Shape Evolution of Electrodeposited Copper Bumps with High Peclet Numbers

Diffusion-advection in cellular flows with large Peclet numbers

evolution of shape in late islamic seals

shape is regarded as one of outward characteristics of islamic seals. this characteristic, which is part of common traits of all different areas of seal studies, could be defined as framework of circumference of seals impression on written materials and documents, which in fact results from the shape of seals surfaces. shape has been considered as one of the ways of recognizing the administrati...

Rigorous Upscaling of the Reactive Flow through a Pore, under Dominant Peclet and Damkohler Numbers

In this paper we present a rigorous derivation of the effective model for enhanced diffusion through a narrow and long 2D pore. The analysis uses a singular perturbation technique. The starting point is a local pore scale model describing the transport by convection and diffusion of a reactive solute. The solute particles undergo a first-order reaction at the pore surface. The transport and rea...

Reversal Trend of Hounsfield Unit Values of Substances with High and Low Effective Atomic Numbers

Introduction: In dual-energy computed tomography (DECT), the Hounsfield values of a substance measured at two different energies are the basic data for finding the chemical properties of a substance. The trends of Hounsfield unit (HU) alterations following the changes in energy are different between the materials with high and low Zeff. The present study aim...

A hybrid Laplace transform finite analytic method for solving transport problems with large Peclet and Courant numbers

In this study, the authors develop a hybrid Laplace transform finite analytic method (LTFAM) to solve the advection–dispersion equations with large Peclet and Courant numbers. The finite analytic method with a hybrid Laplace transform can incorporate the temporal variable into the numerical scheme and effectively control the numerical dispersion and oscillation at solute sharp fronts. Since the...