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Browsing Student Theses (EMU) by Author "Alam, Meheboob"

Browsing Student Theses (EMU) by Author "Alam, Meheboob"

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  • Density waves and fluctuations in three-dimensional granular poiseuille flow 
    Malik, Ashish (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2008)
    In the present thesis, the gravity driven granular Poiseuille flow has been probed via event-driven simulations in three dimensions between two infinite parallel plates. A monodisperse system of “rough” inelastic hard ...
  • DSMC and fast spectral solutions of poiseuille flows: rarefied molecular and granular gases 
    Shashank, Ravichandir (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2023-08)
    Abstract not available
  • DSMC simulations of rarefied granular gases: hydrodynamics, rheology and segregation 
    Gupta, Ronak (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2017-11-16)
    Rarefied gas dynamics show marked deviations from Navier-Stokes dynamics, which make them interesting to study. This thesis on rarefied ’granular’ gas dynamics, aims to study a prototypical flow setup of smooth inelastic ...
  • Dynamics of granular poiseuille flow 
    Deepthi, S. (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2013-10-31)
    In the present study, a basic problem of granular particles flowing in a channel under the influence of gravity is considered. Granular particles are modeled as smooth inelastic hard spheres which interact through binary ...
  • Experimental studies in buoyancy-driven exchange flows and turbulent jet 
    Bharadwaj, Sunil V. (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2018)
    Buoyancy drives many flows in nature as well as in industrial processes. It drives the climate - it plays an important role in the vertical transport of heat and water vapour. Buoyancy also acts as a restoring force in ...
  • Experimental studies on taylor-couette flow of neutrally-buoyant suspensions 
    Ramesh, Prashanth (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2019)
    The well known Taylor-Couette flow, the flow between two rotating concentric cylinders is used for studies on hydrodynamic stability, flow transitions and pattern formation (Andereck et al., 1986; Benjamin, 1978a,b; ...
  • Experimental study of vertically vibrated granular matter: patterns and segregation 
    Ansari, Mohammed Istafaul Haque (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2015-10-19)
    This thesis explores the dynamical behavior of granular materials via experiments in a vertically vibrated granular bed. Experiments are designed with the primary objective to understand the pattern formation dynamics ...
  • Experiments on vibrated granular materials : waves, convection and segregation 
    Ansari, Mohammed Istafaul Haque (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2012)
    A granular material is a collection of solid particles or grains such that most of the particles are in contact with at least some of their neighboring particles. The terms granular materials, bulk solids, particulate ...
  • Kinetic theory and burnett order constitutive relations for a smooth granular gas 
    Gupta, Vinay Kumar (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2011)
    A granular material is a conglomeration of discrete macroscopic (>1 mm in size) solid particles or grains. Granular materials are commonplace in nature and industry. According to Richard et al. (2005), “Granular materials ...
  • Nonlinear hydrodynamics and rheology of granular and gas-solid suspensions 
    Saha, Saikat (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2017-07-31)
    Granular matter is a collection of large number of solid particles where the particle size ranges from 1mm to meters (Saturn’s ring) and it is found everywhere in nature (avalanche, debris flows, Planetary rings, etc.) ...
  • Nonlinear stability, bifurcation and mode interaction in granular plane couette flow 
    Shukla, Priyanka (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2010)
    This thesis starts with a brief overview of patterns in rapid granular flows driven by vibration, gravity and shear, e.g. standing wave patterns and convection rolls in a vibrated granular system, density waves in gravity ...
  • Particle dynamics simulation of gravity driven granular poiseuille flow 
    Chikkadi, Vijayakumar Kudleppa (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2008)
    The gravity-driven flow of granular materials in a vertical channel is simulated us- ing molecular dynamics technique. The granular particles are modelled as smooth hard disks, so the simulations are performed in two ...
  • Pattern formation and anomalous modes in axisymmetic, compressible Taylor-Couette Flow 
    Aghor, Pratik (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2018-04-23)
    Taylor-Couette flow is the annular flow between two concentric, differentially rotating cylinders. Figure 1.1 shows the geometry of the setup and is taken from Taylor [39]. Due to its geometric simplicity, this flow has ...
  • Patterns and transport in axisymmetric compressible taylor-couette flow via direct numerical simulations 
    Dhar, Tanumoy (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2020)
    The story of flow between two concentric differentially rotating cylinders started its journey during the twilight years of seventeenth century when Sir Isaac Newton hypothesized the definition of modern day Newtonian ...
  • Plane shock waves in granular gases and regularized moment equations 
    Lakshminarayana Reddy, M.H. (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2016-06-20)
    Granular materials are usually defined to be a collection of large number of discrete, dissipative, solid particles, which are ubiquitous in nature. They are one of the most used materials in the real world after water, ...
  • Rarefied granular gases: correlations, asymptotic expansion and hydrodynamics 
    Rongali, Ramakrishna (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2017-12-01)
    Granular materials are conglomerations of discrete macroscopic particles, which are ubiquitous in our daily lives, whose size can vary from 1 mm to meters to kilometres. They play an important role in applications as ...
  • Studies on buoyancy-induced open flows : plane thermal plume 
    Lakkaraju, Rajaram (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2007)
    In the present thesis, the natural convection flow over a line heat source is studied for the mean flow and the linear stability characteristics at different Prandtl numbers. This flow is purely driven by buoyancy and ...
  • Two problems on driven granular matter: poiseuille and taylor-couette flows 
    Mahajan, Achal (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2016-07-05)
    This dissertation describes the physics of granular particles in two different flow configuration: Poiseuille and Taylor-Couette. In the first part, smooth inelastic disks are allowed to flow under the effect of gravity ...
  • Velocity fluctuation, correlation and rheology in frictional granular shear flow 
    Gayen, Bishakhdatta (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2008)
    The study of granular materials has received a recent upsurge of interest in physics. This has been motivated by both the relevance of such flows to a wide range of industrial and geological processes, and by the realization ...

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