Erosion caused by sand transportation in flow changing devices is a serious concern in the hydrocarbon and mineral processing industry, which entail to failure and malfunction of flow devices. In this study, computational fluid dynamics (CFD) with discrete phase models (DPM) were employed for analysis of carbon steel long radius 90-Degree elbow erosion due to the sand concentration of 2, 5 and ...

In this paper, the cooling performance of water-cooled heat sinks for heat dissipation from electronic components is investigated numerically. Computational Fluid Dynamics (CFD) simulations are carried out to study the rectangular and circular cross-sectional shaped heat sinks. The sectional geometry of channels affects the flow and heat transfer characteristics of minichannel heat sinks. T...

This paper studies worker flows dynamics in Japan for the period between 1980 and 2009. We construct gross worker flows data from the monthly Labour Force Survey. Our data enables us to examine the size and cyclical patterns of the flows and transition rates between the states of employment, unemployment, and not-in-the labor force. We find that the cyclical pattern of worker flows is similar t...

The goal of this project is to apply system dynamics modeling to a basic instance of the contemporary issue of sustainability. System dynamics modeling is especially well-suited to the topic of sustainability; the flows and stocks involved with this sort of modeling are the keys needed to express the relationships between quantities and to observe their interactions. My project would model an a...

In this paper, I put the ongoing G20 process of improving the regulation of international finance into a historically and theoretically informed perspective. To understand the driving forces behind and obstacles to international cooperation in governing finance I combine concepts from international and comparative political economy. Different variants of capitalism have reacted in distinct ways...

We developed a system dynamics model for a simple, but important stock and flows task where the objective was to control the water level in a tank within an acceptable range of the goal, over a number of time periods, in the presence of an unknown environmental inflow and outflow. We also report how this model accounts for human behavior, using behavioral data we collected from human subjects i...

Organisms often grow, migrate and compete in liquid environments, as well as on solid surfaces. However, relatively little is known about what happens when competing species are mixed and compressed by fluid turbulence. In these lectures we review our recent work on population dynamics and population genetics in compressible velocity fields of one and two dimensions. We discuss why compressible...

The paper concerns the Hamiltonian structure of the finite-dimensional reductions 2D dispersionless Toda hierarchy constrained by the string equation. We derive the Hamiltonian structure of the reduced dynamics and show connections of integrals of “multi-finger” solutions of the Laplacian growth problem with the “Toda–Krichever” flows of the 2dToda hierarchy constrained by a string equation. Th...

Using a two-bloc endogenous growth model calibrated to two generic sending and receiving countries of equal size, we assess the growth and welfare impact of world migration flows of different skill compositions. The sending country (East) has a lower total factor productivity and a lower endowment of skilled labour. Migration can induce two growth-enhancing effects: an efficiency effect from th...