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- Dr. Muhammad Abdul Mujeebu has obtained Bachelor of Technology (B.Tech) degree in Mechanical Engineering, from Kerala... moreDr. Muhammad Abdul Mujeebu has obtained Bachelor of Technology (B.Tech) degree in Mechanical Engineering, from Kerala University, India; Master of Technology (M. Tech) degree in Energy Management, from National Institute of Technology Calicut (NITC), India; and PhD degree and Postdoctoral Fellowship from Universiti Sains Malaysia (USM), Malaysia. He is currently serving as Associate Professor at College of Architecture and Planning, University of Dammam, Saudi Arabia. His research areas include combustion in porous media, industrial cogeneration and trigeneration, micro combustors & MEMS, electronic cooling & packaging, CFD analysis of energy systems, IC engines and combustion, alternate fuels and refrigerants, energy and thermal management of buildings and renewable energy systems. He has more than 60 publications in highly indexed journals. He is recipient of Hall of Fame Award from USM Malaysia for excellence in publication, Founder and Chief Editor of “International Journal of Advanced Thermofluid Research (www.ijatr.org), and Founder and Chairman of International Research Establishment for Energy and Environment (www.ireee.net). He also offers hands on training and consultancy on scientific research, writing and publishing. His current responsibilities at University of Dammam include preparing Program Accreditation documents such as Self-Study Report, Annual Program Report, etc., and editing and shaping of research proposals for funding and research articles for publishing. He is also interested in Higher Education Quality and in materializing a “Self-Sustaining” higher education campus for future generations.(Dr. Muhammad Abdul Mujeebu has obtained Bachelor of Technology (B.Tech) degree in Mechanical Engineering, from Kerala University, India; Master of Technology (M. Tech) degree in Energy Management, from National Institute of Technology Calicut (NITC), India; and PhD degree and Postdoctoral Fellowship from Universiti Sains Malaysia (USM), Malaysia. He is currently serving as Associate Professor at College of Architecture and Planning, University of Dammam, Saudi Arabia. His research areas include combustion in porous media, industrial cogeneration and trigeneration, micro combustors & MEMS, electronic cooling & packaging, CFD analysis of energy systems, IC engines and combustion, alternate fuels and refrigerants, energy and thermal management of buildings and renewable energy systems. He has more than 60 publications in highly indexed journals. He is recipient of Hall of Fame Award from USM Malaysia for excellence in publication, Founder and Chief Editor of “International Journal of Advanced Thermofluid Research (www.ijatr.org), and Founder and Chairman of International Research Establishment for Energy and Environment (www.ireee.net). He also offers hands on training and consultancy on scientific research, writing and publishing. His current responsibilities at University of Dammam include preparing Program Accreditation documents such as Self-Study Report, Annual Program Report, etc., and editing and shaping of research proposals for funding and research articles for publishing. He is also interested in Higher Education Quality and in materializing a “Self-Sustaining” higher education campus for future generations.)edit
- Prof. Dr. Jayaraj S, NIT Calicut, Dr. Ashok S, NIT Calicut, Prof. Dr. Zulkifly Abdullah, USM Malaysia, Prof. Dr. A A Mohamed, University of Calgary Canada, Dr. Zailani Abu Bakar, USM Malaysiaedit
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The electrical energy consumption in Malaysia has increased sharply in the past few years, and modern energy efficient technologies are desperately needed for the national energy policy. This article presents a comprehensive picture of... more
The electrical energy consumption in Malaysia has increased sharply in the past few years, and modern energy efficient technologies are desperately needed for the national energy policy. This article presents a comprehensive picture of the current status of energy consumption and various energy conservation options viable for Malaysian environment. A detailed survey is made to assess the consumption pattern and the existing techniques for energy efficiency. Based on the survey, the feasibility of improving the available systems and adopting new programs in different sectors is investigated. The study reveals the fact that the energy conservation policy of the country has been fairly improved in the last ten years. However the country has to pay more attention to this area and make urgent measures to adopt more energy efficient technologies in various sectors.
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... Sami Abulnoun Ajeel University of Technology, Bagdad, Iraq E-mail: sami-tech@yahoo.comAhmed M. Saleem Technical College, Mosul, Iraq E ... 5. Extrusion Process Extrusion process was done on die by using hydraulic press, type IVA LOLA... more
... Sami Abulnoun Ajeel University of Technology, Bagdad, Iraq E-mail: sami-tech@yahoo.comAhmed M. Saleem Technical College, Mosul, Iraq E ... 5. Extrusion Process Extrusion process was done on die by using hydraulic press, type IVA LOLA RIBER with capacity of 40 tons at ...
This paper presents a forecasting study of municipal solid waste generation (MSWG) rate and potential of its recyclable components in Kuala Lumpur (KL), the capital city of Malaysia. The generation rates and composition of solid wastes of... more
This paper presents a forecasting study of municipal solid waste generation (MSWG) rate and potential of its recyclable components in Kuala Lumpur (KL), the capital city of Malaysia. The generation rates and composition of solid wastes of various classes such as street cleansing, landscape and garden, industrial and constructional, institutional, residential and commercial are analyzed. The past and present trends are studied and extrapolated for the coming years using Microsoft office 2003 Excel spreadsheet assuming a linear behavior. The study shows that increased solid waste generation of KL is alarming. For instance, the amount of daily residential SWG is found to be about 1.62 kg/capita; with the national average at 0.8-0.9 kg/capita and is expected to be increasing linearly, reaching to 2.23 kg/capita by 2024. This figure seems reasonable for an urban developing area like KL city. It is also found that, food (organic) waste is the major recyclable component followed by mix paper and mix plastics. Along with estimated population growth and their business activities, it has been observed that the city is still lacking in terms of efficient waste treatment technology, sufficient fund, public awareness, maintaining the established norms of industrial waste treatment etc. Hence it is recommended that the concerned authority (DBKL) shall view this issue seriously.
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Research Interests: Engineering, Materials Engineering, Mechanical Engineering, Chemical Engineering, Civil Engineering, and 20 moreAerospace Engineering, Condensed Matter Physics, Visualization, Computational Materials Science, Automotive Engineering, Numerical Simulation, Turbulent boundary layer, Manufacturing Engineering, Flow Visualization, Oscillations, Composite structures, Crashworthiness, Second Order, Maritime Engineering, Numerical Model, Supersonic flow, Interdisciplinary Engineering, Shock Wave, Turbulence Model, and Reynolds Number(Aerospace Engineering, Condensed Matter Physics, Visualization, Computational Materials Science, Automotive Engineering, Numerical Simulation, Turbulent boundary layer, Manufacturing Engineering, Flow Visualization, Oscillations, Composite structures, Crashworthiness, Second Order, Maritime Engineering, Numerical Model, Supersonic flow, Interdisciplinary Engineering, Shock Wave, Turbulence Model, and Reynolds Number)
(Aerospace Engineering, Condensed Matter Physics, Visualization, Computational Materials Science, Automotive Engineering, Numerical Simulation, Turbulent boundary layer, Manufacturing Engineering, Flow Visualization, Oscillations, Composite structures, Crashworthiness, Second Order, Maritime Engineering, Numerical Model, Supersonic flow, Interdisciplinary Engineering, Shock Wave, Turbulence Model, and Reynolds Number)
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ABSTRACT Heat sinks are widely used to remove the heat from the microelectronic devices including Pentium and AMD processors. In the present study, four different types of heat sink have been used i.e. Pentiums III and IV, AMD Athlon and... more
ABSTRACT Heat sinks are widely used to remove the heat from the microelectronic devices including Pentium and AMD processors. In the present study, four different types of heat sink have been used i.e. Pentiums III and IV, AMD Athlon and Duron heat sinks; in order to analyze their performance. The paper presents the comparison of heat sinks of Pentium and AMD families. The simulation and experimental investigations have been made at different Reynolds numbers. The Fluent 6.2 software which is a computational fluid dynamics (CFD) code has been used in the simulation to predict the temperature and the flow fields. The experiments have been carried out by using an air chamber with nozzle at different Reynolds numbers. The Nusselt number and temperature distributions have been plotted against Reynolds number for all heat sinks. The simulation results obtained are found in satisfactory agreement with the experimental results.
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This paper presents three dimensional (3D) simulation of flow visualization in the encapsulation of stacked-chip scales packages (S-CSP), using finite volume method. The S-CSP model is constructed using GAMBIT and simulated using FLUENT... more
This paper presents three dimensional (3D) simulation of flow visualization in the encapsulation of stacked-chip scales packages (S-CSP), using finite volume method. The S-CSP model is constructed using GAMBIT and simulated using FLUENT CFD software. The epoxy molding compound is Hitachi CEL-9200 XU (LF) and its flow is assumed laminar and incompressible. Cross viscosity model and volume of fluid technique
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Research Interests: Engineering, Materials Engineering, Mechanical Engineering, Mass Transfer, Heat Transfer, and 14 moreFluid Dynamics, Heat and Mass Transfer, Numerical Simulation, Air flow, Hydrogen Energy, Injection Molding, Heat transfer coefficient, Experimental Study, Solar Collector, CHEMICAL SCIENCES, Finite Volume, Volume of Fluid, Three Dimensional, and Forced Convection
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ABSTRACT This article deals with the numerical modeling, development, and performance testing of a novel partial premix-type burner with a discrete porous medium using liquefied petroleum gas as fuel. The porous structure is made up of... more
ABSTRACT This article deals with the numerical modeling, development, and performance testing of a novel partial premix-type burner with a discrete porous medium using liquefied petroleum gas as fuel. The porous structure is made up of solid Al 2 O 3 spheres. The ...
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In the present study, an attempt is made to develop an eco-friendly and compact premixed liquified petroleum gas burner based on surface combustion in a porous inert medium. The premixing mechanism is the combination of a swirler and... more
In the present study, an attempt is made to develop an eco-friendly and compact premixed liquified petroleum gas burner based on surface combustion in a porous inert medium. The premixing mechanism is the combination of a swirler and steel wire mesh packing. The preheating and reaction zones are made up of alumina (Al2O3) foams of pore sizes, 26 and 8 ppcm, respectively. Experiments are conducted with 0.5 liters per minute of liquified petroleum gas fuel, which is found to be the minimum quantity required to produce a sustainable flame when mixed with 4 liters per minute of air, the mixture being highly fuel-rich. The combustion is facilitated by enough secondary (atmospheric) air to ensure complete combustion. The temperature distribution within the combustor; flame stability; maximum flame temperature; NO, CO, and SO2 emissions; and combustion efficiency are measured and compared with those of a conventional domestic liquified petroleum gas stove. The fuel saving potential of the proposed burner is also evaluated. It is found that the proposed burner could yield an 80% savings in fuel consumption and 75% reduction in NOx emissions compared to the conventional one. The CO and SO2 emissions are also well within the global standards.
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Utilization of the husk-fueled cogeneration system to meet the requirement of thermal and electrical needs enhances the energy efficiency and production capacity of rice mills. This will not only result in considerable savings but also... more
Utilization of the husk-fueled cogeneration system to meet the requirement of thermal and electrical needs enhances the energy efficiency and production capacity of rice mills. This will not only result in considerable savings but also leads to a sustainable supply of electricity and additional revenue from the surplus electricity generated from saved rice husk. This article presents a case study
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ABSTRACT The numerical and experimental investigations of three-dimensional (3-D) mold filling during encapsulation process in stacked-chip scale package (S-CSP) are presented. The finite difference method (FDM) based on Navier—Stokes... more
ABSTRACT The numerical and experimental investigations of three-dimensional (3-D) mold filling during encapsulation process in stacked-chip scale package (S-CSP) are presented. The finite difference method (FDM) based on Navier—Stokes equations has been employed for the flow analysis in the mold cavity. The mold flow is assumed to be non-Newtonian and non-isothermal. The proposed models can take care of polymer rheology with cure effect (Castro—Macosko model) and without cure effect (Cross model). A package with five, six, and seven overhang stacking dies without wire bonds is considered for simulation. The epoxy molding compound (EMC) used is HITACHI CEL-9200. The effects of gap between die top and mold cap surface, and between adjacent dies on flow rheology are analyzed and presented. The flow retardation in the limitation region (gap region) and smooth flow in the free region of the package is being predicted. Higher initial conversion of EMC demonstrated higher viscosity and slower melt front advancement especially under the overhang area of same die stacking region and critical gap between the die and mold cap. The void mechanism occurred due to unbalanced mold flow and critical gap clearance. The simulation results are verified with those obtained from a typical electronic industry and found in good agreement. From the results; the Castro—Macosko model is found to be more stable and reliable on the flow rheology.
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This paper presents a three dimensional heat and fluid flow analysis of two Plastic Leaded Chip Carrier (PLCC) packages mounted in tandem arrangement on a Printed Circuit Board (PCB) exposed to the free stream velocity. The numerical... more
This paper presents a three dimensional heat and fluid flow analysis of two Plastic Leaded Chip Carrier (PLCC) packages mounted in tandem arrangement on a Printed Circuit Board (PCB) exposed to the free stream velocity. The numerical simulation was done using ...
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ABSTRACT As part of the ongoing research on micro air vehicles, the present work focuses on the effect of membrane flexibility on the aerodynamic performance of flexible latex flapping wings. Wings with membrane thicknesses 0.37, 0.28,... more
ABSTRACT As part of the ongoing research on micro air vehicles, the present work focuses on the effect of membrane flexibility on the aerodynamic performance of flexible latex flapping wings. Wings with membrane thicknesses 0.37, 0.28, and 0.13 mm are chosen, which are named as least flexible (A), flexible (B), and most flexible (C), respectively. The experiments are performed in an air chamber of size 1.5 m × 1.5 m × 1.5 m, facilitated with wind velocities up to 15 m/s. The time-averaged lift and drag as functions of flapping frequency, forward flight velocity, the angles of attack (AoA), and advance ratio (J). The novel electronic control system developed previously is used to monitor and measure the flapping frequency. It is found that the effect of flexibility on the aerodynamic performance mainly depends on the range of flight speed; at 7200 ≤Re≤ 18,000, the lift and drag increase with increase of flexibility, and at 18,000 ≤Re≤ 25,200, the lift decreases and drag increases with increase of flexibility. Hence latex compliant (Wing C) wings are advantageous in the low Re range, while the least flexible wing (Wing A) is preferable for higher range.
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Research Interests: Engineering, Environmental Engineering, Materials Engineering, Mechanical Engineering, Cryogenics, and 9 moreTechnology, Cleaner Production, Biological Sciences, Classical Physics, Manufacturing Engineering, Experimental Techniques, Interdisciplinary Engineering, Applied Thermal Engineering, and Electrical And Electronic Engineering
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Cogeneration is proved to be one of the promising energy management techniques, which offers an efficient method of producing electricity and useful thermal energy from a common source. In the present study the economic and technical... more
Cogeneration is proved to be one of the promising energy management techniques, which offers an efficient method of producing electricity and useful thermal energy from a common source. In the present study the economic and technical feasibility of implementing steam ...
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ABSTRACT Though extensive research has been carried out on porous media combustion (PMC), more attention is needed to explore the feasibility of this promising technology for practical applications. In the present study an attempt is made... more
ABSTRACT Though extensive research has been carried out on porous media combustion (PMC), more attention is needed to explore the feasibility of this promising technology for practical applications. In the present study an attempt is made to develop an eco-friendly ...
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Flexible printed circuit boards (FPCBs) are going to replace rigid boards (PCBs) in numerous electronic devices due to their reduced thickness and ability to bend and adapt to various shapes. Deflection and stress are key factors... more
Flexible printed circuit boards (FPCBs) are going to replace rigid boards (PCBs) in numerous electronic devices due to their reduced thickness and ability to bend and adapt to various shapes. Deflection and stress are key factors affecting the reliability of FPCBs. In this paper, the fluid flow solver FLUENT and structural solver ABAQUS, are used to study the deflection and