Varun Kumar, Ph.D

Product Engineer

Stockholm, Stockholm County, Sweden9 yrs 9 mos experience
Highly Stable

Key Highlights

  • PhD in Mechanical Engineering with a focus on multiphysics.
  • Expertise in CFD modeling and experimental validation.
  • Proven track record in enhancing thermal-fluid systems.
Stackforce AI infers this person is a specialist in Scientific Research and Engineering, focusing on Thermal-Fluid Systems and Microfluidics.

Contact

Skills

Core Skills

Multiphysics SimulationCfd ModelingThermal-fluid SystemsThermal-fluid EngineeringCfd SimulationMechanical EngineeringThermal System DesignProduct Development

Other Skills

Computational Fluid Dynamics (CFD)COMSOL MultiphysicsDevice Design & Multiphysics SimulationCAD ToolsEquipment DesignMechanical Product DesignStrömningsmekanik / CFDVärmeöverföringStrömningsdynamikJigs and FixturesSystems ModelingExhaust gas systemProcess controlUltrasound waveProject Management

About

Mechanical Engineering PhD with expertise in multiphysics transport phenomena, focusing on systems where fluid flow, heat transfer, multiphase behaviour, and field-driven forces interact. My work combines CFD and multiphysics modeling with experimental validation to understand and engineer fluid systems influenced by acoustic, electrohydrodynamic, and thermal forces. I study coupled transport processes in multiphase and inhomogeneous fluids, analyzing how interacting physical fields affect flow stability, interfacial dynamics, and transport across micro- and mesoscale systems. My models are used to predict system behaviour and guide device design with strong simulation–experiment agreement. Across projects, I work across the full engineering cycle: • Multiphysics simulation and CFD modeling • Thermal and microfluidic system design • Device fabrication and experimental testing • Data analysis and performance validation My work spans multiphase fluid systems, thermal transport, field-driven flows, and scientific instrumentation, translating physical insight into working devices and measurable performance improvements. Key interests • Thermal management and compact cooling systems • Multiphase and multiphysics transport • Fluid and heat transfer modeling • Microfluidic and lab-on-chip technologies • Advanced R&D and scientific instrumentation Currently exploring industry roles where multiphysics simulation and thermal-fluid engineering enable high-performance technologies.

Experience

9 yrs 9 mos
Total Experience
1 yr 11 mos
Average Tenure
--
Current Experience

Kth royal institute of technology

Postdoctoral Researcher - Microfluidic Systems & Multiphysics Simulation

Feb 2024Feb 2026 · 2 yrs · Stockholm County, Sweden

  • Led development of an acoustofluidic sample-delivery system integrating CFD modeling, acoustic field simulation, and microfluidic device design.
  • Developed multiphysics COMSOL models to simulate fluid-acoustic interactions and optimize particle alignment within microchannels.
  • Achieved >3× improvement in crystal indexing efficiency and >50% reduction in sample consumption, improving throughput in synchrotron experiments.
  • Designed microfluidic systems and validated performance using high-resolution microscopy and experimental flow analysis.
  • Collaborated with interdisciplinary teams across physics, bioengineering, and instrumentation to translate simulation results into functional experimental devices.
Computational Fluid Dynamics (CFD)COMSOL MultiphysicsMultiphysics SimulationCFD Modeling

Indian institute of information technology design & manufacturing kancheepuram

Graduate Researcher - Thermal-Fluid Systems & Multiphysics Simulation

Jan 2020Jan 2024 · 4 yrs · Chennai, Tamil Nadu, India

  • Developed simulation models for acoustic-driven fluid transport and heat transfer enhancement in microchannels.
  • Built CFD and multiphysics models in COMSOL to study droplet transport, acoustic streaming, and thermal convection behavior.
  • Demonstrated up to 10× enhancement in convective heat transfer through acoustically induced flow fields.
  • Designed and fabricated bulk acoustic wave microfluidic devices to validate theoretical predictions experimentally.
  • Integrated numerical modeling, analytical methods, and experimental validation to enable predictive design of microfluidic systems.
Computational Fluid Dynamics (CFD)Device Design & Multiphysics SimulationThermal-Fluid SystemsMultiphysics Simulation

B s abdur rahman university of science and technology

Assistant Professor - Thermal-Fluid Engineering

Jul 2017Dec 2019 · 2 yrs 5 mos · Chennai Area, India · On-site

  • Taught undergraduate courses in fluid mechanics, heat transfer, and thermal sciences.
  • Led laboratory sessions involving thermal systems and experimental fluid mechanics.
  • Supervised engineering projects focused on CFD simulation and heat transfer analysis.
Device Design & Multiphysics SimulationCAD ToolsThermal-Fluid EngineeringCFD Simulation

Real machine works

Mechanical Engineer

Jul 2013May 2014 · 10 mos · Coimbatore, Tamil Nadu, India · On-site

  • Assisted in the design and fabrication of a hospital incinerator system, including chimney and exhaust ducting structures for safe disposal of medical waste.
  • Performed airflow and draft calculations to ensure proper exhaust flow and efficient combustion gas removal through the chimney stack.
  • Contributed to mechanical design and fabrication planning, including material selection, structural layout, and assembly considerations.
  • Coordinated with fabrication technicians and welders during manufacturing and installation of the incinerator chimney structure to ensure correct alignment and safe exhaust flow operation.
Equipment DesignThermal System DesignMechanical Engineering

Hindustan national glass & industries limited.

Internship

Sep 2012Mar 2013 · 6 mos · Pondicherry

  • Designed and developed a prototype machining fixture for container glass mold production, enabling multiple machining operations on a single setup.
  • Engineered the fixture to support slotting, drilling, and reaming operations, eliminating the need for separate fixtures across different machines.
  • Proposed the fixture concept to improve manufacturing workflow efficiency and setup flexibility within the mold production line.
  • Developed the fixture layout and prototype concept in collaboration with shop-floor engineers and machining technicians.
  • The prototype design was reviewed and appreciated by the engineering team for its potential to simplify machining operations and reduce tooling changeovers.
CAD ToolsMechanical Product DesignMechanical EngineeringProduct Development

Education

Indian Institute of Information Technology Design & Manufacturing Kancheepuram

Doctor of Philosophy - PhD — Mechanical Engineering

Jan 2020Oct 2023

Indian Institute of Information Technology Design & Manufacturing Kancheepuram

Master's degree — Mechanical Engineering

Jul 2015Apr 2017

Anna University Chennai

Bachelor of Engineering (B.E.) — Mechanical Engineering

Aug 2009Jun 2013

Graduate Engineering Preparation (GATE) - Independent study

Jun 2014Mar 2015

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