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Dissertations/Theses - Department of Mechanical Engineering: Recent submissions

Now showing items 361-380 of 380

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, 2013-11-09)

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 ...
Exergy Analysis of a Four Stroke Spark-Ignition Engine Using Different Fuels

Reaz Mohiuddin, Muhammad (Department of Mechanical Engineering, 2010-07)

The present thesis reports the exergestic analysis of a four stroke spark ignition internal combustion engine fuelled by four fuels namely octane, methane, hydrogen and methanol. A thermodynamic model has been developed ...
Analysis of Non-linear Self-excited Vibrations for Multiple Degrees of Freedom Systems

Sayem Uddin, Md. (Department of Mechanical Engineering, 2010-03)

Dynamics of nonlinear self-excited vibrations for both two degrees of freedom system (2DOFS) and three degrees of freedom system (3DOFS) using nonlinear springs and dampers is treated as a boundary value problem (BVP) ...
Modeling of Tensile Modulus and Strength of Carbon Nanotube Reinforced Polymer Nancomposites

Saidul Islam, Md. (Department of Mechanical Engineering, 2010-10)

Carbon nanotubes (CNTs) possessing extremely high stiffness, strength, and resilience would be the ultimate reinforcing materials for the development of polymer reinforced nanocomposites. CNTs are promising new materials ...
Determination of Wall Correction Factors for Small Particles of Different Shapes Moving in a Cylindrical Channel

Imran Khan, Md. (Department of Mechanical Engineering, 2010-08)

Motion of small particles of different size and shape plays an important role in many applications of engineering and scientific significance. A finite element model, consisting of Navier–Stokes and continuity equations ...
Design and Validation of Wind Turbine’s Power Simulation by a Remote Controlled AC Motor

Abul Kalam Azad, Md. (Department of Mechanical Engineering, 2010-10)

A statistical analysis of 10 minutes interval wind data at 20 m height for different location of Bangladesh has been made. The data has been shorted in sequence of appropriate frequency as hourly, daily and monthly mean ...
Analysis of a Guided Deep Beam of Composite Materials

Muzibur Rahman, M (Department of Mechanical Engineering, 2009-02)

Analytical solution scores the highest degree of importance in structural analysis. But the existing mathematical models for analytical solutions are still inadequate. Neither the beam theory nor the stress function approach ...
Experimental Investigation of Thermal Characteristics of Two-Phase Loop Thermosyphon

Kamal, M. Mustafa (Department of Mechanical Engineering, 2010-08)

An experimental investigation on heat transfer characteristics of an evaporator of a two-phase closed-looped thermosyphon is carried out in this study. Experiments are conducted using three different evaporator surfaces, ...
Stress Analysis of Cracked Stiffened Panels under Flexural and Axial Loading

Hafijur Rahman (Department of Mechanical Engineering, 2013)

This thesis deals with an efficient analytical scheme for the analysis of stress and displacement fields of boundary-value problems of plane elasticity with mixed boundary conditions and material discontinuity. More ...
Optimizing the Compression Ratio of a CNG Converted Diesel Engine

Golam Saklayen (Department of Mechanical Engineering, 2010-04)

An experimental investigation on optimizing the compression ratio (CR) of diesel to retrofitted complete CNG converted engine was conducted. The investigation was done by experimental setup buildup. In the present ...
New Approach to Computational Analysis of Mixed-Boundary-Value Stress Problems of Curved Bodies

Ghosh, Abhishek Kumar (Department of Mechanical Engineering, 2014-03)

This research addresses a new method of analysis for the curved structural members under various types of loadings and supporting conditions at the boundary surfaces. In this work, theory of elasticity, a new potential ...

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