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Showing 1 to 20 of 75 for “"integral method"”.
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Simulation of Turbulent Flows Using Nodal Integral Method
… with those obtained using the pseudo spectral method. The comparison shows good agreement and also shows that results obtained with similar grid sizes and time steps match very well with those obtained using pseudo spectral method. New results are obtained for k = 2, and the heteroclinic cycles …
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Electromagnetic simulations in frequency and time domain using adaptive integral method
The subject of this thesis is to investigate methods to improve the performance of the adaptive integral method (AIM) for effective large scale simulations in both the frequency and the time domain. This is achieved by reducing the storage requirements, decreasing the amount of computational loads …
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Boundary Integral Method for Interfacial Potential Flows in Unbounded Axi-Symmetric Domains
While the objective is to explore alternative damage mechanisms due to ultrasound, the work is not restricted as such. Indeed, the work is concerned with surface tension driven singularities at fluid interface in general. Within this study, different regimes are found and the conditions which …
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A Nodal Integral Method for the Numerical Solution of Incompressible Fluid Flow Problems
Made available in DSpace on 2017-07-06T18:42:22Z (GMT). No. of bitstreams: 3 Azmy_Yousry_Y_MS.pdf: 71149259 bytes, checksum: 025ba55714c962cfa9e12dffaa34f6c3 (MD5) Azmy_Yousry_Y_MS_ABS.pdf: 1014174 bytes, checksum: 6591ff54de5c8eea46b8eddff712c7cc (MD5) license.txt: 4813 bytes, checksum: …
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Atomistic quantum dynamics: implementation and applications of the quantum-classical path integral method
… a number of mixed quantum-classical methods have been proposed, beginning with averaged-force approaches in the earliest days of quantum theory and continuing through many new variations and improvements. Unfortunately, owing to the differences between quantum and classical mechanics, …
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An integral method for quasi three-dimensional boundary layer analysis with rotational effects
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Spectral Integral Method and Spectral Element Method Domain Decomposition Method for Electromagnetic Field Analysis
<p>In this work, we proposed a spectral integral method (SIM)-spectral element method (SEM)- finite element method (FEM) domain decomposition method (DDM) for solving inhomogeneous multi-scale problems. The proposed SIM-SEM-FEM domain decomposition algorithm can efficiently handle problems with …
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An integral method for solving the boundary-layer equations for a second-order viscoelastic liquid
… to describe the velocity function, the momentum integral equation for a second-order fluid is used to develop differential equations describing the boundary-layer for second-order flow past external surfaces. Using the momentum integral equation and appropriate boundary conditions, results are …
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Solving transport-density equation with diffusion using the first integral method and the generalized hyperbolic functions method
… traffic flow model. Basically, the first integral method (FIM) and the generalized hyperbolic functions method (GHFM) are employed to solve the proposed model and to give compelling evidence that regularization of the conservation law by adding viscosity that will undeniably remove the …
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A Modified Nodal Integral Method for the Time -Dependent, Incompressible Navier -Stokes Equations and Its Parallel Implementation
A parallel version of the modified nodal integral method is also developed for the two-dimensional Navier-Stokes equations with Drichlet boundary conditions. Good speedup is obtained for up to four processors for the modified lid driven cavity problem with exact solution.
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A Higher -Order Finite Element: Boundary Integral Method for Electromagnetic Scattering and Radiation From Bodies of Revolution
The hybrid finite element - boundary integral method (FE-BI) is used to compute the radar cross section (RCS) and radiated fields of bodies of revolution (BOR). This is a 2.5-D problem since it allows simulations in a 2-D domain to correspond to a full 3-D object. The interior region, which …
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Development of a discrete numerical approach to the Fredholm Integral Method for evaluating microwave scattering by irregular hydrometeors
A new approach to the implementation of Fredholm Integral Method (FIM) was developed to evaluate microwave scattering by irregular hydrometeors in the melting layer where snowflakes aggregate. These contain air, ice and liquid water and therefore complex to model. In this study, the particles were …
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Modified nodal integral method for Navier-Stokes equations incorporated with generic quadrilateral elements, and GPU-based parallel computing
… and solution of the modified nodal integral method (MNIM), developed earlier for rectangular domains, on graphics processing units (GPUs). Nodal methods have become the backbone and workhorse of the core design production codes used in the nuclear industry for decades. As a variation …
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The Patch Integral Method (PIM), a New Heat Transfer Analysis Tool for Hypersonic Wind Tunnel Facilities at NASA Langley
… such as Artemis and LOFTID. The data acquisition method used in these tunnels is thermography, primarily phosphor and infrared. Image data are not collected during model injection, resulting in a data gap in the time-history of temperature. Historically, an approximate method has been used to …
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Modified nodal integral method for non-linear coupled neutronics-heat conduction problems and exact solutions based on method of manufactured solutions
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Efficient Formulation of the Modified Nodal Integral Method and Development of Implicit, Explicit, and Multigrid Schemes Applied to the Two-Dimensional Burgers' Equation
Made available in DSpace on 2017-07-06T18:59:25Z (GMT). No. of bitstreams: 3 Wescott_Bradley_L_MS.pdf: 37261682 bytes, checksum: 07a50e858d2c887376e024b00579ea4e (MD5) Wescott_Bradley_L_MS_ABS.pdf: 705169 bytes, checksum: e042a4f022fb6236e683141b34fd34c1 (MD5) license.txt: 4813 bytes, checksum: …
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Chebyshev spectral method for incompressible viscous flow with boundary layer control via suction or blowing
… design/analysis code implements a two-equation integral method with empirical closure relations to solve the boundary layer flow problem with or without suction, but lacks the option of flow control via blowing. The integral method is parameterized with the shape parameter H _ 6*/0 which cannot …
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Bandwidth enhancement techniques for low-profile antennas: Theory and experiment
… enhancement for low-profile antennas. The first method involves the use of coupled resonators. In particular, two cavity-backed slot antennas are coupled through an aperture in a common wall. One cavity-backed slot antenna, of the coupled antenna system, is driven. This coupled antenna system is …
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Convective mass transport for viscous flow past an evolving boundary
"A Boundary Integral-Spectral Element method is developed that solves two-dimensional Helmholtz equations. This high order technique is shown to be adaptable to a variety of boundary conditions and solves elliptic partial differential equations efficiently such that it is applicable to moving …
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Mathematical modelling of unsteady contact melting
… solutions are constructed using the heat balance integral method.
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