Srinivas Vanapalli’s  academic roots are from the Indian Institute of Technology, Madras with a bachelor degree in Mechanical Engineering. He later received an electrical engineering  master’s degree (cum laude) from the University of Twente. He received his PhD title for 'High frequency operation and miniaturization aspects of cryocoolers' at UT, a major part of this work is carried out at the National Institute of Standards and Technology, Boulder, USA.

Srini has a mix of industrial and academic experience and has worked so far in three continents. His research interest is cryogenics where disciplines thermodynamics, material sciences, fluid, and heat transfer meet. He received the 2019 Mulholland award for excellence in cryogenic engineering which is given to recognize significant achievement in a particular areas of cryogenics.

Srini leads the Applied Thermal Sciences lab within the Energy Materials and Systems cluster where his team explores fundamentals and applications of thermal sciences in both space and time domains. The core competence of his group is heat and mass transfer phenomena in the cryogenic temperature range from 200 K to 4 K.  His approach combines formulation of conceptual models, experiments, and numeric. The topics of his research are problem-driven and his team seek to solve grand societal challenges related to energy and life sciences.

For more info about Srinivas Vanapalli on the 'Featured Scientists' page, click below:

Expertise

  • Physics

    • Temperature
    • Cooling
    • Heat
    • Gaseous State
    • Ice
    • Liquid Nitrogen
    • Performance
  • Engineering

    • Microcooler

Organisations

RESEARCH INTERESTS

Cryocoolers: Joule-Thomson and Stirling type

Hydrogen liquefaction and storage: small scale hydrogen liquefiers and storage

Multiphase flow and heat transfer at low temperatures: imbibition of liquid nitrogen in porous media, cryogenic droplet evaporation physics, freeze concentration.

Stirling thermodynamics: Oscillating flow and heat transfer physics

Sublimation physics: Dry Ice (CO2) Leidenfrost layer dynamics, Schlieren imaging of density gradients around dry ice, dry ice sublimation in storage boxes, CO2 thermodynamic sublimation phase diagram for a binary mixture. 

Cryogenics in Applied Lifescience: Cryofixation of biomedical materials, frozen transport, & cryo-handling.

Technology development: Additive manufacturing, Micromachining

 

RESEARCH HIGHLIGHTS

please see the home page of Applied Thermal Sciences lab

Publications

2024
2023
A nitrogen Leidenfrost droplet on a water pool: Experiments, theory and simulations of droplet shrinkage and ice formationInternational journal of heat and mass transfer, 217, Article 124658. Schremb, M., Kalter, M. & Vanapalli, S.https://doi.org/10.1016/j.ijheatmasstransfer.2023.124658Development of a lab-device for evaporation-free supply of pure liquid nitrogen for droplet- and jet-generationScientific reports, 13(1), Article 6421. Schremb, M., Kalter, M. & Vanapalli, S.https://doi.org/10.1038/s41598-023-31955-4A protocol for accurately calibrating thermocouples at cryogenic temperaturesIn CEC-ICMC-2023 - Cryogenic Engineering Conference and International Cryogenic Materials Conference (Accepted/In press). Purandare, A. & Vanapalli, S.Experimental and theoretical investigation of the dry ice sublimation temperature for varying far-field pressure and CO2 concentrationInternational Communications in Heat and Mass Transfer, 148, Article 107042. Purandare, A., Vanapalli, S. & Verbruggen, W.https://doi.org/10.1016/j.icheatmasstransfer.2023.107042Modelling and experiments of dry ice sublimation in an insulation boxIn Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023. (pp. 302-308). Purandare, A. S. & Vanapalli, S.https://doi.org/10.18462/iir.icr.2023.0393Sublimation of a dry ice sphere in a controlled ambient: : Visualization of density gradients at the phase-changing interface. Purandare, A., Wennemars, G. & Vanapalli, S.

Research profiles

What defines me as a teacher?

  • Experiment with better ways to achieve success
  • Value the students and respect them.
  • Inspire students by drawing parallels between the subject matter and students everyday experiences. Also walking through several examples.
  • Belief in mentoring students and showing them the path to learn themselves.
  • Provide thought provoking examples (not just a text book).

Affiliated study programs

Courses academic year 2023/2024

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2022/2023

My research is supported by national, european funding agencies and industry. 

Funding entities: NWO-TTW, EU, TKI-HTSM, TKI-Energy, ZonMW, ESA & Air Liquide

What drives me as a scientist is the exciting wealth of knowledge and surprises I come across in my research, either in the lab or in discussions with my team. We built a little cryogenic fluids playground and often me and my students try things out of curiosity, very often transforming into serious multi-year projects. I believe in sharing this curiosity with the general public and to high-school students, with a hope to ignite the STEM flame in them. My outreach efforts were recognized recently by the MESA+ Dave Blank Outreach Award. 

In the press

News feature in Physicsworld (IOP publishing)

09 July 2020: Why insulated metals cool down faster than their bare counterparts

https://physicsworld.com/a/why-insulated-metals-cool-down-faster-than-their-bare-counterparts/

30 December 2019: Study of liquid-nitrogen droplets gives new insight into cryogenic spray-cooling

https://physicsworld.com/a/study-of-liquid-nitrogen-droplets-gives-new-insight-into-cryogenic-spray-cooling/

 

17 December 2019 UToday: Freeze!

https://www.utoday.nl/science/67723/freeze

August and October 2019 COLDFACTS issue (https://cryogenicsociety.org/cold_facts/)

News on utwente.nl

Mulholland memorial award for Srinivas Vanapalli

Biopsy frozen in seconds in the operating room

Dave Blank Outreach Award to Srinivas Vanapalli

Address

University of Twente

Carré (building no. 15), room C2049
Hallenweg 23
7522 NH Enschede
Netherlands

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