Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 58 for “"Eulerian-Lagrangian"”.
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Eulerian-Lagrangian stereo-to-multi-view Conversion
… One key contribution lies in combining Lagrangian and Eulerian approaches. This allows us to leverage their complementary advantages. The method achieves real-time performance on current GPUs. Its design also enables an easy hardware implementation, demonstrated using a …
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Hybrid Eulerian/Lagrangian 3D methods for high Reynolds number reactive flows
… jet flows through the design of a hybrid Eulerian/Lagrangian and massively parallel 3D numerical simulation tool. The adaptivity of the resulting software yields truly fast and accurate simulations, and a better understanding of the simulated combustion processes. The transverse jet …
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Interfacing hydrodynamic and water quality models with the Eulerian-Lagrangian method
… efficiency, accuracy and flexibility. An Eulerian-Lagrangian type of transport model is proposed for interfacing due to its superior simulation efficiency and numerical resolution in advection dominant flows. Comparisons are made between Eulerian models and Eulerian-Lagrangian models …
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An Eulerian-Lagrangian finite element method for modeling crack growth in creeping materials
… growth in history-dependent materials. The mixed Eulerian-Lagrangian description (ELD) kinematic model is shown to have several desirable properties for modeling inelastic crack growth. Accordingly, a variational statement based on the ELD for history-dependent materials is developed and a new …
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Simulation of contaminant transport in groundwater systems using Eulerian-Lagrangian localized adjoint methods
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1990.
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A coupled Eulerian/Lagrangian method for the solution of three-dimensional vortical flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Solution of advection-dominated transport by Eulerian-Lagrangian methods using the backwards method of characteristics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1987.
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3-D hybrid Eulerian-Lagrangian / particle tracking model for simulating mass transport in coastal water bodies
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1992.
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Investigations of cloud altering effects of atmospheric aerosols using a new mixed Eulerian-Lagrangian aerosol model
… soot / sulfate aerosols. We describe the Mixed Eulerian-Lagrangian Aerosol Model (MELAM). This new computer model of aerosol microphysics is specifically tailored to simulate condensation and activation as accurately as possible. It specifically calculates aerosol thermodynamics, condensation, …
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A Mixed Eulerian-Lagrangian Model for the Analysis of Dynamic Fracture (Finite Element Method, Moving Mesh, Virtual Energy Release Rate)
… brittle fracture problems based on a mixed Eulerian-Lagrangian kinematic model. Effective finite element computational methods based on the continuum formulations are also described.
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Multi-scale particle transport modeling: Kinetic high-fidelity DSMC approaches and system-scale Eulerian-Lagrangian simulations for high-speed flows
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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High order stochastic transport and Lagrangian data assimilation
… matter, etc.). Understanding such uncertain Lagrangian transport is imperative for reducing environmental damage due to natural hazards and for allowing rigorous risk analysis and effective search and rescue. While secondary variables and trajectories have classically been used for the …
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Numerical study of nonlinear free-surface flows
… studied. A numerical scheme employing a mixed Eulerian-Lagrangian approach and involving time stepping is used to simulate the flow. At each time step, the boundary value problem is solved using the Complex Boundary Element Method. The numerical performance of the method is studied by …
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Numerical investigation of airflow and aerosol deposition characteristics within human airways
… upper human airways. LES is performed using the Eulerian-Lagrangian framework where the airflow is modeled using the Eulerian formulation, and the aerosol evolution is tracked in a Lagrangian manner under the dilute suspension conditions using a one-way coupled approach. First, computational …
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Strongly orthotropic continuum mechanics
… even very simple problems and its use of not the Eulerian, Lagrangian but the Intrinsic Frame generates previously unreported results in strongly orthotropic continua.
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Unstructured grid simulations of shocks and detonations in two-phase flows
… to this solver to allow simulations of both Eulerian-Eulerian treatment and Eulerian-Lagrangian treatment. Both methods were used to study one-dimensional shock wave attenuation in two-phase flow containing gas and particles. The results show good agreement with experiment for both methods. …
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A coupled DEM/CFD analysis of die filling process
… die filling in a vacuum and in air using an Eulerian-Lagrangian model, which employs a Discrete Element Method (DEM) for the particles and Computational Fluid Dynamics (CFD) for the air with a two-way air-particle interaction coupling term. The effects of air and particle properties (size, …
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High Order Explicit Semi-Lagrangian Method for the Solution of Lagrangian Transport and Stochastic Differential Equations
<p>A semi-Lagrangian method is developed for the solution of Lagrangian transport equations and stochastic differential equations that is consistent with Discontinuous Spectral Element Method (DSEM) approximations of Eulerian conservation laws. The method extends the favorable properties of DSEM …
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Numerical Simulation of a Cryogenic Spray
… performed over cryogenic nitrogen spray using an Eulerian-Lagrangian approach. In other words, while the gas phase of the flow is treated as a continuum, the nitrogen droplets are tracked individually in a Lagrangian sense. Models for evaporation, atomization, and breakups capture the physical …
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Viscoelastic Fluid Modeling for Geophysical Applications in an Eulerian Framework
… in geophysical viscoelastic modeling often favor Lagrangian or mixed Eulerian--Lagrangian frameworks, which can provide high physical fidelity at the cost of increased computational complexity. In this work, we develop viscoelastic models within a fully Eulerian framework, derived from continuum …
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