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 660 for “"numerical modeling"”.
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Numerical modeling of suspension flows
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1999.
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Numerical modeling of wetland hydrodynamics
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Numerical Modeling of Ultrasound Wave Propagation.
North Carolina State University Theses Mechanical and Aerospace Engineering.
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Numerical Modeling of Blast-Induced Liquefaction
… The simulation procedure involved the modeling of a three-dimensional half-space soil region with pre-defined, embedded, and strategically located explosive charges to be detonated at specific time intervals. LS-DYNA, a commercially available finite element hydrocode, was the solver …
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Numerical Modeling of Air Amplifier Assisted Electrospray.
North Carolina State University Theses Aerospace Engineering.
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3-D Numerical Modeling of Turbidity Currents
… and the transport and deposition of sediment. Numerical modeling of turbidity currents can provide valuable insights into current dynamics including turbulence structures and their ef- fects on deposit thickness, grain size, and distribution pattern. Proper modeling of turbulence in these …
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Numerical modeling of electron cyclotron resonance plasma
The semiconductor industry is introducing electron cyclotron resonance (ECR) plasma reactors as reliable wafer etching tools. This industry requires radially uniform etching rate and radially uniform etching anisotropy. The etching rate and etching anisotropy depend on the ECR plasma properties.
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Numerical modeling of microstrip circuits and antennas
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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LHD vibrations analysis and numerical modeling during operations
… focused on developing valid analytical and numerical models for determining the vibration propagation in LHDs. Also, this research pioneered the development and analysis of comprehensive dynamic virtual models of LHDs with detailed vibration analysis of the operator-seat interface. The …
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Numerical Modeling of Turbulent Combustion and Flame Spread
… to address several important aspects of numerical modeling of turbulent combustion and flame spread. The developed models include a pyrolysis model for charring and non-charring solid materials, a fast narrow band radiation property evaluation model (FASTNB) and a turbulence model for …
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Numerical modeling study on meandering and cutoff dynamics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Numerical modeling of methane venting from lake sediments
… by changes in hydrostatic load. The mechanistic, numerical model is tuned to and compared against ebullition data from Upper Mystic Lake, MA, and the predictions match the daily temporal character of the observed gas releases. We conclude that the combination of plastic gas cavity deformation and …
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Fully kinetic numerical modeling of a plasma thruster
… with conductive acceleration channel walls was numerically modeled using 2D3V Particle-in-Cell (PIC) and Monte-Carlo Collision (MCC) methodolo- gies. Electron, ion, and neutral dynamics were treated kinetically on the electron time scale to study transport, instabilities, and the electron energy …
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Numerical Modeling of Air Cushion Vehicle Flexible Seals
… that affect performance is through high fidelity numerical simulation. As previous numerical efforts have employed separate iterative partitioned solvers, or have implemented simplified physics, the approaches have been complex, computationally expensive, or of limited utility. This research …
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Numerical Modeling and Prediction of Bubbling Fluidized Beds
Numerical modeling and prediction techniques are used to determine pressure drop, minimum fluidization velocity and segregation for bubbling fluidized beds. The computational fluid dynamics (CFD) code Multiphase Flow with Interphase eXchange (MFIX) is used to study a two-stage reactor geometry with …
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Numerical modeling of seismic wave propagation in underground mines.
… propagation in deep underground mines. Advanced numerical modeling tools are used and new modeling techniques are developed to attain this goal. In this thesis, research is emphasized on the ground motion around excavations due to seismic wave propagation that results from a fault-slip seismic …
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Numerical modeling of incompressible flow applied to casting processes
… even in small numbers, a reliable and predictive numerical simulation is an inevitable part of the production chain. The simulation program CASTS is based on finite element (FE) approximations. Recently a hybrid approach was developed combining the mathematics of finite elements with the technical …
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