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Dissertations/Theses - Department of Mechanical Engineering: Recent submissions

Now showing items 141-160 of 367

Performance and design optimization of a vertical-axis straight-bladed darrieus wind turbine

Dhar, Nikhil Ranjan (Department of Mechanical Engineering, 1987-09)

A theoretical investigation of aerodynamic performance and design is carried out for vertical-axis straight-bladed Darrieus wind turbines. Aerodynamic performance is performed with blades of cambered;cross-section while ...
Utilization of river current for small scale electricity generation in Bangladesh

Nazmul Huda Al Mamun (Department of Mechanical Engineering, 2001-07)

The power crisis in Bangladesh and elsewhere in the Third World highlights the need for new technologies, which local communities can use to improve their lifestyle. Many arid , \ areas are characterized by having large ...
Effects of evaporator geometry and working fluids on the performance of a two - phase loop thermosyphon

Nazmoon Naher (Department of Mechanical Engineering, 2009-03)

A two-phase loop thermosyphon had been experimented with a VIew to cooling electronic components that dissipate high heat flux. Loop thermosyphon is a device consisting of an evaporator, condenser, reservoir, two check ...
Performance of biodiesel from mustard oil as an alternative fuel for diesel engine

Ameer Uddin, Sayed Mohammad (Department of Mechanical Engineering, 2013-07)

Bio-fuel is renewable engine fuel that can be used directly in any existing, unmodified diesel engine. Bio-fuels create new markets for agricultural products and stimulate rural development because bio-fuels are generated ...
Analysis of a simply-supported thick composite beam with stiffened lateral ends

Abdullah Al Mamun (Department of Mechanical Engineering, 2014-05)

This thesis deals with the analysis of stress and displacement fields of a mixed boundaryvalue problem of fiber-reinforced composite materials. More specifically, the elastic field of a thick stiffened simply-supported ...
Analysis of elastic field in structural elements of laminated composites by displacement potential approach

Nayeem Md. Lutful Huq (Department of Mechanical Engineering, 2007-06)

Composite materials drew attention of researchers from all over the world due to their outstanding advantages over conventional materials. They are being increasingly used as structural elements in almost all engineering ...
Study of a SI engine using biogas for driving a small generator

Naznin, Nadira (Department of Mechanical Engineering, 2006-09)

The increase in conventional fuel prices is bringing fOlWardthe research on alternative fuels. Running of conventional internal combustion engines using alternative fuels is a research area where different types of ...
Flow in a parallel-plate channel with on moving wall

Quamruzzaman, K.B.M. (Department of Mechanical Engineering, 1973-11)

For abstract please see full text
Contact stresses in conical rollers under normal and tangential loads

Wasim Akram, Mohammad (Department of Mechanical Engineering, 2008-11)

Load transfer between components in engineering assemblies often causes very high localized stresses generally called contact stresses. The contact stresses are highly concentrated close to the contact region and decrease ...
Experimental study of flow characteristics in the near field of thermally stratified co-axial free jet

Nasim Hasan, Mohammad (Department of Mechanical Engineering, 2008-07)

Experimental investigations of the mean flow characteristics in velocity field as well as thermal field of thermally stratified co-axial free jets have been carried out for different boundary conditions. Non-isothermal ...
Effect of cyclic bending on the notch sensitivity to fracture

Roy, Murari Mohon (Department of Mechanical Engineering, 1996-02)

An experimental investigation on the fatigue behavior of mild steel shaft is presented. A newly developed machine in Mechanical Engineering Department, BUET, was useq to test the fatigue behavior of mild steel shaft. ...
Investigation of local strains of the superelastic shape memory alloy rods for tensile loading-unloading cycles

Mujibur Rahman Khan (Department of Mechanical Engineering, 2003-08)

This dissertation studies mechanical behaviours of the superelastic shape memory alloy (SMA) rods in terms of local deformations and time via tensile loading-unloading cycles for different end constraints. Most of the ...
Analysis of an oscillating squeeze flim between a rubber surface and a rigid

Muhannad Mustafa (Department of Mechanical Engineering, 2007-11)

Squeeze film theories have often been a major area of interest in fluid mechanics. In the present thesis, effects of surface roughness and permeability of rubber block on leakage flow rate and hydrodynamic force developed ...
Experimental study of heat transfer un turbulent flow thorugh a tube with perforated rectangular strip insert

Mostafa Kamal Bhuiya, Muhammad (Department of Mechanical Engineering, 2008-06)

An experimental investigation was carried out for turbulent flow heat transfer in a circular tube with perforated rectangular strip inserts. Mild steel perforated rectangular strips with holes of different diameters were ...
Computational study on the structure of the attached eddies in a turbulent boundary layer

Khalid Akbar, Muhammad (Department of Mechanical Engineering, 1998-11)

A computational study on the geometric and kinematic characteristics of the organized structures in a turbulent boundary layer is presented in this thesis. It contains primarily the explanations of various aspects of ...
Dynamic characteristics of servo-controlled mobile robot using optimum pulse width modulation (PWM)

Enayet Kabir, Muhammad (Department of Mechanical Engineering, 2009-01)

A mobile robot is designed and fabricated using locally available hardware components. It is driven by two independently controlled rear wheels and one unpowered omni-directional wheel in the front. A PIC microcontroller ...
Stability and stress analysis of parabolic pipe-reducers

Ashiqur Rahman, Muhammad (Department of Mechanical Engineering, 1994-04)

For joining pipes of unequal diameters, truncated parabolic shells can be used as pipe reducers instead of the traditional conical frustums, as the doubly curved parabolic shell elements are superior to the conical shells ...
Brittle fracture characteristics of thick-walled functionally graded material cylinders

Anisuzzaman, Muhammad (Department of Mechanical Engineering, 2003-08)

This study is concerned with the brittle fracture characteristics of a thick-walled functionally graded material (FGM) cylinder. Two diametrically-opposed radial edge cracks emanating from the inner surface of the cylinder ...
Maximum heat flux and wetting delay during quenching of high temperature carbon steel block

Mousumi Ahmed (Department of Mechanical Engineering, 2008-07)

Jet impingement quenching shows promising potential of achieving high heat flux today. Most recent studies investigated thermodynamic behaviors during quenching of copper, brass and steel blocks by jet impingement and ...
Experimental investigation and the design analysis a HAWT with circular arc blade section

Hosney Ara Begum, Most. (Department of Mechanical Engineering, 2002-11)

An experimental investigation and design analysis of a horizontal axis wind turbine with circular arc blade section have been performed. An elaborate theoretical analysis of the performance characteristics of the wind ...

Now showing items 141-160 of 367

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