Division of Mechanical Sciences: Recent submissions
Now showing items 101-120 of 2069
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Low Reynolds Number Vortex Shedding In Three-dimensional Flows
Understanding of the flow behind the bluff body poses a great challenge and remains almost entirely in the empirical and descriptive realm of knowledge. Flow in the wake of bluff bodies is characterized by the phenomenon ... -
Dynamic behavior of electro-rheological fluid sandwich beams
Electrorheological (ER) fluids are fluids with controllable rheological properties. The study of change in rheology of suspensions due to application of electric field is of interest both from academic and industrial points ... -
Development and critical assessment of a new flic method for base flows
The motivation for the present work stems from two complex base flow problems of relevance to satellite launch vehicles, namely the flow about the base of a rocket body containing an exhaust jet and the aerodynamics of ... -
Reverse transition in a two dimensional boundary layer flow
Experiments on reverse transition were conducted in two-dimensional accelerated incompressible turbulent boundary layers. Mean velocity profiles, longitudinal velocity fluctuations u′u'u′ (i.e., u′2‾\overline{u'^2}u′2), ... -
Inverse transition from turbulent to laminar flow in a two-dimensional channel
An experimental investigation on inverse transition from turbulent to laminar flow in a two-dimensional channel was carried out. The experiments were conducted in the inverse transition region at Reynolds numbers of 525, ... -
Studies on transition from laminar to turbulent flow in a pipe
This thesis describes some investigations on the transition from laminar to turbulent flow in a straight pipe of circu lar cross-section. It is found that Emmons* Theory of transition by the formation and growth of ... -
UAV Group Autonomy In Network Centric Environment
It is a well-recognized fact that unmanned aerial vehicles are considered an essential element in today’s network-centric integrated battlefield environment. Compared to solo UAV missions, deploying multiple unmanned aerial ... -
In-Situ Shear Wave Velocity Measurement and Interpretation by Different Methods of Testing
A significant challenge in seismic site classification often arises from the conflicting shear wave velocity (VS) profiles often obtained using different survey methods, further complicated by uncertainties introduced when ... -
Investigating the geodynamics of the Indian plate using time-dependent mantle convection models
The northward migration of the Indian plate after breaking apart from Pangaea in Mesozoic followed by its collision with Eurasia during Cenozoic is a remarkable example of continental drift. Associated with this tectonic ... -
Rotary atomization of non-Newtonian liquids for Spray drying applications
Food wastage poses a significant threat to the nation’s food supply and safety due to inadequate storage infrastructure and logistics facilities. This study explores the potential of spray drying as a viable solution to ... -
On the mismatch between predicted and measured frequencies in model testing
Mathematical models verified against ground test data are often necessary in the aerospace industry. They are used for predicting system performance in the intended as well as in any altered operating environments. They ... -
Transient and steady-state response of second and higher order non-linear systems
The present investigation deals with the transient flnfl steady-state response o£ second and higher order nonlinear systems. The method of attack consists of the ultraspherical polynomial approximation and the weighted ... -
Lay Tracks : New approach to automated quadrilateral mesh generation using MAT
This thesis describes Lay Tracks, a new mesh generation algorithm to automatically generate an all quad mesh using the medial axis transform (MAT). LayTracks combines the merits of two popular direct techniques for quad ... -
Some approximate methods of analysis of Non-Linear Dynamical systems
The present investigation concerns some approximate methods of analysis in the area of non-linear oscillations. The analysis includes the steady-state as well as the transient response of non-linear systems. In both cases, ... -
Understanding failure in heterogeneous materials
The failure of heterogeneous materials is a practical problem that occurs in several diverse applications. Material heterogeneity can arise from porosity (e.g., due to some processing history), variation in continuum-scale ... -
Evaluating Sustainable Transport Measures Towards Fulfilling Sustainable Development Goals
Transportation system generates significant negative externalities such as air pollution, traffic congestion, road‑traffic accidents, and substantial greenhouse‑gas emissions, that if left unaddressed, threaten to undermine ... -
A Capillary-fed Evaporative Microthruster for Micro/Nano Satellites
Small satellites offer a unique platform for short-term and low-cost communications and surveillance missions. They are essential for, scientific research, and technology demonstration due to their ability to provide rapid ... -
Virtual Element Methods for Phase Field Fracture: Mesh Transitions, Composite Damage, and Stabilization-Free Formulations
Accurate simulation of crack propagation requires discretization methods that combine geometric flexibility with computational efficiency. Although the finite element method (FEM) and its variants remain the widely used ... -
Knowledge Management in Research and Development Projects: Mapping intellectual Assets for Innovation in Manufacturing
Innovation is the key driver of competitive advantage in a knowledge economy. In the manufacturing industry, a major portion of innovation emerges from research and development (R&D) projects. These projects require ... -
Strain Controlled Low Cycle Fatigue and Creep-fatigue interaction behaviour of A type 316(L) Stainless Steel
Type 316L(N) stainless steel (SS) is the currently favored structural material for several high temperature components in the primary side of the liquid metal cooled fast breeder reactor. The choice of this material is ...