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Analysis of ventilation strategies for improved air quality in a classroom using OpenFOAM
Guide: Prof. Janani Murallidharan
The project has been published on CFD FOSSEE website as a case study: FOSSEE Case Study
Air residence time denotes the total time the air particles have spent inside a control volume. Analysis of a room’s ventilation in terms of air residence times is vital to understanding critical zones and reducing the spread of infectious diseases that can spread via air. This project performs flow and air residence time analysis for a classroom in the Department of Chemical Engineering, IIT Bombay, for various placements of exhaust fans. CFD simulations are performed using OpenFOAM. Based on the analysis, the optimal placement of exhaust fans and an additional intervention to improve the ventilation in the room are suggested. An ML model is also trained on the CFD data to predict air residence times without running the flow simulations, saving computational time and power.
Analysis of thermal effects on transition in boundary layer flows
Guide: Prof. Avishek Ranjan
This project analyzes the thermal effects on the laminar-to-turbulent transition in boundary layer flows. The study utilizes a 2D flat plate geometry and evaluates performance of various transition models in Ansys Fluent and the impact of plate temperature and heat flux on transition and drag. Results suggest that cooling delays turbulence onset but increases drag in turbulent regimes, while heating accelerates transition, enhancing heat transfer. The findings have applications in reducing drag (e.g., on airplane wings) and improving heat transfer in turbines.
JLR chiplet challenge: Jet impingement cooling for chiplets in Electric Vehicles
The Inter-IIT Tech meet is an annual technical competition among 20+ IITs. The competition features industry relevant problem statements posed by various companies. Won the Bronze medal as part of the 8-member team representing IIT Bombay in the Jaguar Land Rover Chiplet Challenge.
Worked on the thermal management part of the problem statement. Simulated and characterized the performance of a jet-impingement based cooling solution for various ambient temperatures, and compared it with natural convection based staggered pin fin heat sink simulations as a baseline. Results showed that owing to the scalability of the proposed solution, it could extract close to twice the amount of heat extracted by the heat sink in similar external conditions. Received second highest score in the thermal management section.
Multiphase flow simulation of Cryogenic Pulsating Heat Pipes
Guide: Prof. Milind Atrey
A Pulsating Heat Pipe (PHP) is a heat transfer device consisting of a thin, capillary tube bent into multiple loops and partially filled with a working fluid. When a temperature difference exists between the evaporator (hot section) and condenser (cool section) and exceeds a threshold, the liquid plugs and vapor bubbles oscillate back and forth. Heat is transferred through both latent heat exchange (evaporation and condensation) and the sweeping motion of the liquid plugs, making PHPs highly efficient for transferring heat. The project involved analyzing the performance of cryogenic PHPs by studying the influence of key parameters such as filling ratio, condenser temperature, and effective thermal conductivity on system efficiency. Additionally, a transient multiphase flow simulation was conducted for a 2-turn cryogenic H₂ pulsating heat pipe using the Volume of Fluid (VOF) model in ANSYS Fluent.
Fluid flow across a square cylinder in a backward-facing step using CFD
Guide: Prof. Atul Sharma
The project focused on simulating fluid flow across a square cylinder in a backward-facing step using CFD. A Finite Difference Method solver was developed in MATLAB to model flow in a lid-driven cavity and backward-facing step using vorticity and stream-function formulation. A grid independence study was also conducted, and the results were verified with existing literature.
Student Satellite Program, IIT Bombay
The Student Satellite Program is a 30+ member student team developing CubeSats, CubeSat-compatible modules, and an automated ground station; the team’s first satellite ‘Pratham’ was launched by ISRO in 2016
Thermal Control of Satellite electronics
Simulated thermal conditions in the Low Earth Orbit using transient thermal analysis in Ansys Workbench to ensure optimum temperature ranges for electronic components. Designed and analyzed Multi-layer Insulation as a passive thermal control method, reducing temperature fluctuations and maintaining optimal thermal conditions. Presented findings at the International Conference on Spacecraft Mission Operations 2023. (Poster Presentation)
Mechanical design and analysis of a 1U CubeSat
Designed CAD models using SolidWorks, ensuring Design for Manufacturing (DFM) practices. Conducted structural simulations (Static, Modal, Random and Harmonic) and performed vibration testing on the hardware prototype to ensure structural integrity of the CubeSat.
Effect of wall temperature on Vortex shedding in flow over cylinders
Guide: Prof. Sandip Saha
This project investigates the phenomenon of vortex shedding in flow over a cylinder, a common model for real-world applications like aerodynamic studies of structures or energy harvesting systems. Using the open-source CFD software OpenFOAM, simulations were performed to analyze the effects of Reynolds number and Richardson number on vortex shedding characteristics. The study validated simulation results against established literature and identified critical parameters influencing flow dynamics.
Carbon-fibre based Jumping bot: A Low-Cost Robotic Solution for Challenging Terrains
Guides: Prof. Ramesh Singh and Prof. Salil Kulkarni
This project focused on the design and development of a cost-effective and lightweight robot capable of jumping over obstacles and navigating difficult terrains. Utilizing carbon fiber for the jumper linkages, the bot gradually stores elastic energy and releases it rapidly to achieve a jump height of approximately 2.5 meters. The bot operates on a motor-driven reel mechanism and latch system, with its components optimized for durability and efficiency. With a total cost under ₹5,000 (~60 USD), the Jumping Bot offers a cost-effective solution with promising applications in asteroid exploration and disaster response scenarios, including navigating earthquake-affected zones.
Wind Farm Layout Optimization
Guide: Prof. Avinash Bhardwaj
Designed and implemented a mathematical model using Pyomo and Gurobi solver to optimize turbine layout in a wind farm. Developed an objective function to maximize power generation within a fixed budget, balancing turbine size, number, and placement under varying wind conditions. Utilized a 12-month velocity profile matrix to achieve a layout that maximized annual power production.
Variation of mechanical properties with internal macrostructure of PLA
Guide: Prof. Krishna Jonnalagadda
Designed and conducted an experiment to study the variation in mechanical properties of 3D-printed PLA with changes in infill density and pattern. Performed tensile testing using a Universal Testing Machine and Digital Image Correlation. Utilized VIC-2D software to analyze images and obtain accurate full-field strain values.
Elevation Measurement device | Mechanical Measurements project
Guide: Prof. Sridhar Balasubramanian
Designed and built a device to measure elevation and distance of objects using an MPU6050 accelerometer, ultrasonic sensor, and Arduino Nano. Developed calibration functionality and a navigable interface on OLED display. Designed and 3D-printed a portable outer structure, achieving 2nd place among 14 teams.
High Altitude Solar Reflector Drones
Guide: Prof. Dhwanil Shukla
Involved in conceptualization of a solar powered Autonomous Aerial Vehicle, for the purpose of harnessing and redistributing solar radiations, as an attempt to slow down global warming. Used OpenVSP software for analyzing the aerodynamic characteristics of the drone.
Modular Reaction Wheel System
Developed a low-cost reaction wheel system for fine attitude control and disturbance mitigation in CubeSats. Implemented a PID controller on Raspberry Pi Pico and tuned parameters using the Ziegler-Nichols method. Designed and manufactured a 1U CubeSat prototype and flywheel using 3D printing and laser cutting, and built a proof-of-concept testing setup for 1-axis attitude stabilization on the ground.
CFD Analysis of Turbulent Velocity Profile in a Cylindrical Pipe
Conducted CFD simulation to analyze the velocity profile of turbulent flow in a cylindrical pipe using K-epsilon (k-ε) turbulence model in Ansys Fluent, and validated the results with emperical & experimental results.
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