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 8 of 8 for “"Non-reflecting Boundary"”.
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A numerical analysis of 3-D inviscid stator/rotor interactions using non-reflecting boundary conditions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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A Perfectly Matched Layer Method for the Navier-Stokes equations
… found widespread application as a high-accuracy, non-reflecting boundary treatment in many wave propagation simulations. However, in the area of computational fluid dynamics, its application has been mostly limited to the linearized Euler equations. Attempts to apply PML to the nonlinear Euler …
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A Hybrid Framework of CFD Numerical Methods and its Application to the Simulation of Underwater Explosions
… Level Set, Direct Ghost Fluid and Embedded Boundary methods. Computational fluid dynamics (CFD) solvers are developed using this framework of algorithms to demonstrate the computational methods and their ability to effectively and efficiently solve UNDEX problems. Contributions, made in the …
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Large-eddy simulation of turbulent wall-pressure fluctuations using the finite element method
… flow throughout the simulation domain. The non-reflecting boundary conditions with a sponge layer are applied at the top and exit of the computational domain to remove unwanted reflections from the boundary. In order to examine the present inflow generation method and the ability to capture …
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Aeroacoustic computation of sound radiation from ducts
… A study into the determination of a suitable non-reflecting boundary condition for duct acoustics is also undertaken. Using a novel formulation of the linearised Euler equations, the solver is applied to noise radiation from a realistic engine intake geometry with background mean flow. The …
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A Runge Kutta Discontinuous Galerkin-Direct Ghost Fluid (RKDG-DGF) Method to Near-field Early-time Underwater Explosion (UNDEX) Simulations
… flows with cavitation, spurious waves reflecting from boundaries and fluid-structure coupling. Existing methods and codes are not able to simultaneously consider all of these characteristics. A robust numerical method that is capable of treating large displacements, capturing shocks, …
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Unsteady aerodynamics using high-order methods
… Aeroacoustics (CAA) numerical schemes, non-reflecting boundary conditions and DES constituted a state of the art approach to the simulation of unsteady compressible flow phenomena at low Mach numbers. In the numerical study of 2D cavities, a number of cases with different length-to depth …
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Defect characterization in concrete elements using vibration analysis and imaging
… infrastructure promotes the need for reliable non-destructive evaluation (NDE) and structural health monitoring (SHM) methods for existing concrete structures. The conventional impact-echo (IE) test, which utilizes contact type sensors, is an efficient NDE method that is used to identify and …