Division of Mechanical Sciences: Recent submissions
Now showing items 1801-1820 of 1920
-
Tribology Of Aluminium Alloys Against Steel Under Boundary Lubricated Condition
(2009-04-15)Aluminium silicon alloy has been found to be advantageous in many automobile components like pistons, cylinders, brakes and clutches. The main objective in using these alloys is to obtain lightweight and low friction ... -
A New Insight Into Recursive Forward Dynamics Algorithm And Simulation Studies Of Closed Loop Systems
(2009-04-02)Rigid multibody systems have been studied extensivley due to its direct application in design and analysis of various mechanical systems such as robots and spacecraft structures. The dynamics of multibody system is governed ... -
Wavelet Based Spectral Finite Elements For Wave Propagation Analysis In Isotropic, Composite And Nano-Composite Structures
(2009-04-02)Wave propagation is a common phenomenon in aircraft structures resulting from high velocity transient loadings like bird hit, gust etc. Apart from understanding the behavior of structures under such loading, wave propagation ... -
Unsteady Flow Field Downstream Of A Sudden Expansion
(2009-04-02)Separating and reattaching flows are important in a large number of engineering configurations. The flow through a sudden expansion (backward-facing step) represents a conceptually simple case of this class of flows and hence ... -
Development Of An Activated Carbon+ HFC 134a Adsorption Refrigeration System
(2009-04-01)The demands facing the refrigeration industry are minimal usage of conventional energy sources for compression and avoidance of ozone depleting substances. One of the approaches to combat these issues is the use of thermally ... -
Air-Sea Flux Measurements Over The Bay Of Bengal During A Summer Monsoon
(2009-03-19)Majority of the rain producing monsoon systems in India form or intensify over the Bay of Bengal and move onto the land. We expect the air-sea interaction to be a crucial factor in the frequent genesis and intensification ... -
Oxygen Transfer In Pichia Pastoris Fermentation
(2009-03-17)Recombinant Pichia pastoris is one of the important methylotropic yeast due to its robustness and ability to produce hormones like human chorionic gonadotropin (hCG), luteinizing hormone (LH) extracellularly. High growth ... -
Extended Range Predictability And Prediction Of Indian Summer Monsoon
(2009-03-17)Indian summer monsoon (ISM) is an important component of the tropical climate system, known for its regular seasonality and abundance of rainfall over the country. The droughts and floods associated with the year-to-year ... -
Shape Optimization Using A Meshless Flow Solver And Modern Optimization Techniques
(2009-03-17)The development of a shape optimization solver using the existing Computational Fluid Dynamics (CFD) codes is taken up as topic of research in this thesis. A shape optimizer was initially developed based on Genetic ... -
Numerical Simulations Of Axisymmetric Near Wakes At High Reynolds Numbers
(2009-03-13)The flow past the needle of a Pelton turbine injector is an axisymmetric wake embedded in a round jet. The wake does not fully relax to yield a uniform velocity jet due to the short distance between ... -
Kalman Filter Estimation Of Ionospheric TEC And Differential Instrumental Biases Over Low Latitude Using Dual Frequency GPS Observations
(2009-03-13)The low latitude tropical ionosphere has been investigated by various researchers using Global Positioning System (GPS). Presently for many civil aviation applications, the ionospheric modeling of the tropical region has ... -
Improved Solution Techniques For Trajectory Optimization With Application To A RLV-Demonstrator Mission
(2009-03-12)Solutions to trajectory optimization problems are carried out by the direct and indirect methods. Under broad heading of these methods, numerous algorithms such as collocation, direct, indirect and multiple shooting methods ... -
Development Of Efficient Modeling Methodologies Of Adhesively Bonded Joints For Crash Simulations
(2009-03-12)In this thesis, a new modeling methodology applicable to adhesively bonded joints for crash simulations is presented. Using this approach, adhesive joints can be modeled without using minute solid elements thus reducing ... -
Rotationally Invariant Kinetic Upwind Method (KUMARI)
(2009-03-11)In the quest for a high fidelity numerical scheme for CFD it is necessary to satisfy demands on accuracy, conservation, positivity and upwinding. Recently the requirement of rotational invariance has been added to this ... -
Time Splitting Methods Applied To A Nonlinear Advective Equation
(2009-03-09)Time splitting is a numerical procedure used in solution of partial differential equations whose solutions allow multiple time scales. Numerical schemes are split for handling the stiffness in equations, i.e. when there are ... -
Towards Measurement And Simulation Of Elasto-Plastic Deformation
(2009-03-09)The stretch forming process is frequently used in the automotive industry (outer pan- els, inner panels, stiffeners etc.), the packaging industry and household appliances sector, to manufacture complicated shapes and ... -
Development And Validation Of Two-Dimensional Mathematical Model Of Boron Carbide Manufacturing Process
(2009-03-06)Boron carbide is produced in a heat resistance furnace using boric oxide and petroleum coke as the raw materials. In this process, a large current is passed through the graphite rod located at the center of the cylindrical ... -
Kinetics Of Pressureless Infiltration Of Al-Mg Alloys Into Al2O3 Preforms : A Non-Uniform Capillary Model
(2009-03-06)Al-Mg alloys spontaneously infiltrate into porous ceramic preform in a nitrogenous atmosphere above 750 °C with Mg either pre-alloyed or introduced at the interface to initiate the process. The governing process variables ... -
Modeling Of Liquid Flow In A Packed Bed Under Influence Of Gas Flow
(2009-03-05)The aim of the current study is to model (non-wetting) liquid flow in a packed bed under the influence of gas flow. It has been observed experimentally that non-wetting liquid flows in a packed bed in form of small droplets ... -
Microstructure And Texture Evolution And Its Effect On Mechanical Properties In Dilute Magnesium Based AZ21 Alloy
(2009-03-05)Dilute Mg alloys are exclusively identified for wrought structural applications in automotive industry. Any improvement in mechanical properties of alloys is possible only by grain size refinement and by the development ...