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 69 for “"simulation code"”.
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Improvement and validation of a thermodynamic S.I. engine simulation code
… of a thermodynamic spark ignition engine simulation code developed in Leeds. Experimental validation data were generated using a central ignition, disc-shaped combustion chamber variant of a ported single-cylinder research engine with full-bore overhead optical access. These data included …
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Digital plasma control system and Alcasim simulation code for Alcator C-Mod
… while running open loop and closed loop simulations. The powerful block-diagram language of Simulink allows to easily update the various components of the feedback loop, should the need arise. Preliminary results from the simulations of real shots are presented and discussed.
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Force Field Development With Gomc A Fast New Monte Carlo Molecular Simulation Code
… fast, flexible, and free molecular Monte Carlo code for the simulation atomistic chemical systems is presented. The results of a large Lennard-Jonesium simulation in the Gibbs ensemble is presented. Force fields developed using the code are also presented. To fit the models a quantitative …
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Improvements to a fully kinetic Hall thruster simulation code and characterization of the cylindrical cusped field thruster
… kg satellites. In first part, a fully kinetic simulation code developed at the MIT Space Propulsion Laboratory (SPL) is described and applied to two devices of interest: the Princeton Cylindrical Hall Thruster (CHT) and the MIT DCFT (Diverging Cusped-Field Thruster). During this simulation …
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A study of parasitic cellular frequency reuse
… building. In addition, this thesis describes the simulation code written which models a growing cellular system for the purpose of analyzing the effect that a growing cellular system will have on in-building frequency reuse. Future in-building frequency reuse is predicted in three month intervals …
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Blackbox Stencil Interpolation Method for model reduction
… reduction often requires modifications to the simulation code. In many circumstances, developing and maintaining these modifications can be cumbersome. Non-intrusive methods that do not require modification to the source code are often preferred. This thesis proposed a new formulation of …
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Simulating Nonlinear Neutrino Oscillations on Next-Generation Many-Core Architectures
In this work an astrophysical simulation code, XFLAT, is developed to study neutrino oscillations in supernovae. XFLAT is a hybrid modular code which was designed to utilize multiple levels of parallelism through MPI, OpenMP, and SIMD instructions (vectorization). It can run on both the CPU and the …
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Tuning complex computer codes to data and optimal designs
… researchers often use complex computer simulation codes for theoretical investigations. We model the response of computer simulation code as the realization of a stochastic process. This approach, design and analysis of computer experiments (DACE), provides a statistical basis for …
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Topologie und Entstehung von Blattspitzenwirbeln in transsonischen Verdichterrotoren und ihr Einfluss auf die Stabilitätsgrenze
… flow conditions. The experiment based on flow simulations at different wheel speeds for one blade passage with periodic boundaries incorporating a fully gridded tip gap. The flow calculations are preformed with a commercial simulation code solving the fully three-dimensional Reynolds-averaged …
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HI Lightcones for LADUMA using Gadget-3 : performance profiling and application of an HPC code
… of the high performance cosmological code, GADGET-3. This code was used to develop a synthetic field-of-view, or lightcone, for the MeerKAT telescope to replicate what it will observe when it conducts the LADUMA ultra-deep HI survey. This lightcone will assist in the planning process …
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Resolving the Mysteries of Highly Irradiated Planets: Observations and Simulations
… then present my work on radiation-hydrodynamics simulations of atmospheres subject to intense high energy radiation, for which I have developed a new simulation code with a unique purpose.
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Fatigue behavior of ceramic matrix composites at elevated temperatures under cyclic loading
… strength and life, obtained using a performance simulation code. Initial results indicate existence of a threshold stress value which limits the use of the material system.
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A computational and experimental study of spark ignition engine combustion
… a thermodynamic spark ignition engine combustion code which could operate in either a three-zone entrainment and bum up, or a two-zone direct combustion, configuration. The pent-roof engine was skip-fired to ensure residual gases were purged and care was taken to ensure that the thermodynamic …
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Analysis of Quasi-Optical Components for Far-Infrared Astronomy
… of these components was done through computer simulations and experimentation. There were a number of techniques used to model the horns. These techniques were implemented in NUI Maynooth's in-house simulation code 'Scatter' and a commercial software package known as CST. They were used to …
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Oppenheimer-Snyder Collapse in the BSSN Formalism
… such as stars. Early numerical relativity simulations demonstrated that a rotating ball of dust collapses into a Kerr black hole. In this thesis, we formulate the collapse of a slowly rotating dust-ball using the BSSN framework from numerical relativity, with the aim of reproducing this …
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Design, simulation, and analysis of reconfigurable antennas in GHz regime
… from the same materials. An industry standard simulation code is used for simulation and analysis. It is expected that each antenna design can be used for specific applications. The first antenna design is optimized for radiation. It has the same resonant frequency in each switching state, an …
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GPU-Optimized Molecular Dynamics Simulations
… performance optimization techniques for MD simulations, including 1) a new Verlet-type neighbor list algorithm that is readily implemented using the CUDPP library and 2) data type compression scheme, as well as standard GPU-optimization techniques such as parallel random number generator and …
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Detecting Extrasolar Planets using IFS-based Simultaneous Differential Imaging
… efficiency of such a technique, we developed a simulation code able to test the capabilities of this IFS-SDI technique for different kinds of planets and telescopes, modelling the atmospheric and instrumental noise sources. The procedure adopted to simulate IFS observations is presented here in …
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High Lundquist Number Simulations of Parker's Model of Coronal Heating: Scaling and Current Sheet Statistics Using Heterogeneous Computing Architectures
… to 3D using high resolution MHD numerical simulations. Random photospheric footpoint motion is applied for a time much longer than the correlation time of the motion to obtain converged average coronal heating rates. Simulations are done for different values of the Lundquist number to …
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Optimal Control of a Reactive Stagnation Point Flow on a Catalytic Plate
… software package has been developed based on the simulation code DIFRUN and the optimal control package OCPRSQP. This new code provides us for the first time with a software tool for the optimal control of a reactive stagnation point flow on a catalytic plate for different chemical processes. Only …
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