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About me

Highly self-motivated and passionate Mechanical Thermal Engineer specializing in Thermal Engineering, Computational Fluid Dynamics, Finite Element Analysis, Research and New Product Development.

Professional Skills
CFD | FEA | CAD | Mechanical Design | HVAC  design

Mechanical Design Tools
SolidWorks | AutoCAD | REVIT

FEA & CFD
HyperMesh | Ansys Workbench | SolidWorks Simulations | Ansys Fluent | StarCCM+ | OpenFoam | Simscale | Pointwise | ICEM CFD

EDUCATION

Bachelors in Technology

Mechanical Engineering

Experience

Research and Publications

Bubble Growth in Supersaturated Liquids (MDPI Fluids, 2022)
Bubble formation and dissolution have a wide range of industrial applications, from the production of beverages to foam manufacturing processes. The rate at which the bubble expands or contracts has a significant effect on these processes. In the current work, the hydrodynamics of an isolated bubble expanding due to mass transfer in a pool of supersaturated gas–liquid solution is investigated. The complete scalar transportation equation (advection–diffusion) is solved numerically. It is observed that the present model accurately predicted bubble growth when compared with existing approximated models and experiments. The effect of gas–liquid solution parameters such as inertia, viscosity, surface tension, diffusion coefficient, system pressure, and solubility of the gas has been investigated. It is found that the surface tension and inertia have a very minimal effect during the bubble expansion. However, it is observed that the viscosity, system pressure, diffusion, and solubility have a considerable effect on bubble growth.
Keywords: Bubble hydrodynamics, bubble growth in the foaming process, mass transfer growth, supersaturated liquids, inertial growth, numerical solution to advection-diffusion equation, moving interface
        
 
Experimental heat transfer investigations of a double pipe U-tube heat exchanger equipped with twisted tape and cut twisted tape internals (AIP Conference Proceedings, 2021)

For several decades, the use of heat exchangers for both heating and cooling applications has been established in industries ranging from process to space heating. Out of the various types of heat exchangers, U-tube heat exchangers are preferred owing to their abilities to handle larger flowrates and their simplicity in construction. U-tube exchangers are often equipped with innards of various forms which facilitate higher heat transfer rates and thermal efficiencies. Although higher heat transfer rates have been established with the addition of internals, there is a lack of coherence on the underlying complex physical phenomena such as heat transfer boundary layers and turbulence characteristics. In the current study, the effect of twisted and cut-twisted tape inserts on heat transfer enhancement and pressure drop in a counter flow double pipe U-tube heat exchanger has been investigated using experimental approach. This has been compared with bare tubes in the absence of internals. Physical parameters such as heat transfer rate, pressure drop, Nusselt number are determined for a range of mass flow rates

Click here to download the full paper

The Study of Bubble Growth Hydrodynamics in the Supersaturated Liquids (Western University Thesis, 2020)

Bubble formation and dissolution have a wide range of industrial applications, from the production of beverages to foam manufacturing processes. The rate at which the bubble expands or contracts has a significant effect on these processes. In the current work, the hydrodynamics of an isolated bubble expanding due to mass transfer in a pool of supersaturated gas-liquid solution is investigated. The complete scalar transportation equation (advection-diffusion) is solved numerically and it has been observed that the present model predicted an accurate bubble growth when compared with existing approximated models and experiments. The effect of gas-liquid solution parameters such as inertia, viscosity, surface tension, diffusion coefficient, system pressure, and solubility of the gas has been investigated. It is found that the surface tension and inertia have a very minimal effect during the bubble expansion. However, it is observed that the viscosity, system pressure, diffusion, and solubility have a considerable effect on bubble growth.

Keywords: Bubble hydrodynamics, bubble growth in the foaming process, mass transfer growth, supersaturated liquids, inertial growth, numerical solution to advection-diffusion equation, moving interface

Click here to download the full paper 

Portfolio

People Say about me

” Raj was a very detail-oriented and attentive professional. He got along very well with the team and excelled very quickly in his role. His time may have been short with us but he quickly became an invaluable team member. His knowledge and professional experience will be able to give him lots of career opportunities ”

GRAHAM     D ARBY, P.ENG

Mechanical Engineering Analyst | Dematic

” I was Raj’s co-supervisor during his Master’s studies at Western. Over the time that I worked with Raj, he has developed himself into an excellent engineer, through constant hard work and determination. His level of knowledge of numerical methods (e.g. computational fluid dynamics, differential equations) has been developed to an exceptional level. Not only does he have excellent analytical skills, but he is also a pleasure to work with. He has a genuine scientific curiosity that I am sure is going to serve him very well in his career ”

” I was Raj’s co-supervisor during his Master’s studies at Western. Over the time that I worked with Raj, he has developed himself into an excellent engineer, through constant hard work and determination. His level of knowledge of numerical methods (e.g. computational fluid dynamics, differential equations) has been developed to an exceptional level. Not only does he have excellent analytical skills, but he is also a pleasure to work with. He has a genuine scientific curiosity that I am sure is going to serve him very well in his career ”

C H R I S     D E G R O O T

CEO-Maple Key Labs | Assistant Professor, Western University

” I was Raj’s colleague here at Western in our Thermo-fluids research group. Over many discussions that we had during our time here together, Raj developed very good understanding of the fundamental principles of fluid mechanics and heat transfer and its application towards real life engineering problems. In addition to it, he is excellent with CFD design tools (ANSYS), design (SolidWorks) and data analysis (MATLAB). I am sure Raj will be an asset to any team that he works with. I wish him all the best for his future endeavors ”

D W A I P A YA N     S A R K A R

Phd research fellow, R&D intern at Acrolab Ltd | Western University

”I have known Raj since the start of my graduate study at Western University, Canada. We have worked together on a couple of academic research projects comprising of Computational Fluid Dynamics (CFD), meshing, numerical and analytical problems. Raj has a superior understanding of fluid dynamics and related transport phenomena. He has an outstanding knowledge on the use of CFD tools – ANSYS package, StarCCM+, and OpenFoam. Furthermore, he possesses a good grasp of the use of CAD tools like SolidWorks and programming. I have seen him progressively improving his skillset over the course I have worked with him. I am confident that the blend of his interpersonal skills, team leadership, and technical expertise would be a boon to any organization. Wishing him the best for all his future goals and aspirations ”

G L E N     D S O U Z A

Doctoral Researcher at Industrial Bioproduct Laboratory | Western University