On Boundary Conditions for Damage Openings in RoPax-Ship Survivability Computations

Numerically Nonreflecting Boundary Conditions for Multidimensional Aeroacoustic Computations

Many compressible ow and aeroacoustic computations rely on accurate nonre ecting or radiation boundary conditions. When the equations and boundary conditions are discretized using a nitedi erence scheme, the dispersive nature of the discretized equations can lead to spurious numerical reections not seen in the continuous boundary value problem. These re ections can lead to poor convergence to a...

Microcontroller Survivability in Space Conditions

The impact of scaled boundary conditions on wall shear stress computations in atherosclerotic human coronary bifurcations.

The aim of this study was to determine if reliable patient-specific wall shear stress (WSS) can be computed when diameter-based scaling laws are used to impose the boundary conditions for computational fluid dynamics. This study focused on mildly diseased human coronary bifurcations since they are predilection sites for atherosclerosis. Eight patients scheduled for percutaneous coronary interve...

Study of Damage in Beams with Different Boundary Conditions

In this paper the damage in clamped-free, clampedclamped and free-free beam are analyzed considering samples without and with structural modifications. The damage location is investigated by the use of the bispectrum and wavelet analysis. The mathematical models are obtained using 2D elasticity theory and the Finite Element Method (FEM). The numerical and experimental data are approximated usin...

Efficient and Robust Design for Absorbing Boundary Conditions in Atomistic Computations

We propose an efficient and robust way to design absorbing boundary conditions in atomistic computations. An optimal discrete boundary condition is obtained by minimizing a functional of reflection coefficient integral over a range of wave numbers. The minimization is performed with respect to a set of wave numbers, at which transparent absorption is reached. Compared with the optimization with...