Effective removal and transport of water in the flow channel of a proton exchange membrane (PEM) fuel cell (PEMFC) is significantly important to the critical water management in PEMFCs. In this study, the process of water removal and transport is investigated numerically by using the...

The power coefficient of a turbine increases according to the predictions from streamtube theory for sites with a confined fluid flow. Here, a vertical axis turbine (optimized for free flow) has been simulated by a two-dimensional vortex method, both in a channel and in free flow. The first part...

Manning’s roughness coefficient (n) has been widely used in the estimation of flood discharges or depths of flow in natural channels. Therefore, the selection of appropriate Manning’s n values is of paramount importance for hydraulic engineers and hydrologists and requires considerable...

Adaptive neuro-fuzzy inference system (ANFIS) is considered for flow over trapezoidal labyrinth side weirs located on a straight channel as a substantial part of distribution channels in irrigation systems and treatment units. To estimate the outflow over a trapezoidal labyrinth side weir, the...

The discharge coefficient of a trapezoidal labyrinth side weir is a function of the Froude number <Emphasis FontCategory="SansSerif">F <Subscript>1</Subscript>, the dimensionless effective crest length L/ℓ, the dimensionless weir length L/B, the dimensionless weir height p/h <Subscript>1</Subscript>, and the sidewall angle α. A labyrinth weir is an overflow weir, folded...</subscript></subscript></emphasis>

Present paper is performed to investigate the heat and exergy transfer characteristics of forced convection flow through a horizontal rectangular channel where open-cell metal foams of different pore densities such as 10, 20 and 30PPI (per pore inches) were situated. All of the bounding walls of...

A literature review of recent research on two-phase flow in micro-channels is provided in this article. Researches on the micro-hydrodynamics concerned with two-phase gas-liquid adiabatic flow characteristics in both circular and non-circular micro-channels are discussed. This review aims to...

Purpose – The objective of this study is to develop a model for analyzing the relative importance of facilitating and constraining factors that determine changes in the structure of distribution channels as a country progresses along the path of economic development....