Jyotirmay Banerjee

Jyotirmay Banerjee
Sardar Vallabhbhai National Institute of Technology | SVNIT · Department Of Mechanical Engineering

Doctor of Philosophy

About

204
Publications
56,652
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2,298
Citations
Citations since 2016
118 Research Items
2014 Citations
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500

Publications

Publications (204)
Article
A thin liquid sheet flowing under the effect of gravity, subjected to one-sided confinement, generates considerable oscillations. These oscillations (called nappe oscillations) are incidental to interaction of liquid sheet with the air enclosure present within the confinement. In this regard, a numerical study is presented here involving parametric...
Conference Paper
Centrifugal blowers are commonly used for heating and ventilation applications. Centrifugal fan is a kind of fluid machinery for energy conversion used in industrial engineering with huge energy consumption. The impeller is the core component of a centrifugal fan, and the performance of the impeller determines the performance of the fan. High-press...
Chapter
Intermittent flow patterns are one of the key responsible two-phase flow patterns for generation of severe erosion-corrosion problems inside the piping system. These problems lead to large catastrophic failures of piping in industries. Thus, intermittent slug and plug type of patterns have made the researchers to study and estimate the flow charact...
Article
The influence of wave height on the dynamics of a turbulent round jet is analyzed using direct numerical simulation (DNS). The vortex dynamics associated with the interaction of jet with waves of different wave height is compared using the swirling strength criterion and the contours of vorticity. An analysis of the vortex roll-up frequency reveals...
Chapter
One of the renewable energy devices in development is the oscillating water column (OWC) which utilizes the movement of ocean waves on a partly immersed section consisting of air–water subsections to harvest ocean wave energy. Several critical parameters such as pressure and free surface velocity, along with free surface elevation control the effic...
Chapter
Continuous miniaturization of the engineering applications and growing demand for their performance require an effective and compact cooling system. Boiling flow or evaporating flow has excellent potential to fulfill those requirements. Boiling flow transfers three to four times more heat compared to a single-phase flow system, mainly due to the fo...
Chapter
In gas–liquid two-phase horizontal pipe flow, several types of flow regimes are found; one of them is the intermittent flow regime associated with pressure fluctuations in the pipeline. The slug flow regime occurs in a pipeline when a wavy interface already exists, and the wave-breaking phenomenon occurs. The formation of slugs can cause oil and ga...
Article
Direct numerical simulation of the round jet released in regular waves has been reported. Evolution of the vortical structures during initial and long term evolution of the jet has been studied with the help of the swirling strength criterion. During an initial evolution of the jet, the vortex roll-up and emergence of secondary instability have bee...
Article
The falling liquid curtain at a low-head condition subjected to an air-cushion on one side develops longitudinal oscillations. These oscillations can generate considerable sound energy that can induce vibrations in the nearby structures. Thus, stability analysis and flow visualization of these liquid sheets is vital for safeguarding the structures...
Preprint
Full-text available
The falling liquid curtain at a low-head condition subjected to an air-cushion on one side develops longitudinal oscillations. These oscillations can generate considerable sound energy that can induce vibrations in the nearby structures. Thus, stability analysis and flow visualization of these liquid sheets is vital for safeguarding the structures...
Article
Waste water from coastal cities and industries, brine from desalination plants and cooling water from coastal power plants is usually discharged into the receiving water of the ocean from an ocean outfall in the form of a turbulent jet. Discharge of the turbulent jet through an ocean outfall can be modeled as a jet discharged in the wave environmen...
Article
Slug is produced when the roll waves on the liquid surface undergo constructive interference and the resulting wave height increases beyond the critical height. Slug flow is associated with large aeration that develops a sudden surge in pressure and associated mechanical impact on pipe wall and bends. Such phenomena lead to flow accelerated corrosi...
Chapter
Modern gas turbine combustors are required to provide high combustion efficiency, stability over wide range of operating conditions and fuel flexibility while meeting strict low emission norms, with other requirements such as low heat loads on combustor liner wall. One of the promising ways to meet such requirements is the provision of swirler. In...
Conference Paper
The proper discretization of the convective terms in the Navier–Stokes equations is critical for the accurate numerical solution. The use of higher-order schemes tends to cause numerical dispersion. Hence, the present work tries to study the stabilizing effects of the lower-order scheme when blended with the higher-order schemes. This is demonstrat...
Article
Full-text available
Direct numerical simulation of a turbulent round jet subjected to the varicose excitation has been carried out. The effect of domain size and waveform used for providing varicose excitation have been studied with the help of time averaged mean, fluctuating quantities and instantaneous isosurfaces of the Q-criterion. Initial evolution of the jet sug...
Preprint
Full-text available
Slug is produced when the roll waves on the liquid surface undergo constructive interference and the resulting wave height increases beyond the critical height. Slug flow is associated with large aeration that develops a sudden surge in pressure and associated mechanical impact on pipe wall and bends. Such phenomena lead to flow accelerated corrosi...
Article
A comprehensive experimental analysis is reported to estimate the heat transfer enhancement in concentric tube type Latent Heat Storage Unit (LHSU) using spiral fins. An angle adjuster is provided in the experimental test facility to facilitate orienting the LHSU at different angles i.e. vertical (θ = 90°), horizontal (θ = 0°) and inclined (θ = 45°...
Preprint
A comprehensive experimental analysis is reported to estimate the heat transfer enhancement in concentric tube type Latent Heat Storage Unit (LHSU) using spiral fins. An angle adjuster is provided in the experimental test facility to facilitate orienting the LHSU at different angles i.e. vertical (θ = 90°), horizontal (θ = 0°) and inclined (θ = 45°...
Article
Full-text available
Understanding the behavior of oscillating liquid jets in tandem is vital for improving the efficacy of numerous industrial applications. An interpretation of their behavior in the terms of development, associated instability, and interactions when used in tandem remains unclear. Therefore, the present study reports the numerical investigations on s...
Article
Full-text available
Two-phase flow has a wide range of application from petroleum to space industry. Gas-liquid two-phase flow in horizontal pipe commonly occurs in petro-chemical, nuclear and geothermal industry, where simultaneously gas and liquid are transported through pipelines. During the transportation of gas-liquid flow simultaneously, due to the interaction o...
Article
Vigorous aeration and instantaneous pressure fluctuations associated with intermittent flow cause severe erosion-corrosion in the piping systems which lead to material degradation or wall thinning and leakages. Sometimes, this phenomenon results in catastrophic failures and hazards in transportation pipelines for industries such as petroleum, nucle...
Conference Paper
Full-text available
The liquid jet under certain conditions when perturbed will lead to instability. The understanding about an effect of confinement on these jets is still obscure. Hence, numerical investigations are reported in the present study for two phase spatially oscillating planar jet in a quiescent air under the confined conditions. Simulations are performed...
Conference Paper
Full-text available
The present work demonstrates the qualitative and quantitative comparison between high-resolution algebraic interface-capturing schemes applied to volume of fluid (VOF) method. Basic Compressive Interface-Capturing Scheme for Arbitrary Meshes (B-CICSAM), Modified Compressive Interface-Capturing Scheme for Arbitrary Meshes (M-CICSAM), Flux-Blending...
Article
Full-text available
The fidelity of an advection-dominant numerical solution is significantly affected by the order of approximation applied for the given scalar. Numerical schemes that apply this approximation are generally prone to dissipative and dispersive errors while capturing sharp discontinuities in the scalar values. Hence, the present study introduces the Fr...
Article
Phase change material (PCM) shows excellent potential to prevent heat gain and reduce the cooling load of buildings. However, the selection of suitable PCM for a given climatic condition becomes important for the effective thermal performance of the building envelope. In the present work, based on the key thermal responses i.e. total heat gain, tim...
Chapter
Gas–liquid two-phase flow is commonly observed in petroleum and chemical industries. Stratified flow pattern is simpler form of gas–liquid two-phase flow in which higher density fluid flows under the lower density fluid with non-disturbed interface. Small alteration of flow rate, chemical and physical properties of phases and pipe orientation or ge...
Article
Recurrence analysis of pressure signals measured from the pipe wall simultaneously with flow visualization is used to depict a methodology for identifying intermittent flow sub-regimes through opaque pipes. Pressure signal alone is not sufficient to differentiate two-phase flow regimes in an opaque pipe. Hence, the phase space trajectory of pressur...
Chapter
There is a growing demand for high-performance cooling. Two-phase flow through microchannels involving phase change (thin-film evaporation) is one of the prospective techniques for high-performance cooling. Liquid film thickness is a prominent parameter in the study of thin-film evaporation. Measurement of film thickness in macro-, mini-, and micro...
Article
This study aims to develop a machine learning and deep learning-based model for thermal performance prediction of PCM integrated roof building. Performance prediction is carried out using the newly proposed MKR index. Five machine learning and one deep learning technique are explored in order to predict the thermal performance of PCM integrated roo...
Article
Aeration in slug and associated secondary flow leads to surging of pressure and erosion corrosion in pipe. Surging of pressure develops high mechanical impact on the pipe, and erosion corrosion reduces the thickness of internal wall, thereby resulting in pipe failure. To explore the phenomena of aeration in slug, flow visualization analysis is repo...
Article
Interfacial behaviour of stratified and wavy-stratified flow is analysed in terms of measured velocity signals in liquid phase using Laser Doppler Velocimetry. Measurement of liquid height (interface level) is achieved using Laser Doppler Velocimetry synchronized with a computerised 3-dimensional traverse system. The precision obtained in measureme...
Book
This book comprises select proceedings of the 46th National Conference on Fluid Mechanics and Fluid Power (FMFP 2019). The contents of this book focus on aerodynamics and flow control, computational fluid dynamics, fluid structure interaction, noise and aero-acoustics, unsteady and pulsating flows, vortex dynamics, nuclear thermal hydraulics, heat...
Preprint
Full-text available
Aeration in slug and associated secondary flow leads to surging of pressure and erosion corrosion in pipe. Surging of pressure develops high mechanical impact on the pipe and erosion-corrosion reduces the thickness of internal wall thereby resulting pipe failure. To explore the phenomena of aeration in slug, flow visualization analysis is reported...
Conference Paper
Intermittent flow patterns are one of the key responsible two-phase flow patterns for generation of severe erosion-corrosion problems inside the piping system. These problems lead to large catastrophic failures of piping in industries. Thus, intermittent slug and plug type of patterns have made the researchers to study and estimate the flow charact...
Conference Paper
Combustion and emission characteristics of an upward swirl Can combustor are examined for hydrogen enriched methane fuels. Large Eddy Simulations (LES) are performed to analyse hydrogen addition effects on flame dynamics and chemical kinetics. Emission levels of CO and NOx are experimentally measured for different fuel blends. Under constant energy...
Article
Phase change materials, better known as PCMs, have become an effective energy-efficient building retrofitting technology. The selection of PCM is one of the main aspects that affect the energy consumption of PCM integrated building. In the present study, a new parameter is proposed i.e. Measure of Key Response index for selection of PCM and for sta...
Article
Full-text available
An interface capturing scheme called modified switching technique for advection and capturing of surfaces (MSTACS) has been proposed. The proposed interface capturing scheme utilizes a basic switching technique for advection and capturing of surfaces (STACS) for solution of the volume fraction advection equation. MSTACS has been compared against th...
Article
Full-text available
The momentum transport and entrainment of a developing plane jet are dominated by coherent structures. Percipience about the formation, evolution, and interaction of these coherent structures for oscillating planar jets remains unclear. In the present study, numerical investigations are reported for analyzing spatially oscillating planar jets by so...
Preprint
Full-text available
The momentum transport and entrainment of a developing plane jet is dominated by coherent structures. Percipience about the formation, evolution and interaction of these coherent structures for oscillating planar jet remains unclear. In the present study, numerical investigations are reported for analysing spatially oscillating planar jet by solvin...
Article
Full-text available
A Compressive volume-of-fluid (VOF) schemes exhibit numerical diffusion which inhibit them in obtaining a numerically sharp and wrinkle-free description of fluid interface which is vital for understanding the complex interfacial dynamics. Therefore, the present study introduces a novel compressive VOF scheme capable of capturing sharp abrupt interf...
Article
Full-text available
The charging and discharging rates of a phase change material (PCM) in a horizontal latent heat storage unit (LHSU) is largely influenced by the lower thermal conductivity of the PCM. In the present research, four different configurations of longitudinal fins are proposed to augment the heat transfer in horizontal shell and tube type LHSUs. Numeric...
Thesis
Removal of the droplets from solid surfaces is an essential part of many engineering and biological systems. Digital microfluidics, dropwise condensation, anti corrosion surfaces and wing cleaning in Cicadas are few that can be named. Limitations of conventional droplet removal methods like gravity and vibration entail the development of a new tech...
Conference Paper
Full-text available
Stability analysis of complex two-phase slug flow is carried out by using OpenFOAM (CFD) Open source codes. Flow in symmetrical pipe geometry is simulated using isoAdvector (Geometric algorithm) which uses VOF method to track interactions of two fluids at the interface. Grid-independence is established by choosing liquid holdup as grid sensitivity...
Conference Paper
Gas-liquid two-phase flow is commonly observed in petroleum, chemical industries which are transported through pipelines. Due to intermittent characteristics of slug flow, it surges sudden pressure and mechanical impact on the piping system which enhances the fatigue stress and leads to pipeline failure at bends, T-and I-sections. Thus it is requir...
Conference Paper
Full-text available
Latent heat storage system using phase change materials (PCM) is an efficient way to store thermal energy among all the distinct kinds of thermal energy [2]. It has the advantage of high energy storage density and isothermal storage process. Due to the low thermal conductivity of available PCM, the practical use of latent heat storage is limited in...
Conference Paper
Full-text available
The proper discretization of the convective terms in the Navier-Stokes equations is critical for the accurate numerical solution. Use of higher order schemes tends to cause numerical dispersion. Hence, the present work tries to study the stabilizing effects of the lower order scheme when blended with the higher order schemes. This is demonstrated u...
Article
Full-text available
The liquid jet when perturbed sinusoidally will lead to instability under certain conditions. Understanding of the causes and consequences of such a behaviour is still obscure. Hence, numerical investigations are reported in the present study for two phase spatially oscillating planar jet in a quiescent air. Simulations are performed by solving the...
Preprint
Full-text available
Development of mass-source function based numerical wave tank (NWT) algorithms in the Navier-Stokes(NSE) framework is impeded by multiple design issues such as: (a) optimization of a number of variables characterizing the source region, (b) wave-vorticity interactions and (c) a mandatory requirement of modeling the domain on both sides of the wavem...
Preprint
Full-text available
The liquid jet when perturbed sinusoidally will lead to instability under certain conditions. Understanding of the causes and consequences of such a behaviour is still obscure. Hence, numerical investigations are reported in the present study for two phase spatially oscillating planar jet in a quiescent air. Simulations are performed by solving the...
Conference Paper
Full-text available
Practical use of Latent Heat Storage Unit (LHSU) is limited due to poor thermal conductivity of Phase Change Material (PCM). Present research is focused on acceleration of the charging process of LHSU using different arrangement of HTF tubes. Numerical analysis is reported for estimation of thermal performance of horizontal shell and tube type late...
Article
Full-text available
Direct numerical simulation (DNS) of transitional and turbulent round jets is reported in a comparative framework. Such comparison is central towards revealing the roles that molecular viscosity and vorticity intensification play in the evolution of jets. The initial and intermediate evolution is differentiated based on assessment of the starting j...
Article
An experimental investigation is reported to establish the influence of orientation on thermal behaviour of phase change material (PCM) in a shell and tube type Latent Heat Storage Unit (LHSU). An angle adjuster is provided in the experimental test facility to orient the LHSU at different angles. Stearic acid is used as PCM (melting point -55.7 – 5...
Article
Employment of latent heat storage unit (LHSU) utilizing phase change material (PCM) in a substantial scale is constrained by the poor thermal conductivity of PCMs. Future utilization of LHSU will therefore to a great extent rely on the heat transfer intensification techniques. Present research is on enhancement techniques in which heat transfer mec...
Article
A comparative thermal performance assessment is reported for vertical and horizontal orientation of shell and tube type Latent Heat Storage Unit (LHSU) using stearic acid (melting point of 55.7–56.6 °C) as Phase Change Material (PCM) and water as Heat Transfer Fluid (HTF). Total 45 thermocouples are used in radial, axial and angular directions to m...
Article
Full-text available
A high-resolution, Navier–Stokes solver is developed for direct numerical simulation (DNS) of free shear flow. All terms in Navier–Stokes equations are discretized using higher order methods. Diffusion term is discretized using fourth order central difference scheme while second order Adams–Bashforth is used for time derivative. Advecting velocity...
Conference Paper
Full-text available
Use of Latent Heat Storage Units (LHSUs) using the Phase Change Materials (PCMs) attracted due to their ability to store/retrieve the energy. Thus, energy demand and energy supply becomes equivalent during the peak energy demands. The main objective of present investigation is to improve the heat transfer of horizontal shell and tube type Latent He...
Chapter
Full-text available
State of the art in numerical wave tank (NWT) development demands that emerging algorithms be capable of utilizing most of the computing power available from today’s multi-core CPU architectures. Based on this motivation, we attempt MPI-based parallelization of our (in-house) Navier–Stokes equation (NSE)-based NWT algorithm. Parallelization strateg...
Conference Paper
Full-text available
An experimental investigation is reported to analyse the thermal behaviour of phase change material (PCM) in shell and tube type latent heat storage unit (LHSU) under different orientation (90°, 75°, 60°and 45°). PCM temperature in radial, axial and angular direction is measured using 45 thermocouples. Stearic acid (melting point between 55.7°C and...
Conference Paper
Full-text available
Breaking of gravity waves over the ocean surface induces conversion of large amounts of packet energy into turbulence kinetic energy. Breaking-induced sub-processes have far-reaching effects on Earth’s environment, coastal morphodynamics, remote sensing as well as on strategies adopted for designing marine structures and marine renewable energy dev...
Conference Paper
Gas-liquid two-phase flow in general exhibits separated, intermittent and dispersed flow patterns. Intermittent flow patterns (which include slug and plug flow) develops large pressure at the wall and bends and can lead to failure of pipe. Thus identification of such flows is very important. In this work, recurrence technique is proposed as a tool...
Conference Paper
Full-text available
Direct numerical simulation of round jet using a truncated computational domain requires use of convective boundary condition at the outlet. Selection of the convective phase velocity in the boundary condition is a crucial task since reflections need to be avoided at the outlet. In the present work, a convective outlet boundary condition that adjus...
Conference Paper
Full-text available
Complex two-phase flow patterns are captured using OpenFOAM. Stratified, stratified wavy, plug and slug flows in horizontal pipelines are analyzed with interFoam as a solver. Grid independence analysis is carried out using liquid holdup and velocity profile for stratified flow as the grid sensitivity parameter. Five different cases of stratified fl...
Article
Full-text available
Inconsistent implementation of surface tension in an interfacial solver for incompressible two-phase flow results in spurious currents near the interface. The balanced force algorithm (BFA) enforces consistent implementation of surface tension force and pressure gradient at the cell faces thereby generating conservative face center velocity field,...
Conference Paper
Upward swirl philosophy in gas turbine combustor succeeds in achieving low liner wall temperature and NOx emission. However, excessive amount of air for liner wall cooling cause low combustion efficiency resulting in to large amount of CO emission. In the ex-isting combustor, combustion air is distributed through swirler and one row of dilution air...
Article
The present research aims to assess the potential of hydrogen in the form of a supplementary fuel to accelerate combustion chemistry and reduce CO emissions of methane fuelled upward swirl gas turbine combustor. Effects of hydrogen enrichment on flame characteristics and chemical kinetics are analysed using Large Eddy Simulations (LES). Flame visua...
Conference Paper
Full-text available
State-of-the-art in numerical wave tank (NWT) development demands that emerging algorithms be capable of utilizing most of the computing power available from today’s multi-core CPU architectures. Based on this motivation, we attempt MPI-based parallelization of our (in-house) Navier-Stokes (NSE) based NWT algorithm. Parallelization strategy adopted...
Conference Paper
Full-text available
Flow visualization experiments are reported in present paper for analysing the mechanisms that lead to asymmetrical distributions of void fraction inside the liquid slug. These mechanisms include bubbles detachment from slug bubble tail, bubbles breakup, bubbles collisions, bubbles coalescence, and bubbles agglomeration near the following slug bubb...
Article
Relative assessment of thermal and emission characteristics of conventional and reverse air flow CAN type gas turbine combustor is reported. Large Eddy Simulations (LES) are carried out with Wall Adaptive Local Eddy (WALE)viscosity modelforsubgridscalestresses. Turbulence-chemistry interactionis modelledusingpresumed shape Probability Density Functi...