Engineering Mechanical

Aditi Oza

**** *. ********* ****, #**, Schaumburg, IL - 60173

Ph.(H): 615-***-****

abj1x3@r.postjobfree.com

Work Experience

1. Jan. 2006-Jan. 2008: Worked as Teaching Assistant under Prof. Kanchan

Chowdhury, IIT Kharagpur.

Responsibilities:

. Assisted the professor in classroom lectures and forming model

questions for the subjects of Introduction to Refrigeration and

Introduction to Cryogenic Engineering.

. Interacted with students and clarified their doubts in the subjects,

graded exams and subject assignments.

. Assessed exam answer sheets and submitted final grades to the professor

for final submission to institute.

. Assisted the professor in writing three project proposals regarding

oxygen safety:

1. "Modeling of Ignition of Metal and Non-Metal under Gaseous/Liquid

Oxygen Environment and Fabrication of Prototype and Components of Test

Apparatus", submitted to Indian Space Research Organization in August

2006.

2. "Experiments on Combustion Behavior of Metals under Gaseous Oxygen

Environment", submitted to Indian Space Research Organization in

August 2006.

3. "Experimentation and qualitative model development of the flow

friction ignition mechanism and the effects of material aging and

creep for non-metals in oxygen-enriched environments", submitted to

Department of Science and Technology, India and DEST, Australia under

the Indo-Australian Fund for Scientific and Technological Cooperation

(Indo-Australian S&T Fund).

2. July 2005-Dec. 2005: Worked as permanent Lecturer in U.V.Patel College

of Engineering, Gujarat, India.

Responsibilities:

. Framed course curriculum for the subjects of Engineering

Thermodynamics, Thermal Engineering and Alternate Energy Sources.

. Conducted lectures for undergraduates for Engineering Thermodynamics

and Alternated Energy Sources.

. Developed laboratories for the subjects of Alternate Energy Sources and

Engineering Thermodynamics.

. Framed University question papers. Assessed and graded exams and

students assignments.

3. Jan. 2003-July 2003: Worked as Visiting Lecturer in Birla Vishwakarma

Mahavidyalaya, Gujarat, India.

Responsibilities:

. Conducted lectures for undergraduates in Engineering Thermodynamics and

Basic Mechanical Engineering.

. Conducted laboratory and work shop activities for undergraduates in

Engineering Thermodynamics and Basic Mechanical Engineering.

. Framed questions and graded exams and students assignments.

Project Experience

1. Evaluation of electrostatic discharge due to tribocharging of

contaminant particles as an ignition mechanism in oxygen system

Ph.D-Jan'06-April'10

As valves constitute one of the most vulnerable components in

generation and accumulation of solid particles, I have analyzed their

performance with the tools of Computational Fluid Dynamics (CFD), which

has given clear ideas of the temperature rise in the valve and the

possible locations of particle accumulation. I have determined the

velocity profile utilizing the FLUENT code and calculated the charge

generated in particles, exploring the ignition probability of equipment

in oxygen environment through electrostatic discharge. I have also

attempted to perform preliminary calculation to determine charge density

and the electric field strength required for brush discharge. CFD

analyses on globe valves reveal the presence of probable areas of

particulate accumulation in the valve. The decrease in minimum ignition

energy (MIE) in the environment of high pressure, high temperature, high

purity of oxygen, low humidity, small particles, high dielectric

constant, low thickness of insulating layer, and high resistance of the

deposited dust layer facilitate occurrence of PBD which may cause

ignition. Adiabatic heating may aid combustion by lowering the MIE of

particles. I have further performed CFD-Fluent three dimensional

simulations for gas pressure regulator for pressure - velocity profiles.

Identification of the recirculation zones would aid determining the

probable location of contaminant accumulation in the regulator. I hold

knowledge of ASTM and NFPA standards.

As part of thesis, I have designed and set up an experimental set up

to measure the generation of tribocharge on the particles in air. As the

charge generation is not affected by the surrounding medium, the results

can be correlated to the charge generated in oxygen systems. This

experiment would serve as validation to the theory developed for charge

generation on particles/contaminants in oxygen systems.

2. Magnetic refrigeration and it's utilization in 1 ton/day hydrogen

liquefier MS-July'04-July'05

My report covered the basic principles, development and the specific

application of magnetic refrigeration (MR). I applied the concept of MR

in the liquefaction of hydrogen and performed theoretical analyses for

the liquefier efficiency as a case study of 1 Ton per day magnetic

hydrogen liquefier. The case study of 1Ton / day magnetic hydrogen

liquefier involved the efficiency calculation its comparison with the

already established laboratory based 0.1 Ton / day MR based hydrogen

liquefier in University of Quebec, Canada.

Skills Profile

Leadership:

. Acted as Research Scholar Senate Representative at IIT Kharagpur in

2007-2008 and initiated the need for placement cell for research

scholars.

. Acted as Vice-President of Mother Teresa Hall of Residence hall

council at IIT Kharagpur in 2007-2008 and initiated development plans

for better facilitated environment for the boaders.

. Organized various celebratory events as student coordinator of

Cryogenic Engineering Society at Cryogenics Engineering Centre, IIT

Kharagpur.

. Part of the cultural and technical committee for Convergence 2005 at

U.V.Patel College of Engineering.

. Organized various cultural and technical events at BVM in 2000-2003

Communication Skills:

. Voiced several issues concerning Research Scholars in the Senate of

IIT Kharagpur.

. Anchored in the cultural events as a part of International Library

Conference held at IIT Kharagpur in 2007.

. Prepared and conducted periodic presentations during Ph.D at IIT

Kharagpur.

. Did comparing at various celebratory events at Cryogenics Engineering

Centre, IIT Kharagpur.

. Prepared and conducted periodic presentations during Masters of

Engineering at L.D.College of Engineering, Gujarat.

. University Champion in Youth festival debate competition in 2002 at

BVM, Gujarat.

Software Skills:

. Proficiency in programming languages C

. Competent in AutoCAD -2008, Pro-E, CFD-FLUENT, Origin

. Operating system: Windows XP

. Office Automation: Microsoft office

Educational Qualification

2006 - 2010 Doctor of Philosophy (Ph.D)

Cryogenic Engineering Centre

Indian Institute of Technology Kharagpur, India.

Studied Computational Fluid Dynamics and Data Structures and

Algorithms.

Completed an audit course in English for Formal Purposes.

2003 - 2005 Masters in Engineering (Cryogenic Engineering)

L. D. College of Engineering, Gujarat, India.

Studied Advanced refrigeration, Advanced air-conditioning,

Cryogenic fundamentals, Cryogenic heat transfer, Vacuum

engineering, Cryogenic Systems, Cryogenic Plant & Equipment,

Design & System Engineering for Refrigeration & Air-conditioning

Plants, Design & System Engineering for Cryogenic Plant &

Components, Computer Applications in Cryogenic Systems.

Completed one year dissertation project on magnetic

refrigeration and it's utilization in 1 ton/day hydrogen

liquefier.

1999 - 2003 Bachelors in Engineering (Mechanical Engineering)

Birla Vishwakarma Mahavidyalaya (BVM), Gujarat, India.

Studied core subjects of Mechanical engineering like Engineering

Thermodynamics, Machine Design, Theory of Machines, Fluid

Mechanics, and Internal Combustion Engines etc.

Completed Engineering in Accelerated Mode

Academics Honors/Awards/Fellowships

. Won the Best Technical Paper Award at the 30th National Seminar on

Industrial Gases held on 23rd-24th February 2008 at Bhubaneswar,

India.

. Qualified IIT-IISc conducted GATE-2005 examination with percentile

score 89.09.

Papers Published

1. Aditi Oza, Sudipto Ghosh and Kanchan Chowdhury, "Tribocharging of

particle contaminants evaluated as an ignition source in oxygen-enriched

environments", Article in press, Journal of ASTM International, Vol. 6,

Issue 8, 2009.

2. Aditi Oza, Sudipto Ghosh and Kanchan Chowdhury, "Electrostatics: A

Possible Cause of Fire in Contaminated Oxygen Systems", AIIGMA-Gas News,

Vol. 32, Pg. 9-23, February-March and Vol. 33, Pg. 7-31, April-May,

2008.

3. Aditi Oza and Kanchan Chowdhury, "Safe Design of Oxygen System

Components: A Review", Indian Journal of Cryogenics, Vol. 31, Pg. 91-95,

2006.

4. Aditi Oza, Hardik Bhavsar, R.M.Shah, "Magnetic Refrigeration, it's

Developments and it's Utility in Magnetic Hydrogen Liquefier", Indian

Journal of Cryogenics, Vol. 29, Pg. 35-39, 2005.

5. Hardik Bhavsar, Aditi Oza, R.M.Shah, "Additional Energy Requirement for

an O2-N2 Distillation Column using Pinch Analysis and its Comparison

with Ponchon-Sovarit Graphical Method", Indian Journal of Cryogenics,

Vol. 29, Pg. 24-30, 2005.

6. Hardik Bhavsar, Aditi Oza, R.M.Shah, "Theoretical Optimization of Claude

Liquefaction Cycle", Indian Journal of Cryogenics, Vol. 29, Pg. 31-34,

2005.

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