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Showing 1 to 20 of 137 for “"Numerical calculations"”.
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Numerical calculations for electronic transport through molecular systems
Thema der vorliegenden Arbeit ist die Beschreibung von Ladungstransporteigenschaften molekularer Systeme, wenn diese das Verbindungsstück zweier Elektroden bilden. Einen technologischen Meilenstein setzte auf diesem Gebiet die Rastertunnelmikroskopie, welche ursprünglich für die Abbildung von …
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Numerical calculations for flows past an unconventional airfoil
… incompressible turbulent flows around airfoils. Numerical solutions have been obtained by solving the steady-state Reynolds-averaged Navier-Stokes equations in primitive variable form. The standard k-$\varepsilon$ turbulence model was employed and a compression turbulence model was also …
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Numerical calculations of the decay rate of a false vacuum for a modified quartic potential
… false vacua increases. We find that neither our numerical calculation of a modified quartic potential, nor the method of "Pseudo-Bounce", provide a reliable path for the calculation of the decay rate of the false vacuum. If −λϕ⁴ is only an effective potential for small values of ϕ, our numerical …
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A Study of Solidification With a Rotating Magnetic Field
We then simulate the experiments using the numerical model. The numerical model predicts macrosegregation effects similar to those observed in the experiments. The temperature traces obtained from experiments and predicted by the numerical calculations also agree very well. We extend the numerical …
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The Blast Waves From Unconfined Axisymmetric Vapour-Cloud Explosions
… i.e. peak overpressure and impluse, using the numerical calculations for various cloud geometries and flame velocities. A general acoustic monopole source theory was also used in determining the peak overpressure and impulse produced by the low velocity deflagration of non-spherical …
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Study of phonon-dislocation interaction in LiF and KCl crystals
… of phonons still have long mean-free-paths. Numerical calculations for the mean-free-paths assuming dynamic scattering processes and including phonon focusing effects are in fair agreement with experiments made at low temperatures. Our thermal conductivity measurements on KCl crystals …
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Mathematical modelling of active nematic liquid crystals in confined regions
… regions. We use a mixture of analytical and numerical calculations to examine the energies of non-trivial nematic equilibria which exchange stabilities with constant equilibria at critical anchoring strengths. For the remainder of the thesis, we consider active nematic liquid crystals in …
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Laser induced epitaxy of Ni and Co silicides
… epitaxial monosilicide was also achieved. Numerical calculations based on a heat flow approach gave fair quantitative agreement with experiment.
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Physical Concepts of Copolymerization of Microtubules in the Presence of Anti-mitotic Agents
… system is investigated and analyzed through the numerical calculations.
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Alfven-Rossby Waves in Rotating Magnetized Stars
… the coupling coefficients analytically. Through numerical calculations, we found that even a weak magnetic field can greatly enhance the couplings between modes. We also found and explained the existence of very long-period quasi-periodic oscillations.
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Hydrodynamic interaction of passing ships in a shallow asymmetric canal
… is ideal and wave making effects are ignored. Numerical calculations for several passing cases show good agreement with existing model test results.
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Shear instabilities in stellar objects: linear stability and non-linear evolution
… the inevitable small-scale dynamics via numerical calculations. In particular a thin region with strong shear at the base of the convection zone in the Sun, the tachocline, is believed to play an important role in the Sun's interior dynamics and magnetic field generation. Velocity …
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Messungen und Rechnungen zu strukturmechanischen Fragen im Alignmentsystem von ATLAS und DATCHA
… 15% showed up. <br>This may aggravate precise numerical calculations or <br>optimization of carbon fiber bar's properties.
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INFORMATION TRANSFER EFFICIENCY OF X-RAY IMAGE INTENSIFIER-BASED IMAGING SYSTEMS.
… layer thickness on DQE are measured in detail. Numerical calculations based on a physical model of x-ray interactions show a general agreement with the experimental data. At higher frequencies, the DQE behavior becomes more complicated. A mathematical model which combines the micro-image …
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The Madden-Julian oscillation and nonlinear moisture modes
… surface heat flux exceed the MSE export. Numerical calculations of a single-column model under the WTG configuration show that a realistic convective scheme can reproduce moisture mode instability. Sensitivity tests on the strength of moisture-convection feedback in the Emanuel scheme …
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Applications of Hodograph Transformation to Hydrodynamic Problems Influenced by Gravitation
… can be solved in the hodograph plane through numerical calculations. The velocity function of free streamlines must be determined through iterations and it has been also found that this iterative process is rapidly convergent. Favorable agreement of the results with the experimental data …
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Anharmonic Helmholtz free energy to O(lambdaâ ´) in the non- leading term approximation /|nby Leslie Wilk. -- 260 St. Catharines, Ont. : [s. n.],
… every atom is on a site of inversion symmetry. Numerical calculations have been carried out in the high temperature limit and in the non-leading term approximation for a monatomic facecentred cubic crystal with nearest neighbour c entralforce interactions. The numbers obtained were seen to vary …
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Variable Viscosity Thermal Convection at Infinite Prandtl Number in a Thick Spherical Shell
… method applied to the spherical elements. Numerically convergent solutions can be obtained when specially tailored matrix dependent transfer is introduced in the multigrid method and line Jacobi relaxation is applied in the radial direction of the shell. The conjugate gradient method is …
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Magic Trapping of a Three-Level System for Rydberg Quantum Computation
… this decoherence may be completely removed. Numerical calculations show that, while the commonly used alkalis cannot be trapped with this scheme, a "magic" trap could be built for aluminum.
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One-dimensional hydrogen atom
… structures, and the results are compared to numerical calculations. It is found that the external electric field can be used to manipulate, control, and design specific atomic structures. These resonant structures are nearly one-dimensional and whose electronic distributions are highly …
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