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Showing 1 to 20 of 272 for “"Numerical techniques"”.
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Numerical techniques for computational aeroacoustics
… Aeroacoustics approach which is based on direct numerical simulation of the sound field. In the region of sound generation, the unsteady airflow is computed separately from the sound using Computational Fluid Dynamics (CFD) codes. Overlapping this region and extending further away is the acoustic …
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Analytical and numerical techniques for wave scattering
… of applications in the aerospace industry. The techniques considered in the present work can be broadly classed into two categories: analytically based methods which use special transforms and functions to provide a near-complete mathematical description of the scattering process, and numerical …
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Feynman-Kac Numerical Techniques for Stochastic Optimal Control
… advancements are proposed for improving numerical methods in the solution of forward-backward stochastic differential equations (FBSDEs) appearing in the Feynman-Kac representation of the value function in stochastic optimal control (SOC) problems. First, we propose a novel …
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Numerical Techniques for the Automated Design of Metasurface Antennas
L'abstract è presente nell'allegato / the abstract is in the attachment
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Recent numerical techniques for differential equations arising in fluid flow problems
… is the application of the recently introduced numerical techniques, namely the spectral quasi-linearization method (SQLM) and the bivariate spectral quasi-linearization method (BSQLM), in solving problems arising in fluid flow. Firstly, we use the SQLM to solve the highly non-linear one …
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A Study of Radiofrequency Cardiac Ablation Using Analytical and Numerical Techniques
… predicting tissue temperature distributions by numerical solution of the bioheat equation. This thesis describes the development of an analytical solution to serve as a benchmark for subsequent numerical solutions. The solution, which was obtained using integral transforms, has the form of a …
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Numerical techniques for electromagnetic applications in microelectronic and radar imaging systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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The fracture toughness of silica fume concrete using experimental and numerical techniques
… the present study experimental and numerical techniques were employed to investigate the mechanical and fracture characteristics of CSF concrete wet cured at 20° C and 50° C.<br/>Whereas the high temperature curing resulted in increased compressive strength at early age, the …
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Material Characterization and Numerical Techniques for Accurate Prediction of Snow-Tire Interactions
… these challenges by developing advanced numerical simulations for snow-tire interactions. In this study, a systematic approach was established to characterize compacted snow with a density of 500 kg/m³. Material parameters for the Drucker-Prager Cap (DPC) plasticity model were derived …
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Analytical and Numerical Techniques for the Optimal Design of Mineral Separation Circuits
The design of mineral processing circuits is a complex, open-ended process. While several tools and methodologies are available, extensive data collection accompanied with trial-and-error simulation are often the predominant technical measures utilized throughout the process. Unfortunately, this …
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The Application of Improved Numerical Techniques to 1-D Micellar/Polymer Flooding Simulation
Three examples of three phase flow models which have been developed are compared under various conditions. Although the dif-ference in oil recovery and surfactant trapping among the models was rather large with constant. salinity, a salinity gradient produced high oil recovery and low surfactant …
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Further numerical techniques for planar elastostatic analysis by the boundary integral equation method
… the Finite Element Method, are highlighted. The numerical implementation of the method, using constant, linear and quadratic interpolation functions over the boundary segments is developed and then inclusion in computer programs is discussed. Attention is given to the problem of numerical …
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Numerical Techniques for the Noninvasive Assessment of Material Properties and Stresses in Soft Biomaterials
… traditional mechanical testing or finite element techniques. Therefore, the objective of this thesis was to develop computational methods incorporating imaging-based measures of deformation, composition, and local microstructure to permit nondestructive analysis of a range of complex biomechanical …
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The Synergism of Analytic and Numerical Techniques in General Relativity: Calculation of Radiative Spacetimes
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988.
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Optimization of transducers for active structural acoustic control of complex structures using numerical techniques
… element models with non-linear optimization techniques. The optimization procedure was used to perform parametric studies of Active Structural Acoustic Control (ASAC) on a simply supported plate with various discontinuities such as point mass, line mass, and spring mass systems. These system …
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Numerical techniques to compute the cutoff frequencies, modal fields, and dispersion characteristics in microwave planar media
Numerical techniques for calculating modal fields, cutoff frequencies, and dispersion characteristics in shielded microwave planar transmission media are developed. The formulation uses the method of images to derive a Fourier series expression for the current on the inner conductor, a …
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Development and application of Lattice Boltzmann and accurate volume of fluid numerical techniques on graphics processing units
… and applications of two computational techniques for high density ratio two-phase flow as encountered in air conditioning and refrigeration equipment. In this research work, we have examined mesoscopic and macroscopic approaches of CFD modeling for multiphase calculations. We have …
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