Mechanical Engineering (ME): Recent submissions
Now showing items 21-40 of 493
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Structure and properties of wear resistant high chromium cast irons
The cost of replacing worn parts in mining equipment, cement plants, thermal power plants and machinery poses a continuous challenge to materials technologists. Components designed for such applications must possess adequate ... -
Structure - property correlation of cast iron by FEM
Correlation of the structure of cast iron with its mechanical properties through the assessment of micro stresses has been addressed in this thesis. The large variation in the shape-spherical to flake-size, and distribution ... -
Heat transfer from flat plates to an air let
Heat transfer from an electrically heated flat plate to an air jet at different angles of attack was investigated. Brass plates of diameters 1 in., 2 in., 4 in., 5 in., 6 in., and 8 in. were used in the study. The jet ... -
Strain Rate Response and its effect in plane strain abrasion of metals by a wedge
Understanding the wear process is important for preventing loss of material in industry as well as in everyday applications. Many models are available to calculate the wear rate. The simplest models are based on the ... -
Analytical And Experimental Studies On Effect Of Bends In Engine Manifolds On The Gas Exchange Phenomena
Factors which influence the gas?exchange processes are numerous and inter?related in a complex manner. In the analytical formulations proposed by earlier investigators to examine gas?exchange phenomena, the inlet and exhaust ... -
Transonic flow in a rotating turbine cascade of large pitch to chord ratio.
A rotating turbine cascade was designed to simulate the nearly two dimensional flow past a flat plate turbine cascade of large pitch to chord ratio. The turbine was tested in the transonic flow range for flow incidence ... -
Analysis of heat transfer in the forehearth in glass melting.
This work is a computational study of the interaction between conductive, convective, and radiative modes of heat?transfer phenomena in molten glass as it flows through the forehearth unit in a glass tank furnace. Since ... -
Investigation of a mixed flow immpeller.
Investigations have been conducted on a mixed?flow impeller to provide basic information for use in the design of high?specific?speed pumps. Such pumps are widely used for cooling?water duties in thermal power stations in ... -
Experimental and numerical investigation of localized necking in aluminium alloy tubes during hydroforming
Metal forming is an important technological operation in manufacturing, particularly in the automotive industry. Several components are shaped by sheet?metal forming, tube hydroforming, and bending processes. With advancements ... -
Mechanics and Mechanisams in Fretting Damage for Stainless Steel and Chromium Carbide Coatings
Fretting is of serious concern in many industrial components, especially in the nuclear industry, for the safe and reliable operation of various components and systems. Although considerable efforts have been made to ... -
Casing boundary layers in a multistage axial compressor
The casing boundary layers strongly influence the performance of axial?flow compressors. Computational theories exist for calculating casing?wall boundary?layer growth, and although they are relatively successful in helping ... -
Study of diffusers with relation to high speed contrifugal compressors
The working range of high?speed centrifugal compressors, where the flow at exit from the impeller is supersonic, is very narrow. This narrow range is attributed to the performance of the diffusers that follow the impeller. ... -
Design And Synthesis of Band Gap Engineered Conjugated Molecules For Organic Electronics
Research in conducting polymers in the area of optoelectronics has expanded enormously and diversified into organic photovoltaics (OPV), organic light?emitting diodes (OLED), organic field?effect transistors (OFET), etc. ... -
Studies on transverse fin tube heat exchangers
This thesis presents an investigation of heat?transfer and pressure?drop characteristics of tubes with parallel fins (straight and inclined) placed concentrically inside an outer pipe through which air is flowing. Experimental ... -
1Some studies on experimental viscosity of refrigerant vapors R12, R14, R22 and R114 and their mixtures at elevator temp. & pressure pt2
The present investigation has been undertaken using two oscillating?disc viscometers. The first viscometer is a modified version of an earlier model to suit refrigerant vapours at pressures up to five atmospheres and ambient ... -
Type and dimensional synthesis of spring mechanics for circuit breakers
Circuit breakers are crucial elements in high?voltage electrical substations, used to make and break circuits manually or automatically. They protect high?value equipment in the switchyard, such as transformers, by ... -
Activated carbon-nitrogen adsorption cryocoolers : characterization of sub-systems and experiments on a laboratory model
This thesis deals with the development of a laboratory model of an activated?charcoal杗itrogen cryocooler to cater to heat loads of the order of 1 W in the temperature range 80�0 K. Among other aspects, adsorption and thermal ... -
Modeling of thermo-fluid dynamic processes in a new, Low-Emission two-stroke IC engine
A comprehensive numerical technique has been developed to simulate the various processes in a two?stroke engine. More specifically, detailed multi?dimensional models that can simulate compressible, turbulent, two?phase ... -
On the flow-acoustic modelling of the exhaust system of a reciprocating internal combustion engine
Reciprocating machines, such as internal?combustion engines, compressors, etc., are among the dominant producers of noise. For a suitable design of noise?reducing equipment-primarily mufflers-the noise?generating sources ... -
Laminar free convection heat transfer from vertical cylinders and wires
This thesis presents investigations on laminar free?convection heat transfer to a quiescent fluid from vertical cylinders and wires with the following boundary conditions: Isothermal surface temperature, Non?isothermal ...