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Effect of Spacer Length between Consecutive Bends on Friction Factors of U-Type Wavy Tubes

Sultan Salauddin, Md. (Department of Mechanical Engineering, 2013-03)

U-type wavy tubes are used in a great number of heat transfer equipment and flow transmitting devices. It provides a long flow path in a relatively small space and thereby allows the fluid flowing through the tube to have ...

Thermal characteristics of an alumunum closed-loop pulsating heat pipe charged with ammonia

Shahidul Haque, Md. (Department of Mechanical Engineering, 2011-12)

Pulsating heat pipe is a two-phase heat transfer device that uses pulsating motion to transfer heat from a source and passively move it to a condenser or radiator. In the recent past, many researches have been carried ...

Computational Study on the Unsteady Shock Wave Dynamics around a Circular Arc Airfoil in Transonic Internal Flow

Mostaqur Rahman, Md. (Department of Mechanical Engineering, 2013-02)

Self-sustained shock wave oscillations on airfoils at transonic flow conditions are associated with the phenomenon of buffeting. The physical mechanisms of the periodic shock motion are not yet fully understood even though ...

Movement of the Wetting Front during Water Jet Impingement Quenching on Hot Solid Surface

Monjur Rahman, Md. (Department of Mechanical Engineering, 2011-02)

The criterion for the movement of the wetting front (visible leading edge of a moving wetting area) on a hot solid surface due to impingement of liquid jet is important for clear understanding of quenching / cooling ...

Computational Study of the Lift to Drag Ratio of Lifting Body Aircraft with Volumetrically Equivalent Fuselages of Different Profiles

Mahbubul Islam, Md. (Department of Mechanical Engineering, 2011-06)

In this thesis, the effect of airfoiled fuselages on the improvement of overall lift to drag ratio of Unmanned Aerial Vehicle (UAV) is investigated, where along with the wing, fuselage also provides some lift. To compare ...

Computational Study on the Control of Self-sustained Shock Oscillation around a Supercritical Airfoil in Transonic Flow

Mahbub Alam, Md. (Department of Mechanical Engineering, 2012-10)

Transonic flow around supercritical airfoil involves shock induced oscillation at certain free stream Mach number and angle of attack due to the interaction of shock wave with airfoil boundary layer. This interaction ...

Experimental Investigation of Wind Load on Tall Buildings with Octagonal Cross-section

Jomir Hossain, Md. (Department of Mechanical Engineering, 2012-12)

In this research work, an experimental investigation of wind load on octagonal cylinder was carried out. The study was performed on both the single cylinder and the group consisting of three cylinders, arranged in staggered ...

Investigation of mechanical properties of jute stick flour reinforced polypropylene composites

Hafizur Rahman, Md. (2011-12)

Now a days, natural fiber reinforced polymer matrix composites had caused revolution in the field of materials and received wide attention of the researchers from all over the world because of their outstanding advantages ...

Mechanical characterization of water hyacinth reinforced polypropylene composites

Saha, Manabendra (Department of Mechanical Engineering, 2011-07)

At present, natural fiber reinforced polymer matrix composites have received wide attention of the researchers from all over the world because of their outstanding advantages of environment friendliness, biodegradability, ...

Brittle Fracture Characteristics of a Thick -Walled Cylinder with an FGM Coating at the Inner Surface

Lumaya Ahmed (Department of Mechanical Engineering, 2012-06)

This study is concerned with the brittle fracture characteristics of a thick-walled cylinder with a functionally graded material (FGM) coating at the inner surface having two diametrically opposed edge cracks. First, the ...

Study of performance of an Air-conditioning system and cooling load calculation by using developed software for a Building

Mozammel Hossan, Khandakar (Department of Mechanical Engineering, 2012-02)

Software development for cooling load calculation specialy for large buildings in countries of 24° north location has been aimed in this research work. Most of the air-conditioning units in service provide comfort air ...

Effects of Jute Fiber on the Biodegradation of Polymer Composites

Mumtahenah Siddiquee, Kh. (Department of Mechanical Engineering, 2012-05)

Natural fiber is commonly used to create environmental friendly biodegradable polymer composites. In the vision of biodegradable polymer composite the possibility of jute fiber polymer composites were evaluated in this ...

Effect of Vibration on the Twisting Rate of Ring Spinning for the Production of Yarn

Hosne Ara Begum (Department of Mechanical Engineering, 2012-03)

This work presents the effect of vibration on yarn tension as well as friction between ring and traveller and their temperature rise during spinning. It also examines how friction force is affected by amplitude and frequency ...

Investigation of the Effect of NACA 4416 Aerofoil Shaped Fuselage on the Performance of an Unmanned Air Vehicle

Jahangir Alam, G.M. (Department of Mechanical Engineering, 2013-12)

The piloted aircraft were predominantly used for surveillance and reconnaissance missions but the vast technological improvements in anti-aircraft weapons, interceptor aircraft coupled with the high cost of state of the ...

Analysis of Thermoelastic Characteristics of a Rotating Circular Disk with an FGM Coating at the Outer Surface”, submitted by Faruk Ahmed Sohag

Faruk Ahmed Sohag (Department of Mechanical Engineering, 2012-05)

This study investigates the thermoelastic characteristics of a thin circular functionally graded material (FGM) disk and a homogeneous disk with an FGM coating at the outer surface. Both the disks are assumed to have uniform ...

Energy, Exergy and Environmental Impact Analyses of Barapukuria Coal Based Thermal Power Plant

Farhana Alam (Department of Mechanical Engineering, 2013-04)

Energy and exergy analyses of Barapukuria 2x125 MW coal-based thermal power plant have been carried out in order to evaluate the energetic and exergetic efficiencies and losses of different components and the overall ...

Molecular Simulation of Amorphous Polymer and Its Carbon Nanotube Based Composites

Afsana Ahmed (Department of Mechanical Engineering, 2011-04)

Since their discovery in 1991, carbon nanotubes (CNTs) have been the focus of considerable research due to their remarkable physical and mechanical properties reported. This form of carbon has potential applications in ...

Energy and Exergy Based Analysis of A Multi-Fuelled SI Engine

Adnan Morshed (Department of Mechanical Engineering, 3013-11)

In the present work, energy and exergy based analyses of a single cylinder, four-stroke, spark ignition engine fuelled by six di erent fuels namely iso-octane, methane, hydrogen, methanol, ethanol and nbutanol have been ...

Study Of Heat Transfer ofaA Solid With Protective Fabric Under Hot Air Jet Impingement

Nazrul Islam, A.K.M. (Department of Mechanical Engineering, 2013-05)

This research focused on the experimental analysis of the thermal response of a solid base plate (mimic to skin) and also the performance of fire protective fabric under hot air jet impingement situation. This investigation ...

Effect of variable valve timing on SI engine performance

Nusair Mohammed Ibn Hasan (Department of Mechanical Engineering, 2010-07)

In the modern world, one of the biggest concerns from the energy point of view is the ever depleting supply of fossil fuels. The automotive industry is especially impacted. In recent years, the price of fuel oils has ...

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