Chemical Engineering Power Plant

RESUME

Chaitanya Raosaheb Mali

Gurusiddha, Plot No.71, Padmaraje Co. Op.Hsg.Society

Ujalaiwadi, Kolhapur, 416004

Contact: +91-997*******, Email: ***************@*****.*** Area of Research

Computational Fluid Dynamics (CFD), Thermal hydraulics, Flow boiling, Heat Transfer, Cavitation, Multiphase flow, Scale up, Batch Kinetics, Reactive distillation, ANSYS Fluent, CFX, MATLAB

Major Research Accomplishments

CFD modeling of subcooled nucleate flow boiling in high pressure vertical tube using Euler-Euler two fluid model in combination with wall boiling model

Comparison of phase interaction models for adiabatic and non-adiabatic systems

Development of new methodology to predict full range flow boiling phenomena in long vertical steam generator tube at high pressure

Flow boiling CFD simulations on 23 m and 30 m long steam generator tube in nuclear power plant based on developed methodology to predict thermal hydraulic characteristics and optimize flow conditions

One-dimensional modeling of two-phase pressure drop and void fraction

CFD study on the effect of various geometrical parameters of honeycomb type orifices (in nuclear reactors) on pressure drop and cavitation characteristic Educational Qualifications

Ph.D (Tech) Chemical Engineering (Dec 2015-Oct 2020) Institute of Chemical Technology (formerly UDCT), Matunga (E), Mumbai - 400 019, Maharashtra, India.

Topic: Thermal Hydraulic Studies on Boiling and Cavitation in Vertical Tubes Overview- Flow boiling and cavitation in vertical tubes are two important aspects of the nuclear or thermal power generation systems and chemical process industries. Flow boiling in vertical steam generator (SG)/ evaporator tube is associated with complexities of pressure drop, flow instability, dryout etc. Cavitation in flow zoning devices may cause the structural damage, erosion and flow choking etc. The knowledge of thermal hydraulic parameters governed by flow boiling and cavitation is essential to avoid complexities involved resulting in reliable and safe operation of the device/equipment. The research work involved computational and 1-D modeling two phase flow boiling process. Comparison study of different phase interaction models such as drag, non-drag forces, boiling parameters etc. was carried out to develop CFD model for subcooled nucleate flow boiling. Developed CFD model was extended to model full range flow boiling phenomena by generation of new methodology. Developed CFD model is capable to predict various thermal hydraulic parameters and flow instability in 23 m and 30 m steam generator tubes at 172 bar pressure with sufficient accuracy. CFD study is used to optimize the flow conditions, geometrical parameters of honeycomb shaped orifice plates in nuclear reactor, which would lead to better design and applicability in a wide range of zones.

Master of Technology (M.Tech) in Chemical Engineering (2013-2015) Dr. Babasaheb Ambedkar Institute of Technology, Lonere, Raigad, Maharashtra, India Result: 8.8 CGPA

Topic: “Synthesis of 2-Cyclopentylidenecyclopentanone: Batch Kinetics and Reactive Distillation”

Overview- Self Aldol condensation of cyclopentanone in presence acidic or basic catalyst or Ion Exchange Resin (A-15) yields 2-Cyclopentylidenecyclopentanone which is used as intermediate product in several applications like physiologically active substances or perfumes etc. The product obtained from reaction is costly and has huge value in market. Surprisingly, there are no kinetic data published for this reaction using ion exchange resins. The intrinsic kinetics for this reaction was generated in a stirred batch reactor at atmospheric pressure over the temperature range of 353-373 K. Batch Kinetics and Reactive Distillation study of this system has been performed. Bachelor of Chemical Engineering (B.E) (2009-2013) Padmabhushan Vasantraodada Patil Institute of Technology, Budhagaon, Sangli, Maharashtra, India

Result: 75.75 % (First class with distinction)

Thesis topic: “Disinfection of water by Hydrodynamic Cavitation” Overview- Hydrodynamic cavitation technology is used for disinfection of river water. It was found that cavitation can be a viable treatment option as it is an onsite treatment process. This saves the cost of pumping water to the treatment plant. Scholastic Achievements

Secured 1st Rank in B.E Chemical Engineering in Shivaji University, Kolhapur

Secured 1st position in College Level Technical Project Presentation Contest held at Department of Technology, Shivaji University, Kolhapur on ‘Wastewater Treatment using Hydrodynamic Cavitation’.

Awarded Gold medal for securing 1st rank in Dr. Babasaheb Ambedkar Technological University

Awarded Indira Gandhi Center for Atomic Research (IGCAR) Fellowship in Ph.D program from Indira Gandhi Centre for Atomic Energy (DAE-IGCAR)- Govt. of India

Awarded "Life Member of National Society of Fluid Mechanics and Fluid Power" from National Society of Fluid Mechanics and Fluid Power Publications

International Journals:

Mali, Chaitanya R., V. Vinod, and Ashwin W. Patwardhan. "Comparison of phase interaction models for high pressure subcooled boiling flow in long vertical tubes." Nuclear Engineering and Design 324 (2017): 337-359.

Mali, Chaitanya R., V. Vinod, and Ashwin W. Patwardhan. "New methodology for modeling pressure drop and thermal hydraulic characteristics in long vertical boiler tubes at high pressure." Progress in Nuclear Energy 113 (2019): 215-229.

Mali, Chaitanya R., Ashwin W. Patwardhan, Gautam K. Pandey, Indranil Banerjee, V.Vinod. “CFD study on the effect of various geometrical parameters of honeycomb type orifices on pressure drop and cavitation characteristics.” Nuclear Engineering and Design 370 (2020): 110880

Book Chapter:

Jyeshtharaj Joshi, Arun Nayak, Ashwin W. Patwardhan, …Chaitanya R. Mali,

“Computational Fluid Dynamics” Advances of Computational Fluid Dynamics in Nuclear Reactor Design and Safety Assessment, Chapter-2, Jan-2019 Conferences:

Chaitanya R. Mali, Dhiraj Lote, Ashwin W. Patwardhan, “Experimental and Computational Studies for Two Phase Flow Pressure Drop in Vertical Tube Boiling”, 7th International and 45th National Conference on Fluid Mechanics and Fluid Power (FMFP-2018), December 10-12, 2018, held at IIT Bombay, Mumbai, India

Chaitanya R. Mali, V.Vinod, Ashwin W. Patwardhan, “New Methodology for Modeling Pressure Drop and Thermal Hydraulic Characteristics in Long Vertical Boiler Tubes at High Pressure” National Conference on Critical Heat Flux and Multiphase Flow (CHFIC-2018), December 22-23, 2018, held at IIT-BHU, Varanasi, India

Chaitanya R. Mali, Ashwin W. Patawardhan, “Thermal Hydraulics Study of High Pressure Flow Boiling in Vertical Tube”, CHEMCON-2018, December 27-30, 2018, held at NIT Jalandhar, India

Chaitanya R. Mali, V.Vinod, Ashwin W. Patwardhan, “Effect of Wall Temperature Profile Inputs on Thermal Hydraulic Characteristics in Long Vertical Steam Generator Tube” Advances in Chemical Engineering (AdChE-2020), February 5-7, 2020, held at UPES, Dehradun, India (https://dx.doi.org/10.2139/ssrn.3679529) Developed skills and extracurricular activities

Ability to develop CFD model, programming of user defined functions (UDF) in Ansys 17.2

Coordinating with fabricator to make the set-up for experimental study as per requirement

Ability to design experiments and required set-up for various heat transfer equipments

Managed HPC facility (160 cores) for CFD (Ansys 14, 17, 18, 19) at ICT, Mumbai

Successfully handled laboratory petty cash account, purchasing of high- performance computational PCs and other lab equipments

Actively Participated in INS national workshop on “Application of Numerical Heat Transfer to Industrial problems” dated 16-20 September 2019 at Bhabha Atomic Research Centre (BARC) Mumbai

Computer Proficiency

Operating Systems : Windows (7, 10)

CFD tools

: ANSYS Fluent, CFX v14, v17, v18, COMSOL (introductory knowledge)

Application softwares : Matlab 2009

Programming Languages : C, C++( introductory knowledge) Personal Details

Date of Birth: 29th August 1991

Gender: Male

Maritial Status: Single

Languages: English, Marathi, Hindi

Nationality: Indian

Passport No. and Validity: L8292821, DOE-25/03/2024 References

Prof. Ashwin W. Patwardhan

Professor, Head

Chemical Engineering Department,

Institute of Chemical Technology,

Matunga (E), Mumbai - 400019, India.

Email: **.**********@*********.***.**

Prof. J. B. Joshi

Emeritus Professor,

Chemical Engineering Department,

Institute of Chemical Technology,

Matunga (E), Mumbai - 400019, India.

Email: *******@*****.***

Dr. C. S. Mathpati

Associate Professor,

Chemical Engineering Department,

Institute of Chemical Technology,

Matunga (E), Mumbai - 400019, India.

Email: **.********@*********.***.**

Dr. V. H. Dalvi

Assistant Professor,

Chemical Engineering Department,

Institute of Chemical Technology,

Matunga (E), Mumbai - 400019, India.

Email: **.*****@*********.***.**

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