Asian Transactions on Engineering

Volume: 05, Issue: 02, April 2015
ISSN 2221-4267



Title: Fourier Transform and Finite Difference Solutions of MHD Flow and Heat Transfer in A Square Duct with Joule Dissipation
Author(s): Karem Mahmoud Ewis
Paper ID: ATE-15030247
Pages: 1 - 8
Abstract: This study presents the effect of magnetic field on the fully developed Newtonian flow and Entrance heat transfer in a square duct. Double Fourier transform is used to introduce closed forms for velocity, temperature, friction and Nusselt number. The no slip condition and H1 thermal condition with four heated walls are considered. The present analytical solution is compared with special available results. The present analytical results are verified, in all cases, by introducing a finite difference method. The effects of Hartmann number and Brinkman number on the velocity, temperature, the friction factor and Nusselt number are investigated. New results are introduced for relatively high values of Brinkman number.

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Title: A Mini Review On Differences In Solid Waste Generation And Management Scenarios In Two High Income Countries-Saudi Arabia And USA
Author(s): Saleh Faraj Magram
Paper ID: ATE-15040268
Pages: 9 - 12
Abstract: An in-depth review of land area, population and waste generation (both total and per capita) of two high income countries, namely, Saudi Arabia and USA was conducted to assess the critical factors influencing the rate of waste generation and the status of waste management. This is investigated with reference to the above countries by examining the composition of municipal solid waste (MSW) and the methods of waste management employed, including recycling, landfilling, dumping, waste-to-energy, incineration and composting. Due to the increasing population size connected to greater land area, an association between land area and generation of waste may be expected; however land area or the economic status of the country are not the only important factors. In fact, this study points out that critical factors include government and environmental policies, lifestyle and attitudes, the level of development, the amount invested in waste solutions and the priorities of each nation.

Full Text: PDF (213 KB)


Title: DRAINMOD Simulated Impact of Future Climate Change on Agriculture Drainage Systems
Author(s): Ahmed M. Abdelbaki
Paper ID: ATE-15070248
Pages: 13 - 18
Abstract: Agriculture drainage systems are designed to work for a long period. In the future, these systems will work in different climate conditions. A simulation study has been conducted using the widely used hydrological model DRAINMOD and nitrogen model DRAINMOD-NII to assess the potential impacts of future climate change on drained lands in Sweden. Two sets of 49-years climate data were used: measured historic period 1961-2009 and predicted period 2011-2059. Climate models predicted an increase in annual temperature by 1.9oC and a 9% increase in annual precipitation. In response, DRAINMOD predicted a moderate increase in annual evapotranspiration (approximately 10%) and a slight increase in average annual drainage (less than 4%). Over the future 49-years, a 3% reduction in soil organic carbon was predicted because of faster decomposition during warmer winter and spring. The increase in predicted drainage and mineralization of organic nitrogen caused an increase in predicted N drainage losses. The predicted increase in denitrification during the warmer winter and spring improved the performance of controlled drainage for reducing N drainage losses. The model predicted a slight increase in crop yields of winter wheat and spring barley (less than 3%) and 7% reduction in the sugar beet yield.

Full Text: PDF (490 KB)


Title: Renewable Energy: Comparison of Nuclear Energy and Solar Energy Utilization Feasibility in Northern Nigeria
Author(s): Ismaila Yusuf Pindiga, Olusola Olorunfemi and Bamisile
Paper ID: ATE-15100263
Pages: 19 - 23
Abstract: The use of fossil fuel to generate energy poses great danger to the environment due to pollution and carbon emissions. Nigeria greatly depends on fossil fuel source to generate energy for electric power and transportation. The major fuel crisis of 1973 followed by other minor ones in subsequent years, triggered several nations to seek for alternative energy source. That has given birth to Renewable Energy Technology. In Nigeria, electricity is produced primarily through the combustion of coal, natural gas and oil. Economically, fossil fuel of such caloric value should be replaced by low value fuels which have no other application. The production of electricity from nuclear was thought to be an alternative solution. But, it has a key environmental, economic and social role to play in meeting the growing demand for electricity throughout the world. With abundant sunshine particularly in Northern part of Nigeria all year round, the country can utilize solar energy to her best advantage. The paper assesses the challenges of nuclear energy, explores the opportunities of solar energy utilization and concludes that appropriate investment in solar infrastructure and utilization can provide large amount of electricity to fill the Nigeria’s projected energy demand gap by 2030.

Full Text: PDF (195 KB)