Research
Thermal Management of Electronics
Silicon based microelectronics are likely to be the mainstay of computing for foreseeable future. We are working towards development of new microscale, thermal and fluid transport devices for efficient and on-demand thermal management of high heat dissipating microelectronics, for mobile as well as datacenter applications.
Anand S. (anand.20mez0001@iitrpr.ac.in)
Siddhartha S.S. (saladi.20mez0003@iitrpr.ac.in)
Computational Study
Biomimetic wedge micropillar has been proposed in our recent study for thin-film evaporation applications. The performance of the wedged micropillar geometry has been evaluated by adopting a validated numerical modeling approach involving the integration of unit-cell-based analysis into a one-dimensional device-level model. The model involves the generation of an equilibrium meniscus shape using an energy minimization approach in Surface Evolver and utilizing the resulting shape in unit-cell-based fluid flow and thermal CFD simulations. Subsequently, the results of the unit-cell-based analysis are integrated into a device-level model by linking the unit cells for the prediction of dryout heat flux, average and local effective heat transfer coefficient, and evaporator wall superheat.
Experimental Study
References
Biomimetic Micropillar Wick for Enhanced Thin-Film Evaporation, Anand S, and Chander Shekhar Sharma. Langmuir, 2023, 39(19), pp.6855-6864.
A simplified approach to hotspot alleviation in microprocessors, Chander Shekhar Sharma, Manish K. Tiwari, Dimos Poulikakos. Applied Thermal Engineering, 2016, 93, 1314-1323.
A novel method of energy efficient hotspot-targeted embedded liquid cooling for electronics: An experimental study, Chander Shekhar Sharma, Gerd Schlottig, Thomas Brunschwiler, Manish K. Tiwari, Bruno Michel, Dimos Poulikakos. International Journal of Heat and Mass Transfer, 2015, 88, 684-694.
Energy efficient hotspot-targeted embedded liquid cooling of electronics, Chander Shekhar Sharma, Manish K. Tiwari, Severin Zimmermann, Thomas Brunschwiler, Gerd Schlottig, Bruno Michel, Dimos Poulikakos. Applied Energy, 2015, 138, 414-422.
Thermofluidics and energetics of a manifold microchannel heat sink for electronics with recovered hot water as working fluid, Chander Shekhar Sharma, Manish K. Tiwari, Bruno Michel, Dimos Poulikakos. International Journal of Heat and Mass Transfer, 2013, 58, 135-151.
Optimal thermal operation of liquid-cooled electronic chips, Chander Shekhar Sharma, Severin Zimmermann, Manish K. Tiwari, Bruno Michel, Dimos Poulikakos. International Journal of Heat and Mass Transfer, 2012, 55, 7-8, 1957-1969.
Condensation and Dynamics of Small Droplets
Heterogeneous condensation, i.e. phase change of a fluid from vapor to liquid, is a critical physical process in a range of industrial systems. Our work involves investigations into physics of heterogeneous condensation and its interaction with the surface chemistry and texture. The aim is to achieve efficient condensation by controlling the fluid dynamics of the process as customized towards real world applications.
Gopal Chandra Pal (2018mez0022@iitrpr.ac.in)
Raushan Kumar (2018mez0020@iitrpr.ac.in)
Computational Study
Experimental Study
droplet coalescence on superhydrophobic surface_10fps.aviCoalescence induced droplet jumping over a superhydrophobic surface
Rigid_1060.aviExperimental validation of jumping of droplets with that of the computational observation
la3c02788_si_003.aviDropwise condensation on a planar microgrooved surface at ΔT = 16 K and Tsat = 302 K
la3c02788_si_002.aviDropwise condensation on a hydrophobic microgrooved surface at ΔT = 16 K and Tsat = 302 K
Surface Micro and Nano Texturing
We are working towards developing scalable surfaces micro and nano textures in various materials that allow us to perform controlled micro-thermofluidic investigations and can achieve significant enhancement in microscale thermal transport under realistic operating conditions.
Anand S. (anand.20mez0001@iitrpr.ac.in)
Gopal Chandra Pal (2018mez0022@iitrpr.ac.in)
Raushan Kumar (2018mez0020@iitrpr.ac.in)
Siddhartha S.S. (saladi.20mez0003@iitrpr.ac.in)
Research Collaborations:
HARMoNIC: HierARchical Multiscale NanoInterfaces for enhanced Condensation processes, a multi-university project involving ETH Zurich, Italian Institute of Technology, UCL, Demokritos Greece and Max Planck Mainze
IIT Hyderabad
IIT Kanpur
Funding:
STARS
DST SERB (Core Research Grant)
Indian Institute of Technology Ropar (Institute Seed Research Grant)