Wave Propagation in a Randomly Layered Medium
The authors briefly outline a problem discussed at length in a paper called Frequency content of randomly scattered signals, by M. Ash, W. Kohler, G. Papanicolaou, M Postel and B. White....
Nonlinear Diffraction of Random Waves by a Vertical Cylinder
In this study, nonlinear diffraction of random waves by a vertical uniform circular cylinder in deep water is analyzed. The incident wave field is represented by a stationary random process,...
A Non-Gaussian Fatigue Model for Offshore Structures
Fatigue damage accumulation in members of offshore structures can be affected by various aspects of the non-Gaussian response stress time history induced by the nonlinear/non-Gaussian...
Probabilistic Rotordynamics Analysis Using an Adaptive Importance Sampling Method
A methodology is developed to compute the probability of instability of a rotor system that can be represented by a system of second-order ordindary linear differential equations. The...
Design of Transient and Steady State Drain Spacing
Drain spacings calculated by steady state or transient equations can be made equal by adjusting the design water table height used in the equations. The adjustments are not constant and...
Frictional Aspect of Rocking-Sliding of a Rigid Block with Surface Impact
During the very short time of impact between a rigid rectangular block and a rigid foundation, the interface pressure distribution varies with time in a complicated manner. Due to this...
Analog Electronic Simulations of a Nonlinear System
We perform electronic analog simulations of a harmonically forced Duffing oscillator. The addition of noise perturbations of sufficient intensity is shown to induce transitions between...
Landslide-Generated Waves in Reservoirs
This paper investigates surge waves generated by landslides in reservoirs. The Navier-Stokes equations with complete viscous conditions at the free surface are solved numerically for the...
Two-Dimensional Flow in Embankments
Lubrication Theory Analysis of the Permeability of Rough-Walled Fractures
Lubrication theory is used to study the permeability of rough-walled rock fractures. Two idealized models of a fracture, in which the roughness follows a sinusoidal or a sawtooth variation,...
Prediction of Runoff-Evapotranspiration to Estimate Leachate Generation in a Landfill
The fraction of precipitation that remains after runoff and surface water evaporation, enters into the solid waste landfill and generates leachate flow at the bottom. A part of the infiltration...
Block-based Solvers for Engineering Applications
This paper compares the performance of standard linear system solvers, LINPACK, widely used in engineering applications, and PARALIN (a block-based package for linear systems) on the Alliant...
Developments in the Use of Cubic B-Splines in the Compound Strip Method
A general cubic B-spline compound strip method (BCSM) has been developed to analyze thin plates, stiffened plates, folded plates, and box-girders. In the BCSM a problem is first partially...
This note summarizes recent progress in developing h-p adaptive finite element methods for the numerical solution of the Navier-Stokes equations. A brief review of the h-p strategies and...
Finite Element Approximation to Heat Transfer Through Construction Glass Blocks
The purpose of this study is to investigate the heat transfer through combined solid and fluid media, taking into account the interaction between the solid and the fluid. The main example...
Explicit Integration Schemes in Structural Dynamics
Based on the recursive explicit form of Newmark γ-β method developed by Zienkiewicz for displacements, similar recursive expressions for velocities and accelerations are developed. General...
Numerical Solutions for Transient and Nearly Periodic Waves in Shallow Water
This paper presents a study of several numerical methods for solving transient (time-dependent) model equations for waves in shallow water by means of the method of lines. The physical...
Stability of Nearly Breaking Long Waves
This paper addresses the development of equations for nonlinear dispersive waves that have improved stability properties over the commonly used Boussinesq-type equations. Boussinesq-type...
The Moving Contact Line
The flow field around the moving contact line, generated by an impulsive, horizontal motion of a vertical plate, is studied numerically. The two-dimensional, unsteady Navier-Stokes equations,...
Interaction of Viscous Free-Surface Flow with Submerged Structure
The fully-transformed unsteady incompressible Navier-Stokes equations are solved numerically in a time-dependent boundary-fitted coordinate system. In addition, the complete viscous free-surface...
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