Article

RFA Guardian

Philip V, Panchatcharam M, Mika P, Ronan F, Roberto B S, Horst R P, Jurgen F, Dieter S, Marina K, Michael M, RFA Guardian: Comprehensive Simulation of Radiofrequency Ablation Treatment of Liver Tumors, Nature Scientific Reports, 8(1), pp.787, 2018.

Lecture By Panchatcharam

It was really unique experience and interactive classes which made our learning more fun. I especially liked the error propagation game and as well as another one which is picking up the cheat and drawing the graph on the board and many more games we played which broke all the complex concepts into a very easy and understandable one.

Student

A Student

Education Advice

Achieving a
Good academic Records

The academic journey requires commitment, consistency, and a holistic approach.

Level 1

Set Clear Goals and Priorities

Clear goals provide direction, motivation, and a sense of purpose. Begin by defining specific measurable and realistic academic goals. Define short-term goals and long-term goals.

Level 2

Build Effective Study Habits

Have a consistent study habits that can lead to better retention, understanding and skill development. Work Smartly. Break down larger tasks into smaller and manageable steps. This ensures a consistency of study hours.

Level 3

Develop Critical-Thinking and Problem-Solving Skills

It helps deeper understanding and make your learning more meaningful. It boosts you to tackle challenges in both your academic and professional life. Don't memorize materials, ask questions, debate, analyze, think beyond the box. Do more exercises from various text books.

Level 4

Manage Stress, Health, Work-Life Balance

Academic journely not stops with studies, but you should have a sound health and mental-wellness. Keeping stress away, having balance of the life on academic and health enhances focus and creativity. Ensure study time is balance with relaxation, recreational activities, exercises and healthy eating.

Level 5

Seek Support and Continuous Assessment

Collaborate with fellow students, don't think they are your competitor, instead grow with them and make them to grow, this could help in a long-term relations and future collaboration. Who knows, who will become who. Don't hesitate to seek help when needed. Connect with professors, peers and guides. Participate in study groups, attend workshops, use library and laboratory resources effectively.

Education

#Degree/ClassInstitute/SchoolYear
1SSLCSHNV Hr. Sec. School, Sivakasi1999
2HSCSHNV Hr. Sec. School, Sivakasi1999-2001
3BSc (Mathematics)ANJA College, Sivakasi2001-2004
4MSc (Mathematics)ANJA College, Sivakasi2004-2006

PhD

Indian Institute of Technology (IIT) Madras, Chennai and 
Technische Universität (TU) Kaiserslautern, Germany

Prof. S. Sundar, IIT Madras
Prof. V. Vetrivel, IIT Madras
Prof. Axel Klar, TU Kaiserslautern, Germany

2008-2013

GPU Accelerated Finite Pointset method for Fluid Flow Problems

Collaborative work with TU Kaiserslautern under the DAAD-Sandwich Fellowship

Experience

#Job TitleEmployerRolesDuration
1LecturerVysya College, SalemLecturing UG/PG Course Jun 2006-Apr 2007
2TutorTWWI, ChennaiOnline Math TutorJuly 07-Dec 2007
3HIWIFraunhofer ITWMResearch Assistant2011-2012
4PostdocFraunhofer ITWMResearch on FPMMar 2013-Feb 2014
5CFD Software Development
Engineer (CFD-SDE)
NUMA Engineering
Services Ltd
Research and Software
Development
Apr 2014-Sep 2018
6Assistant ProfessorIIT TirupatiResearch, Teaching and
Administrative
Sep 2018-Dec 2023
7Associate ProfessorIIT TirupatiResearch, Teaching and
Administrative
Jan 2023- Present

Significant Roles at IIT Tirupati

#Job TitleRolesDuration
1Head, Dept. Mathematics and StatisticsVarious activities in the departmentJuly 2021-June 2024
2Advisor, Software, Computer CenterAdvising on various software 
purchase and website development
June 2020-June 2024
3Chairman, Course Code Change
Committee
Reinventing the new course code policyJan 2021-Jul 2022
4Chairman, Email Policy CommitteeDesigning Email policyJune 2020-June 2024
5Senate MemberDiscussion on Senate agendaJuly 2021-Present
6IT Advisor, IITTNIFWebsite DevelopmentJuly 2021-Dec 2024
7Core Committee Member, TIHDrafting Proposals and PoliciesJuly 2020-Dec 2024
8Channel Coordinator, SwayamprabhaChannel 38 CoordinatorJuly 23-Present
9Advisor, Public/Media Relations
and Analytics
Data Collection, Analytics, Media
Relations, Communication Strategies
January 24-Present

Finite Element Method

I have used FEM for solving bioheat equations in cancer treatment projects. Our research group has also used vector finite element method for microwave ablation cancer treatment. I worked with various projects with NUMA Engineering Services Ltd, Ireland.

Microwave Ablation

Finite Volume Method

I have used the finite volume method for various simulations. I am especially skilled at OpenFOAM, an open-source CFD software that simulates fluid flow and heat transfer with a variety of solvers and utilities. I worked on various projects with NUMA Innovation Limited, UK.

Acoustic Wave

Finite Pointset Method

FPM, a generalized finite difference method, deals CFD using a set of discrete points rather than a mesh. It scatters the points to represent the problem domain. I worked with Fraunhofer ITWM and TU Kaiserslautern, Germany to accelerate FPM using GPU accelerators. It was part of my PhD thesis.

FPM

Lattice Boltzmann Method

This method is based on statistical mechanics and the behavior of fluid particles. It is effective for complex boundary conditions. It is known for its simplicity, parallel computing efficiency. We worked on hyperbolic lattice Boltzmann method for phase change problems.

Solidification

Journal Publications

AuthorsTitleJournal Details Year
G. Boregowda and P. MariappanEffect of High Blood Flow on Heat Distribution  and Ablation Zone During Microwave Ablation-Numerical ApproachInternational Journal for Numerical Methods in Biomedical Engineering,
vol. 27. e3835
2024
S. Srivsatava and P. MariappanHyperbolic Lattice Boltzmann Method for Three-Dimensional Non-Fourier Heat Conduction with Phase ChangeNumerical Heat Transfer,
Part A: Applications, 1-17
2023
G. Boregowda and P. Mariappan3D modeling of vector/edge finite element method for multi-ablation technique for large tumor-computational approachPLoS ONE, vol. 18(7), e0289262
2023
S. Srivsatava and P. MariappanHyperbolic Lattice Boltzmann Method and Discrete 
Boltzmann Method for Solid–Liquid Phase Change Problem
Mathematics in Computer Science, 
vol. 17(9)
2023
G. Boregowda and P. Mariappan A Vector Finite Element Approach to Temperature Dependent Parameters of Microwave Ablation for Liver Cancer International Journal for Numerical 
Methods in Biomedical
Engineering, vol. 39, no.1 
2023
P. Mariappan, G. Boregowda and R. FlanaganA Point Source Model to Represent Heat Distribution Without Calculating the Joule Heat during Radiofrequency AblationFrontiers in Thermal Engineering2022
M. J. van Amerongen, P. Mariappan, P. Voglreiter, R. Flanagan, S. F. M. Jenniskens, M. Pollari, M. Kolesnik,
M. Moche and J. J. Fütterer
Software-based planning of ultrasound and CT-guided percutaneous radiofrequency ablation in hepatic tumorsInternational Journal of Computer 
Assisted Radiology and Surgery, vol. 16, no.1, pp.1051-1057
2021
H. Cindric, P. Mariappan, L. Beyer, P. Wiggermann,
M. Moche, D. Miklavcic and B. Kos
Retrospective study for validation and improvement of numerical treatment planning of irreversible electroporation ablation for
treatment of liver tumors

IEEE Transactions on Biomedical Engineering, vol. 68, no. 12, pp.3513-3524
2021
T. V. Oostenbrugge, J. Heikdamp, M. Moche, P. Weir, P. Mariappan, R. Flanagan, M. Pollari, S. Payne,
M. Kolesnik, S. F. M. Jenniskens, and J. J. Futterer
Validation of a Web-Based Planning Tool for Percutaneous 
Cryoablation of Renal Tumours 
Cardiovascular and Interventional
Radiology vol. 43, no.11, pp.1661-1670
2020
M. Moche, H. Busse, J. J. Futterer,
C. A. Hinestrosa, D. Seider, P. Brandmaier, M. Kolesnik, S. Jenniskens, R. B. Sequeiros, G. Komar,
M. Pollari, M. Eibisberger, H. R. Portugaller, 
P. Voglreiter,R. Flanagan, P. Mariappan and
M. Reinhardt
Clinical evaluation of in silico planning and real-time simulation of hepatic radiofrequency ablation (ClinicIMPPACT Trial)European Radiology, 30, 934-942
2020
P. Voglreiter, P. Mariappan, M. Pollari, R. Flanagan,
R. B. Sequeiros, H. R. Portugaller, J. J. Futterer, D. Seider, M. Kolesnik and  M. Moche
RFA Guardian: Comprehensive simulation of radiofrequency ablation treatment of liver tumorsNature Scientific Reports, 8(1)
2018
M. Reinhardt,  P. Brandmaier, D. Seider, M. Kolesnik,
S. Jenniskens, R. B. Sequeiros, M. Eibisberger,
P. Voglreiter, R. Flanagan, P. Mariappan, H. Busse
and M. Moche
A prospective development study of software-guided
radio-frequency ablation of primary and secondary liver tumors:
Clinical intervention modeling, planning and proof for ablation cancer treatment (ClinicIMPPACT)
Contemporary Clinical Trials
Communications, 8, 25-32
2017
P. Mariappan, P. T. Weir, R. Flanagan, P. Voglreiter,
T. Alhonnoro, M. Pollari, M. Moche, H. Busse,
J. J. Futterer, H. P. Portugaller, H. R. Portugaller,
and R. B. Sequeiros
GPU-based RFA simulation for minimally invasive cancer
treatment of liver tumours
International Journal of Computer Assisted Radiology and Surgery,
12(1): 59-68
2017
P. Mariappan, S. Subbiah, V. Vellaisamy, A. Klar,
and S. Tiwari
GPU computing for meshfree particle methodInternational Journal of Numerical Analysis and Modeling, Series B 4:394-4122013
P. Mariappan, S. Subbiah and A. Klar
GPU metrics for linear solverNeural, Parallel and
Scientific Computations, 21, 361-374
2013
P. Mariappan, S. Subbiah and A. KlarFinite Pointset method for 2D-dambreak problem with GPU-
acceleration
International Journal of Applied Mathematics, 25, 4:5452019
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Conference Proceedings

AuthorsTitleConference Details Year
S. Srivsatava and P. MariappanNon-Fourier heat conduction with phase change using Hyperbolic
Lattice Boltzmann Method by modifying the Equilibrium distribution function
VIII International
Conference on Particle-Based Methods
Italy
2023
G. Boregowda and P. MariappanStability analysis for the discrete finite element model of the
Pennes bioheat equation
0th International Conference of Numerical Analysis and Applied
Mathematics, Greece, AIP Conf Proc. 3094 (500013), 2024
2022
H. Cindric, P. Mariappan, L. Beyer,
P. Wiggermann, M. Moche, D. Miklavcic
and B. Kos
Numerically predicted irreversible electroporation ablation of hepatic tumours compared to MRI imaging - a retrospective study4th World Congress on Electroporation BioEM Conference, Flander Expo, Ghent,
Belgium
2021
P. Mariappan and R. FlanaganGPU Accelerated Radiofrequency and Microwave Ablation for
Image-guided Interventions on a Web-framework
CARS 2020—Computer Assisted Radiology and Surgery, 15
(Supplement 1), 54
2020
P. Voglreiter, P. Mariappan, M. Pollari, R. Flanagan, R. B. Sequeiros, H. R. Portugaller,
J. J. Futterer,D. Seider, M. Kolesnik and
M. Moche
RFA Guardian: Comprehensive Simulation of the clinical workflow for patient-specific planning, guidance and validation of RFA treatment
of liver tumours
International Journal of Computer Assisted Radiology and Surgery, 11 (Supplement 1): 1872016
M. Eibisberger, B. Schmerboeck, H. R. Portugaller, H. A. Deutschmann,
B. Leber, M. Moche, J. J. Futterer,
P, Mariappan, M. Pollari, M. Kolesnik,
P. Voglreiter and P. Stiegler
Clinical study for the simulation planning and control of treatment of patients with malignant liver tumors (CLINICIMPPACT)Transplant International, 29:12
25th Annual Meeting of the German Transplantation Society, Essen, Germany
2016
P. T. Weir, D. Reuter, R. Ellerweg
T. Alhonnoro, M. Pollari, P. Voglreiter,
P. Mariappan, R. Flanagan, 
C. S. Park, S. Payne, E. Staerk,
P. Voigt, M. Moche and M. Kolesnik
Go-smart: web-based computational modeling of minimally invasive cancer treatmentsEE E-Health and Bioengineering Conference 20152015
P. Iosifidis, P. T. Weir, P. Mariappan and
R. Flanagan
GPU acceleration of partial differential equation solvers4th International conference on parallel, distributed, grid and cloud computing for
Engineering, March 2015
2015
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Conference Attended

AuthorsTitleConference Details Year
S. Srivsatava and P. MariappanHyperbolic lattice Boltzmann method and multiple relaxation time discrete Boltzmann method for solid-liquid phase change problem8th European Seminar on Computing, Pilzen, Czech Republic, June 13-16, 20222022
P. Mariappan
(Keynote Speaker)
A point source model to represent heat distribution without
calculating the Joule heat during radiofrequency ablation
6th Annual Conference of the Indian
Mathematical Society (IMS 2020),
17-20 December 2020
2020
P. MariappanGPU accelerated radiofrequency and microwave ablation for
image-guided interventions on a web-framework
CARS 2020—Computer Assisted
Radiology and Surgery, June 2020
2020
P. Mariappan
(Keynote Speaker)
Mathematical modelling for MWA ablationInternational Web conference on
Recent Advances in Science (IWCRAS),
Don Bosco College, Meghalaya, July 2020
2020
P. Mariappan
(Keynote Speaker)
Mathematical modelling and bioheat equationNational Conference on Mathematics and
its Applications, SV University, Tirupati,
March 2019
2020
P. Mariappan
(Keynote Speaker)
GPU accelerated finite element method for Minimally Invasive
Cancer Treatment (MICT)
International Conference on Applicable
Mathematics (ICAM 2016), Stella Maris College, Chennai, December 2016
2016
P. Mariappan and R. FlanaganGPU accelerated finite element method for Minimally Invasive
Cancer Treatment (MICT)
International Conference on Advances in
Scientific Computing (ICASC 2016), IIT
Madras, Chennai, November 2016
2016
P. Mariappan, P. T. Weir, R. Flanagan,
P. Voglreiter,T. Alhonnoro, M. Pollari,
M. Moche, H. Busse, J. J. Futterer,
H. P. Portugaller, H. R. Portugaller and R. B. Sequeiros
GPU-based RFA simulation for minimally invasive cancer
treatment of liver tumours
30th International Congress on
Computer Assisted Radiology, Heidelberg, Germany, June 2016

2016
P. T. Weir, P. Mariappan, R. Ellerweg, R. Flanagan and M. KolesnikGo-Smart Glossia: A Tool to separate web-user, manufacture and
researcher concerns through extensible simulation containerization,
5th European Seminar on Computing,
Pilzen, Czech Republic, June 2016
2016
P. Mariappan, P. T. Weir and R. FlanaganGPU accelerated Lesion Prediction software tool for the
radiofrequency ablation to tumours
5th European Seminar on Computing,
Pilzen, Czech Republic, June 2016
2016
P. Mariappan, P. T. Weir and R. FlanaganGPU accelerated finite element method for radiofrequency
ablated cancer treatment (BEST Poster Presentation Award)
PRACE DAYS 2015, May 20152015
P. MariappanGPU computing for meshfree particle methodIndo-German Conference on
Modeling, Simulation and Optimization in Applications, TU Darmstadt, Germany, 2012
2012
P. Mariappan and S. SubbiahSimulations of the incompressible Navier-Stokes equation using
finite pointset method on GPU
Indo-UK Symposium on Industrial and Applied Mathematics, IIT Bombay, India, November 20112011
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Projects

Project TitleFunding FromProject Amount Duration Role
GPU Accelerated Meshfree Method Solution for FSI Problem on
Hemodynamics and its influence on cancer treatments
DST-DAAD8, 000 Euros (DAAD)
Rs. 10.25 Lakhs (DST)
2023-2025PI
Consultancy ProjectNUMA14, 000 Euros Per Year2020-2024PI
SIMCARE ProjectIreland Govt, and
European Commission
71, 429 Euros2018-2019Co-PI
Space Agency Project-1A Space Agency400, 000 Euros2020-2023Co-PI
GoSMART ProjectEuropean Commission5.4 million Euros2014-2016Co-PI
ClinicIMPPACTEuropean Commission3.7 million Euros2014-2017Co-PI
Space Agency Project-2A Space Agency10,000 Euros2018-2019Co-PI
Space Agency Project-3A Space Agency100,000 Euros2016-2018CFD-SDE
COVID-EMR APPIIT TirupatiRs. 50002020PI
NFIGIIT TirupatiRs. 5 Lakhs2020-2023PI
NFSGIIT TirupatiRs. 40 Lakhs2020-2023Co-PI
Smart Bin-Rs. 2 Lakhs2021-2026Co-PI
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List of Courses

Course NumberCourse NameSemester, Year UG/PG
MA5101Mathematics for EngineersJul-Dec, 2018PG
ES1101Computational EngineeringJan-Jun, 2019UG
MA5191Programming LaboratoryJul-Dec, 2019
PG
MA5101Mathematics for EngineersJul-Dec, 2019PG
MA1101CalculusJul-Dec, 2019UG
MA2040Numerical AnalysisJan-Jun, 2020UG
MA5023Differential Equations for EngineersJul-Dec, 2020PG
MA5191Programming LaboratoryJul-Dec, 2020
PG
MA6024Partial Differential EquationsJul-Dec, 2020PG
MA6204Numerical AnalysisJan-Jun, 2021
PG
MA5023Differential Equations for EngineersJul-Dec, 2021PG
MA5191Programming LaboratoryJul-Dec, 2021PG
MA6024Partial Differential EquationsJul-Dec, 2021PG
MA6204Numerical AnalysisJan-Jun, 2022PG
MA501L
Linear Algebra for EngineersJul-Dec, 2022PG
MA502LDifferential Equations for EngineersJul-Dec, 2022PG
MA503LProbability Theory for EngineersJul-Dec, 2022PG
MA507PProgramming LaboratoryJul-Dec, 2022PG
MA604MNumerical AnalysisJan-Jun, 2023PG
MA103LEngineering Mathematics-IJul-Dec, 2023UG
MA517MBasic Programming LaboratoryJul-Dec, 2023PG
MA612LPartial Differential EquationsJul-Dec, 2023PG
MA522MData Science Programming LaboratoryJan-Jun, 2024PG
MA604MNumerical AnalysisJan-Jun, 2024PG
MA206LNumerical MethodsJul-Dec, 2024UG
MA517MBasic Programming LaboratoryJul-Dec, 2024PG
MA612LPartial Differential EquationsJul-Dec, 2024PG
MA522MData Science Programming LaboratoryJul-Dec, 2024PG
MA633LNumerical AnalysisJul-Dec, 2024PG
MA635PScientific Programming LaboratoryJul-Dec, 2024PG
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BEST POSTER PRESENTATION AWARD

PRACEDAYS 2015
PRACEDAYS

DAAD RESEARCH AMBASSADOR
2022-2025

MSc Project Guidance

#Student NameTopicBatch
1Preethi JKBlood Flow Simulation using SPH Method2019-2020
2Navin S TFingerprint Recognition By Using Partial Differential Equation and Inpainting2019-2020
3Preetam JoshiBacklund Transformation and Its Applications2020-2021
4Tejaram GNavier-Stokes Equations and its Regularity Theory2020-2021
5Priya SinghWavelet Numerical Methods and Its Applications in Nonlinear Problems2021-2022
6Sandeep SNumerical Methods for Solving Nonlinear Differential Equations2021-2022
7HimanshuSolving Differential Equations using Neural Network2022-2023
8Manish SharmaSolving SIRV Differential Equation Model of COVID19 using Deep Learning2022-2023
9ShefaliML Project - On Going2023-2024
10Shanu YadavML Project - On Going2023-2024
11Rohit KumarDL Project - On Going2023-2024

PhD Guidance (Completed)

#Scholar NameTitle of the ThesisCurrent Status
1Snehil SrivastavaHyperbolic Lattice Boltzmann Method for Heat
Conduction Problem with Phase Change
Posdoc, University of Greenwich
2Gangadhara BVector Finite Element Method for Microwave AblationPostdoc, The University of Texas,
Rio Grande Valley

PhD Guidance (Ongoing)

#Scholar NameBroad Research AreaRemarks
1Jyoti PalFinite Pointset Simulation of the Thermoelastic Problems
in Haemodynamics
Co-Guide with Prof. S. Sundar
Writing Thesis
2PriyankaAdditive Manufacturing SimulationsWriting Thesis
3Saranya JSNumerical Simulations for RF and MWA First Year
4Sibasankar BaradaNumerical Wave TankFirst Year
Workshop on Numerical PDEs

Gallery

Numerical Methods

These animations allow students to interact with the models and clarify the difficult concepts for better understanding.

Regula-Falsi Method

Animation highlights the shrinking interval between the two points and the movement of the approximated root

Fixed Point Method

It gives the intersection of the function y=f(x) with the line y=x. Right figure shows the the movement of fixed point iteration for each step.

Bisection Method

This animation depicts how the interval shrinks every time based on the change of sign.

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