Research Experience

Mentored by Prof. John C. Bischof, University of Minnesota, USA

Sandwich 3ω Sensor” or “Ice crystallisation detector” for Organoids/Tissues:-

Using 3ω Sensor (metal forms) to detect ice crystallization and phase change during vitrification and rewarming of different tissues.

Mathematical Modeling of Heat Transfer in Cryo-preserved Arteries:-

Studying the 1-D model of IONP distribution in vasculature and analyzing the stresses generated in liver arteries and surrounding tissues based upon Comsol computations and analytical solutions.

Cryopreservation of Drosophila :-

Literature Review on Cryopreservation of Drosophila Embryos on the procedure for the permeabilization and cryobiological preservation from Peter Mazur standard protocols.
Analyzing the impact of time period and mixture of Heptane and D-Lemonade in the permeabilization step on overall viability and effectiveness of permeabilization.
Studying the wild type and mutant type embryos by analyzing the age time period effect on each step of protocol and optimising the permeabilization time and age group for overall highest viability.

Organic Rankine Cycle: Investigation of flow behaviour in a steam generator prototype for alcohol-water mixtures See Project Report

This research describes the flow analysis of an ORC steam generator prototype for alcohol-water mixtures using the CFD and FEM simulation tools in Star-CCM+. The ORC Test Facility is located at the EFZN, an energy research center of Lower Saxony at Goslar, Germany.
The project has been performed in three stages. The first stage includes CAD modelling of evaporator in Solid Works.
In second stage, the thermal analysis of evaporator pipes has been performed in Star CCM+ using a Finite Volume mesh.
The last stage comprises of analysis of static as well as thermal stresses in evaporator pipes using a Finite Element mesh.
It is found that Von mises stress in evaporator pipes are well below the yield strength of pipe material thereby providing a room for scaling down the steam generator as required for automotive application.
Also, the temperature field in each of the tube is determined and based upon that the tube in which the liquid ethanol reaches its saturation temperature and changes its phase to vapour has been predicted. The multi-phase flow of ethanol has been studied and liquid-vapor content in evaporator tubes (near exit) has been determined.
Future work includes verification of multi-phase thermal properties and stresses at exit of evaporator and based upon that predicting the possible size reduction of ORC steam generator for automotives.

Development and Performance testing of a flexible heat pipe for spacecraft applications: See Project Report

Mentored by Prof. Sameer Khandekar, Phase Change Thermal Systems Laboratory, Dept. of Mechanical Engineering, IIT Kanpur

Usually satellite or space vehicles carrying the imaging cameras suffer from vibrations which can affect the quality and performance of imaging potential of the space vehicle. So there is an unmet need of 'vibration-free' thermal management of space vehicles and satellites.
Performed a Literature review of Flexible Heat Pipes and Bellow: flexible component of heat pipe. Theoretically modeled the axial, angular and lateral stiffness of bellow and computed it for our dimensions of flexible heat pipe.
Performed experiment along with FEM simulation in Autodesk Inventor and benchmarked the results with theoretical model predictions for stiffness.
Analysed the sensitivity of Flexural rigidity and critical buckling pressure with respect to geometric parameters of bellow using MATLAB
Calculated stresses occurring in bellow theoretically as per EJMA standard and compared it with FEM simulation results.
Designed the thickness of bellow for a given inside pressure in the heat pipe using stiffness and yield stress criterion.
The research was a part of bigger ISRO project given to Phase change Thermal Systems Laboratory IITK.