According to Apollo Astronaut John Young: "Dust is the number one concern in returning to the moon"

Source: https://home.iitk.ac.in/~aasheesh/ Parent: https://iitk.ac.in/doaa/pmrf/

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Hello, welcome to my webpage. I am currently working as a prime minister research fellow at the Department of Aerospace Engineering at Indian Institute of Technology Kanpur, Kanpur (U.P.), India.

Before moving to Kanpur, I worked as a research assistant at IIT Kharagpur, West Bengal, India. My appointment as PMRF was possible through research opportunity I got during my time at the lab, I worked on enhancing exergetic efficiency of hydrogen liquefaction plant, because turboexpander is heart of any liquefaction plant we worked towards enhance the efficiency of turboexpanders and it enhanced the overall efficiency of process.

I am pursuing my doctoral studies under the guidance of Professor Rakesh Kumar Mathpal, in the non-equillibrium flow simulation laboratory(NFSL), IIT Kanpur. My research is on developing a coupled DSMC-DEM (Direct Simulation Monte Carlo -Discrete Element Method) framework for dusty gas flow simulation and analyzing the basic physics understanding behind lunar landing. In any space exploration mission during planetary descent, when a lander approaches towards the surface of an extraterrestrial body, the expanded supersonic plume from the nozzle exhaust of positioning rockets impinges on the planetary body's soil or regolith, and interaction between plume and surface occurs. This high-speed and high-temperature plume produces a shock, fluidizes, and ejects granular particles from a surface. This creates one or more craters, and as a result, soil particles gain momentum. Consequently, this ejected matter would disperse dust and larger debris. The particles that are so dispersed have the potential to do severe damage. The present work aims to develop a high-fidelity simulation framework capable of modeling dusty gas flows encountered during plume surface interactions. The research work aims at performing dusty gas flow dynamics using a particle-based Lagrangian-Lagrangian computational framework. The solver that is developed for dusty gas flows is by coupling the in-house DSMC flow solver with the in-house DEM solver. Along with that I have also developed a CFD-DEM coupled solver for continuum applications along with my group in OpenFoam platform. This solver is used to calculate the crater diameter during lunar landing and shock particle interactions. The solver is a dusty gas flow solver which is well verified for supersonic dusty gas flows and have been used for applications like dusty gas flow over a cylinder and shock granular particle curtain interactions in shock tube.

In my previous academic pursuit, I was enrolled as a Masters student in the Process Equipment & Design Laboratory (PED lab) at the Indian Institute of Technology Kharagpur. My research primarily centered around the development of a Reverse Brayton Cryocooler (RBC) tailored for cooling high-temperature superconducting (HTS) cables. I worked under the guidance of Professor Parthasarathi Ghosh towards my thesis on "Development of test rig towards experimental investigation of Reverse Brayton Cryocooler used for cooling of High Temperature Superconductors". During this period, I played a pivotal role in the conversion of a decommissioned helium liquifier into a Reverse Brayton cryocooler. In this work we utilised heat exchangers and turboexpanders of helium liquifier to build a RBC for HTS cooling. Specifically, I was responsible for estimating the parameters of all heat exchangers and building a test rig for the cryogenic turboexpander. Prior to pursuing postgraduate studies, I successfully completed my Mechanical Engineering from AKG Engineering College (AKTU, Lucknow), Ghaziabad, Uttar Pradesh .

Research Interests

• Gas-Granular flows or dusty gas flows
• Lunar landing, Erosion, Crater formation
• Framework (solver) development, parallel programming, HPC, Fortran, python, C++, OpenFOAM, SPARTA, LIGGGHTS, LAMMPS, Ovito, Paraview
• Discrete Element Method (DEM)
• Direct Simulation Monte Carlo (DSMC)
• CFD-DEM coupled simulations, Particle-laden flows
• Molecular Gas Dynamics, Non-equillibrium gas flows
• Granular flows, Silo flows, chute flow, landslide dynamics
• Computational Fluid Dynamics (CFD)
• Shock Waves, unsteady gas dynamics
• Experimental fluid dynamics, shock tube, blast wave
• Shock Particle Interactions, Shocklets, Shock induced instabilities
• High-Speed Gas Dynamics

Reviewer

| Jan 2023 - Present | Physics of Fluids (AIP) |

Education

| Jan 2020 - Present | Ph.D. in Aerospace Engineering (CPI:10/10). Indian Institute of Technolgoy Kanpur, UP, India. | Marksheet Letter| July 2017 - May 2019 | M.Tech. in Cryogenic Engineering. Indian Institute of Technolgoy Kharagpur, WB, India. | | July 2012 - June 2016 | B.Tech. in Mechanical Engineering. Uttar Pradesh Technical University (UPTU) India. |

Teaching Experience (as a student)

| Fall 2018 | Teaching Assistant CR61011: Compressors and Pumps | | Spring 2019 | Teaching Assistant CR61022: Cryogenic Expansion Devices (Turbomachinary) | | Spring 2021 | Teaching Assistant ESO201A: Thermodynamics | | Fall 2021 | Teaching Assistant AE451(A): Aerodynamics Experiments | | Fall 2021 | Teacher Introduction to Thermodynamics | | Spring 2022 | Live tutor NPTEL: Introduction to Programming in C Prof Satyadev Nandakumar Certification from NPTEL, IIT Kanpur | Fall 2022 | Live tutor NPTEL: Computational Fluid Dynamics and Heat Transfer Prof Gautam Biswas Certification from NPTEL, IIT Madras| Fall 2023 | Tutor AITH Kanpur: Heat Transfer Operations and Heat Exchanges Certification from AITH, Kanpur| Fall 2023 | Live tutor NPTEL: Computational Fluid Dynamics and Heat Transfer Prof Gautam Biswas Certification from NPTEL, IIT Madras| Fall 2023 | Teaching Assistant NPTEL: Computational Fluid Dynamics and Heat Transfer Prof Gautam Biswas Certification from NPTELTrainings | 02 October -- 07 October 2023 | CISM advanced Course "Landslides Mechanics: from Complex Granular Behaviour to Field-Scale Flows", organised by CISM, Udine, Italy Certificate | 09 July -- 14 July 2023 | Workshop for experiments in fluid dynamics "ADVANCED MEASUREMENT TECHNIQUES IN FLUID MECHANICS", organised by IISc Bangalore Certificate | 05 Dec -- 09 Dec 2022 | Short term GIAN course "Multiphase Combustion: Theory and Modelling", organised by IIT Kanpur Certificate | 17 May -- 20 May 2022 | HPC in CFD "High Performance Computing (HPC) for Computational Fluid Dynamics (CFD) Applications", organised by IIT Bombay and C-DAC under the aegis of National Supercomputing Mission (NSM) Certificate | July 2015 -- August 2015 | National Thermal Power Corporation, Dadri Vocational Training for plant working understanding Boiler maintenance and Ash handling department, learnt about power plant process, Rankine cycle and various equipment used etc. Also submitted a project report on working of cooling towers Certificate | June 2014 -- July 2014 | Indian Railways In workshop training Indian Railways workshop, Izzatnagar, Bareilly Braking system in locomotive (Air brakes, pneumatic brakes), working of engine of locomotive, carriage maintenance. Certificate | | | | | | Course Projects (as a student at IIT) | AE694 (Spring 2020) | Acoustics in fluids (Prof. Sathesh Mariappan) Natural frequencies and their mode shapes for different geometries Report | ME617(A) (Spring 2020) | Advance theory of turbomachinery (Prof. Subrata Sarkar) Secondary Flow In Turbomachinery: Theory And Losses Term paper 1 | ME617(A) (Spring 2020) | Advance theory of turbomachinery (Prof. Subrata Sarkar) Tip-leakage Flows In Axial Flow Turbines Term paper 2 | ME617(A) (Spring 2020) | Advance theory of turbomachinery (Prof. Subrata Sarkar) Rotating Stall and Surge in an Axial Compressor Term paper 3 | AE602(A) (Spring 2020) | Heat Transfer for Aerospace Application (Prof. Rakesh Kumar) A Study of Mixed Convection Heat Transfer in Different Structures Term Paper | | | | | | | | | |

Refereed Journal Publications

Refereed Conference Publications

Conference Presentations

Poster Presentations

Seminars and Invited Talks

1. Introduction to Thermodynamics, lectured in the Department of Mechanical Engineering, HBTU, Knapur, India, July-Dec , 2021.

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Courses taught at HBTU Kanpur as PMRF

1. ME6150, Laws of Thermodynamics: July - Dec 2021

National Programme on Technology Enhanced Learning (NPTEL) as a PMRF Tutor

1. Introduction To Programming In C : February - April 2022
2. Computational Fluid Dynamics and Heat Transfer : July - October 2022
3. Computational Fluid Dynamics and Heat Transfer : July - October 2023

Internship Students

1. Kriti Mawani (Rajasthan Technical University, India) (Summer 2021)
2. Kuhu Mishra (SRM university, Chennai) (Winter 2019)
3. Niga Das (SRM university, Chennai) (Winter 2019)

According to Apollo Astronaut John Young: "Dust is the number one concern in returning to the moon"

Lunar landing diagram by Aasheesh Bajpai

Physics of plume surface interaction(PSI): PSI involves high-speed chemically reacting plumes interacting with a planetary surface. Near plume region behaves as a continuum. Under rarefied conditions, the continuum assumption is not valid farther away from plume; therefore, kinetic-based equations of motion are more applicable. For this work we are using only particle based methods in the whole domain. We are using DSMC for the plume flow and DEM for the granular particle flows and particle-particle interactions. \ Problems reported during Apollo landing: Obstruction to the pilot's vision, degradation of thermal control surfaces, dust penetration into the vehicle, damage to solar cells and pressurized vessels, damaged astronaut's suit, surveyor's optical mirror(183 meteres from Apollo) was damaged due to the dust particles cast out by Apollo during descent.\

Fig. - Martian landing

HTML hr color Attribute

Linux/Programming Documents

• High Performance Computing at Cornell Virtual Workshop
• High Performance Computing training at Lawrence Livermore National Labs

Computaional Fluid Dynamics

• CFD notes by Aasheesh Bajpai Notes
• CFD live sessions by Aasheesh Bajpai NPTEL live sessions

Introduction to programming with C

• Introduction to programming with C, live sessions by Aasheesh Bajpai NPTEL live sessions

Engineering Talks

• CFD Solvers, Coding & Multiphysics- Esteban Ferrer
• Understanding Direct Simulation Monte Carlo method by Prof. Rakesh Kumar Mathpal
• Thermodynamics and Heat Transfer (Practical Understanding)
• Eureka with Prof. Suman Chakraborty
• How to be a professor at IIT's

Links

• Want to be successful? listen to Richard St. John
• Tomorrow's Professor Blog (source: Stanford University)
• Richard Feynman on Teaching
• How to Give a Talk So Good There Will be Pizza Left For You - David Evans
• Good Writing - Marc H. Raibert

TED Talks

• The art of misdirection - Apollo Robbins
• Hidden miracles of the natural world - Louie Schwartzberg
• Secrets of success - Richard St. John
• How to live before you die - Steve Jobs
• Robots that fly and cooperate - Vijay Kumar
• Skyfall in a sari - Usha Uthup
• What I learned from going blind in space - Chris Hadfield
• How to green the world's deserts and reverse climate change - Allan Savory
• Choosing what to choose - Sheena Iyengar
• The hidden beauty of pollination - Louie Schwartzberg
• Turning trash into toys for learning - Arvind Gupta
• My solar-powered adventure - Bertrand Piccard
• The riddle of experience vs memory - Daniel Kahneman
• The fringe benefits of failure - J K Rowling
• Why you will fail to have a great career - Larry Smith

Professors working on granular flows

• Prof. Paul Umbanhowar
• Prof. Hongyang Cheng
• Prof. Julio M. Ottino
• Prof. Richard M. Lueptow
• Prof. Hongyang Cheng
• Prof. Ken Kamrin
• Prof. Rakesh Kumar Mathpal
• Prof. Ashish Bhateja
• Phil Metzer
• Prof. Dhirag Patil
• Prof. Sanjay Kumar
• Prof. Jesse Capecelatro
• Prof. Prabhu Nott
• Prof. V. Kumaran
• Prof. Anurag Tripathi
• Prof. Anshu Anand
• Prof. Sankaran Sundaresan
• Prof. Josef Dufek

Professors working on gas-granular flows or dusty gas flows

• Prof. Charley Wu
• Prof. R.S. Myong
• Prof. Aaron Morris
• Prof. Goodarz Ahmadi

Professors working on CFD

• Prof. Dr. Esteban Ferrer
• Prof. Suman Chakrobarty
• Prof. T K Sengupta
• Prof. Richard Sandberg
• Prof. Dr. Petr Nikrityuk; University of Alberta
• Prof. Gautam Biswas; IIT Kanpur
• Prof. Anikesh Pal; IIT Kanpur

Professors working on hypersonics

• Prof. Dr. Alexandre Martin; University of Kentucky College of Engineering
• Prof. Deborah Levin; University of Illinois Urbana-Champaign

Extracurricular activities

• Member of councelling services IIT Kanpur \ Certificate pdf
• Member of hall task force for tackling COVID-19 issues \ Certificate pdf
• Active member of hall mess comittee \ Certificate pdf