical simulations. The overall simulation procedure (de facto a full 3D, an articulated-body simulaiton engine) is called: "Lagrangian Dynamics' New Flavour Simulations". It is delivered through sample-simulators relying on it. The modified falvour of the Lagrangian Dynamics here proposed is also a bit simpler... -
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swe2d
Matlab 2D Shallow Water Solver
This is a set of matlab codes to solve the depth-averaged shallow water equations following the method of Casulli (1990) in which the free-surface is solved with the theta method and momentum advection is computed with the Eulerian-Lagrangian method (ELM). The free-surface equation is computed with the conjugate-gradient algorithm. Casulli, V. (1990) Semi-implicit finite difference methods for the two-dimensional shallow water equations, J. Comp. Phys., 86 (1), 56-74. -
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Libraries for integration of atmospheric trajectories. Includes a basic trajectory integrator, contour advection codes and semi-Lagrangian tracer simulations.
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ParisSimulator
PArallel Robust Interface Simulator combines VOF and Front-Tracking
Paris, or ParisSimulator, is a PArallel Robust Interface Simulator. It combines VOF and Front-Tracking to create simulations of interfacial fluid flow, such as droplet bubbles or waves. It computes complex flows such as fast atomizing jets and has a Lagrangian particle option. -
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Nonlocal and Gradient Elasticity
Assessment of high order one-dimensional approximation schemes
These Matlab scripts illustrate the numerical solution of two one-dimensional tensile rods equipped with integro-differential and strain-gradient constitutive laws by means of classical Hermitian and Lagrangian finite element discretizations, B-spline finite element discretizations and C∞ generalized finite element discretizations. Reference M. Malagù, E. Benvenuti, C. A. Duarte, and A. Simone. One-dimensional nonlocal and gradient elasticity: Assessment of high order approximation schemes... -
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Handles Hexahedral, Tetrahedral, Quadrilateral, and Triangle meshes. Lagrangian, Hierarchic, and Monomial finite elements. Interface to PETSc solvers, adaptive mesh refinement, and extreme portablility.
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Lagrange Rally 3D
3D vehicle simulator based on Lagrangian dynamics to simulate dynamics
3D vehicle simulator in which vechicle's configuration as a whole (articulated body) , is represented by a 'vector' of generalised coordinates. so concepts like usual position and orientation of main body and wheels is all defined by the generalised coordinates.Using Lagrangian dynamics, theese coordinates are evolving in time in a realistic manner according to F=ma but as if there were also all constraint forces concretasing the presence of joints: hinge, prismatic, rigid connection, etc. all... -
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lagrange_simulation_mechanics
simulations with Lagrangian method,both symbolic and by numeric deriv
alleged to the video 'tutorial' "the Mechanics and its Simulation". Simulation with Lagrangian method, both symbolic, and by numerical derivation. All well-grouped in folders. there is also a 'review' in 3 demos of the Newtonian dynamics: mass-spring systems. most of progs are written in C, with use of SDL lib to display simple graphics and have real-time interactivity. As to programming complexity, it's very simple... this all aims at classical physics simulation in a simple but efficient way... -
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This matlab package, SADoRe, accompanied by the paper Q. Zhang 2012 CMAME ``Highly Accurate Lagrangian Flux Calculation via Algebraic Quadratures on Spline-Approximated Donating Regions,'' is for donating region construction and Lagrangian flux computation in two-dimensional space. This package depends on the SplineGauss package by Sommariva and M. Vianello, following the following steps to use SADoRe: (1) Download SplineGauss from http://www.math.unipd.it...
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Lagrange_Motocross
2D motorcycle simulator done using Lagrangian equations of motion
2D simulation game using exlusively Lagrangian equations of motion. It's a 2D motocross game similar to X-Moto, ActionSupercross and such. Some stability issues persist but mostly it's good already. I shall compile it soon for Windows: one of the problems is that Windows compilers must periodically be reinstalled, and that's annoying. Using Lagrangians in games is not a well documented thing, but it allows to achieve exellent results in very little time, soon after a good parametrization... -
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igabem
Isogeometric boundary element analysis with matlab
This code holds all the matlab files necessary to run a 2D isogeometric code for elastostatic analysis. For more guidance, it is probably a good idea to have a look through the code repository, and more recent updates to the code may also be present here. The main idea is that instead of using conventional Lagrangian polynomials to discretise the unknown fields and geometry (using the isoparametric concept), the basis functions that are used in Computer Aided Design (CAD) are used instead... -
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CTruck 2D is a 2D, oldstyle, physically realistic 2D truck game. Predecessor of the CTruck3D vehicle simulator series. I wrote it from zero in C (+OpenGL&GLUT). It has ascii-art and nice graphics version, and a special funny version It's a very basic thing: there are free rigid bodies and springs with strong attenuation/damping. It's very simple and very short code, and collisions of bodies with ground are good and stable. A good simulation of this kind, however requires Lagrangian...
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The polymer model called FENE is simulated in a Lagrangian frame of reference in various flow types such as turbulent flow, laminar shear flow, etc. A Qt-based GUI is created in this project to animate the dynamics.
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pflexible
A python tool for data analysis of FLEXPART transport modeling.
This software is being created to work with FLEXPART and other atmospheric transport model ouput. FLEXPART is a Lagrangian particle dispersion model written by Andreas Stohl. It is in active development at NILU and by Sabine Eckhardt, John Burkhart and numerous other research groups worldwide. For more information on FLEXPART visit the homepage Contact A maillist has been set up for users at sourceforge. Please direct inquiries via the pflexible_maillist Direct inquiries may be sent...
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