• Complex flows of complex fluids - Linear instability of dilute polymer solutions and stochastic dynamics of run-and-tumble particles and bacterial suspensions 

  Garg, Piyush (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit, 2023-10)

  Abstract not available
• Dynamics of turbulent viscoelastic jets and settling discs in stratified medium 

  S, Adharsh (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2023-10)

  Abstract not available
• 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
• Study of thermal structure and fog episodes in the nocturnal boundary layer: numerical simulations and satellite observations 

  Rafiuddin, Mohammad (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2022-02)

  Abstract not available
• A novel mini pressure swing adsorption plant for oxygen concentration 

  Das, Ritwik (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit, 2023-05)

  The second wave of COVID-19 led to a severe scarcity of medical oxygen in the country, as cryogenic distillation plants could not entirely meet the exigent oxygen requirements for medical usage. Consequently, there has ...
• A diffuse-interface analysis of two-phase thermo-convective instabilities 

  Mishra, Saumyakanta (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2022-08)

  Two-phase flows are ubiquitous in natural and industrial settings. In the present work, we have developed a general ‘one-fluid’ diffuse-interface model suitable for various two-phase flow problems. The specific two-phase ...
• Motion of anisotropic particles in: sedimentation, uni-directional shear flows and turbulence 

  Anand, Prateek (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2022-09)

  This thesis broadly deals with inertial effects on the motion of passive anisotropic particles and can be divided into four parts. Orientation dynamics of spheroids settling in turbulence The first part of the thesis ...
• Fluid drift and spheroid rotation in viscous density stratified fluids 

  Varanasi, Arun Kumar (Jawaharlal Nehru Centre for Advanced Scientific ResearchEMU, 2022-04)

  This thesis broadly deals with the motion of passive particles in density stratified fluids inthe viscous limit and can be divided into two parts. The first part is concerned with theevaluation of the drift volume, as ...
• Micro-meso coupling for hydrodynamic simulations 

  Chandran, Akshay (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2021-11)

  We present a particle-continuum coupling for simulations in the laminar and turbulent flow regimes. The two-way coupling in the hybrid model is achieved via a direct Simulation Monte Carlo layer near walls and a ...
• Convective transport from drops in complex shearing flows 

  V N, Sabarish (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2021-07)

  This work broadly deals with transport in two-phase systems. The two-phase system of direct rele- vance to this study is an emulsion, where one of the phases is dispersed as droplets in the other (ambi- ent/continuous) ...
• Fractional flow reserve and the diagnosis of coronary artery disease 

  Bohra, Akanksha (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2020)

  Coronary artery disease (CAD) is a widespread cardiovascular illness that causes high rates of mortality all around the world (World Health Organization 2016; Kaptoge et al. 2019). The diagnosis of coronary artery disease ...
• The flow topology around anisotropic particles in planar shearing flows and discretization of stochastic partial differential equations 

  Banerjee, Mahan Raj (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2021)

  In the Stokesian limit, the streamline topology around a single neutrally buoyant sphere is identical to the topology of pair-sphere pathlines, both in an ambient simple shear flow. In both cases there are fore-aft ...
• Enhancing CFL barrier for transient systems 

  Soni, Nishant (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2020)

  A number of scientific and engineering systems are governed by PDEs which have solutions comprising wide range of spatial and temporal scales. The accompanying details can only be captured by high-fidelity simulations on ...
• 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 ...
• The effect of polymer solutions on reverse flow in a pipe & vortex rings 

  Shashank, H. J. (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit, 2020)

  This thesis is focused on the effect of polymer solutions on two caricature flows, namely the instability in a pipe with reverse flow and vortex rings. These caricature flows are intended to be representative of the wall ...
• Swimmer suspensions: fluctuations, microstructure and rheology 

  Nambiar, Sankalp (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2020)

  The research reported in the thesis principally concerns the microstructure and rheology of a suspension of rear-actuated microswimmers. A typical pusher consists of a head (or the cell body) and a tail that may include ...
• Instabilities of rotating liquid columns and orientation dynamics of spheroids in shearing flows 

  Kumar Dubey, Pulkit (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2020)

  As suggested by the title, the research reported in this thesis concerns two problems. The first (and main) part of the thesis, which consists of Chapters 1 and 2, concerns the surface-tension-driven instability of ...
• Synchronized PIV-PLIF experiments on mixing in confined space by a decelerating, turbulent, buoyant jet 

  Prince John, Albin (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2019)

  Turbulent jets of miscible uids of di erent densities are commonly observed in natural and industrial ows. In these type of ows, the di erence in densities causes a buoyancy driven convection along with the momentum ...
• Essentially entropic lattice Boltzmann model 

  Atif, Mohammad (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2019)

  Fluid ows are constitutive to a wide variety of scienti c and engineering problems, owing to the fact that they encompass a vast range of spatial and temporal scales. An accurate prediction of the uid ow has ...
• The Ramdas layer remains a micro-meteorological puzzle 

  Ponnulakshmi, V.K. (Jawaharlal Nehru Centre for Advanced Scientific ResearchEngineering Mechanics Unit (EMU), 2009)

  We demonstrate here that the origin of the Ramdas layer or the lifted temperature minimum(LTM), first observed by Ramdas and co-workers in the 1930’s ([21]) still remains a mystery. A recent theory ([2]) that purports ...

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