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Quantifying sensitivity of local site response models to statistical variations in soil properties
Local site response Sensitivity analysis Statistical variation Stochastic analysis
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2015/7/1
We perform a combined stochastic-deterministic analysis of local site response using two computer codes, an equivalent linear analysis program SHAKE and a fully nonlinear finite element code SPECTRA. ...
Particle drift in turbulent flows: the influence of local structure and inhomogeneity
turbulent structures particle dispersion drift PDF approach
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2012/5/31
The way particles interact with turbulent structures, particularly in regions of high vorticity and strain rate, has been investigated in simulations of homogeneous turbulence and in simple flows whic...
Gas Dynamic Theory of Local Quasigravity
Gas Dynamic Theory Local Quasigravity Fluid Dynamics
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2012/5/31
In the present work there was found a class of noninertial frames of reference, which satisfy Einstein "equivalency" principle more than the known noninertial frames - these are strongly swirling gase...
Statistics of the Energy Dissipation Rate and Local Enstrophy in Turbulent Channel Flow
Turbulent channel flows, turbulent shear flows, energy dissipation rate, enstrophy
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2011/9/6
Using high-resolution direct numerical simulations, the height and Reynolds number dependence of higher-order statistics of the energy dissipation rate and local enstrophy are examined in incompressib...
Local and nonlocal pressure Hessian effects in real and synthetic fluid turbulence
Local and nonlocal pressure Hessian effects real and synthetic fluid turbulence
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2011/8/29
The Lagrangian dynamics of the velocity gradient tensor A in isotropic and homogeneous turbulence depend on the joint action of the self-streching term and the pressure Hessian. Existing closures for ...
On the local extension of Killing vectorfields in Ricci flat manifolds
Killing vectorfields Ricci flat manifolds
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2014/4/3
In this paper, written in collaboration with A. Ionescu, we revisit the extension problem for Killing vector-fields in smooth Ricci flat Lorentzian manifolds and its relevance to the black hole rigidi...
Local boundary conditions with a high-resolution numerical scheme for non-oscillatory shock absorption and reflection
boundary conditions shock capturing high resolution schemes
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2010/3/12
In this work we examine some simple non-oscillatory boundary conditions that can be applied to a typical class of modern ¯nite-di®erence shock capturing schemes. In particular we concentrate ...
An Eulerian-Lagrangian Approach for Incompressible Fluids: Local Theory
Euler equations blow up
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2014/4/4
We study a formulation of the incompressible Euler equations in terms of the inverse Lagrangian map. In this formulation the equations become a rst order advective nonlinear system of partial di erent...