SUBBIAH. M Professor

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  • Department of Mathematics
  • Ramanujan School of Mathematical Sciences
  • malaisubbiah@gmail.com

Academic Activity

Academic Activity Picture1

Academic Activity Picture2

Educational Qualification (UG,PG & Higher Order)

S.No Degree Subject/Title of thesis University/Board Year of Passing
1 Ph.D. Mathematics. On the Linear Stability of Inviscid Parallel Shear Flows Indian Institute of Technology 1987
2 M.Sc. Applied Mathematics Madurai Kamaraj University 1981
3 B.Sc. Mathematics. Madurai Kamaraj University 1979

Area of Specializaion

Hydrodynamic Stability; Shear Instability Analysis ;Arnold's Method; Nonlinear Critical Layer Theory

Awards / Prizes Conferred

S.No Name / Title of the Award Type Name of the Agency conferred the Award Year of the Award Amount for Cash Award

Teaching Experience

S.No Designation Department/Centre Institution
1 Professor Department of Mathematics Pondicherry University
2 lecturer Department of Mathematics Pondicherry University
3 Reader Department of Mathematics Pondicherry University

Research Experience

S.No Designation Department/Centre Institution Area of Research
1 Professor Department of Mathematics Pondicherry University Hydrodynamic Stability,Nonlinear Critical Layers
2 Research Scholar Department of Mathematics Indian Institute of Technology, Kanpur. Hydrodynamic Stability
3 Lecturer Department of Mathematics Pondicherry University Hydrodynamic Stability
4 Reader Department of Mathematics Pondicherry University Nonlinerar Stability

Industry Experience

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Contribution towards Innovation

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Patent Details

S.No Title Status Patent Number Year of Award Type Commercialized Status

Papers Published in UGC Approved Journals

S.No Title Name of the Authors as per the order in Paper Journal Name Volume, Issue & Page Nos. Year Impact Factor
1 On the hydrodynamic and hydromagnetic stability analysis of inviscid compressible annular flows S.Prakash and M.Subbiah Proceedings of National Academy of Sciences, India - Section A 93(4):601 - 611 2023 1.291
2 On the swirling flow analogue of the howard's conjecture in hydrodynamic stability P. Pavithra and M. Subbiah The Mathematics Student vol.92 nos.1-2,153 - 165 2023 NA
3 Eigenvalue bounds for the circular orr-sommerfeld problem of hydrodynamic stability P. Pavithra and M. Subbiah The Journal of Analysis 30: 1687-1708 2022 NA
4 Eigenvalue bounds in an azimuthal instability problem of inviscid flows S.Prakash and M.Subbiah Journal of the indian mathematical society 89:387 - 405 2022 NA
5 Note on instability regions in the circular Rayleigh problem of hydrodynamic stability P. Pavithra and M. Subbiah Proceedings of National Academy of Sciences, India - Section A 91: 49-54 2021 1.291
6 On compressible circular Rayleigh problem of hydrodynamic stability P. Pavithra and M. Subbiah Sadhana - Indian Academy of Sciences 46: Article No. 178 2021 1.214
7 Bounds on complex eigenvalues in a hydromagnetic stability problem S.Prakash and M.Subbiah The Journal of Analysis 29: 1137–1150 2021 NA
8 Note on eigenvalue bounds in the stability problem of swirling flows P. Pavithra and M. Subbiah The Journal of Analysis 28: 727–732 2020 NA
9 On neutral and unstable modes and on the Temple. ... VRK Reddy and M Subbiah Proc National Academy Sci.India A Volume 89.issue, pp 777 to 790 2019 0.3
10 On sufficient conditions for stability in the circular Rayleigh problem of hydrodynamic stability P. Pavithra and M. Subbiah The Journal of Analysis 27: 781-795 2019 NA
11 On shear instability and propagation of surface gravity waves. ......... VRk Reddy and M Subbiah European Physical Journal plus 133(11),475 2018 2.5
12 Stability of stratified shear flows in channels with variable cross sections V. R. Reddy and M. Subbiah Applied Mathematics and Mechanics - Springer 36: 1459–1480 2015 3.918
13 On Reynolds stress and neutral azimuthal modes in the stability problem of swirling flows with radius-dependent density H. Dattu and M. Subbiah Sadhana - Indian Academy of Sciences 40: 1913-1924 2015 1.214
14 A note on the stability of swirling flows with radius-dependent density with respect to infinitesimal azimuthal disturbances H. Dattu and M. Subbiah ANZIAM Journal 56: 209-232 2015 0.542
15 On nonlinear critical layer analysis of incompressible swirling flows with radius-dependent density H. Dattu and M. Subbiah The Journal of Analysis 22: 35-68 2014 NA
16 Series solutions and a perturbation formula for the extended Rayleigh problem of hydrodynamic stability V. Ganesh and M. Subbiah Proceedings Mathematical Sciences, India. 123, 293–302 2013 0.626

Papers Published in Non UGC Approved Peer Reviewed Journals

S.No Title Name of the Authors as per the order in Paper Journal Name Volume, Issue & Page Nos. Year Impact Factor
1 On Estimates for Growth Rates of Unstable Azimuthal Disturbances in the Stability Problem of Swirling Flows with Radius-Dependent Density H. Dattu and M. Subbiah Mapana Journal of Sciences 13 (3): 1-12 2014 NA
2 On the stability of a compressible axial flow with an axial magnetic field M.Subbiah and M.S.Anil Iype Journal of Fluids Volume 2013 ID869324 - 8PAGES 2013 NA

Papers Published in Conference Proceedings

S.No Title Name of the Authors as per the order in Paper Details of Conference Publication Page Nos. Year
1 Long wave instability of shear flows in sea straits V. R. Reddy and M. Subbiah Proc. 59th Conf. Ind. Soc. Theo. and Appl. Mech 1-10 2014

Books

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Chapters in Books

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Edited Books

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Ongoing Projects

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Ongoing Consultancy Works

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Completed Projects

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Completed Consultancy Works

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Career Guidance Offered to students

S.No Name of the Scheme No. of Students Competitive Examinations/ Career Counseling No. of Students Passed No. of Students Placed

List of capability enhancement such as Soft skill development, Remedial coaching, Language lab,
Bridge courses, Yoga, Meditation, Personal Counselling and Mentoring etc.,

S.No Name of the Programme/Scheme Date of Implementation No. of Students Enrolled Agencies Involved

Research Guidance - PG

S.No Year Degree No. of Students Awarded Department/Centre
1 2018 M.PHIL 24 Department of Mathematics

Research Guidance - Ph.D

S.No Student Name Registration Date Registration No. Thesis Title Thesis Submitted Status Thesis Submitted Date Vivavoce Completed Status Date Awarded
1 Prakash S 30-07-2018 1800118002 On the hydrdynamic and hydromagnetic stability analysis of annular flows YES 21-12-2022 YES 20-07-2023
2 Pavithra P 24.8.2015 20151118004 On the linear stability analysis of axial flows between concentric cylinders to axisymmetric disturbances YES 15.12.2020 YES
3 Padmini.M, 1.12.1988 On the linear and nonlinear stability analysis of fluid flows YES 1.5 1984 YES 18.6.1995
4 Anil Iype .M.S. 1.6.2002 Some analytical and numerical results on the hydrodynamic and hydromagnetic stability of inviscid swirling flows YES 14.9.2009 YES 14.3.2011
5 Ramakrishna Reddy.V 1 10 2009 On the linear and nonlinear stability analyses of inviscid incompressible shear flows in channels with variable cross sections YES 1.4 2014 YES 13.11.2015
6 Halle Dattu 1.10.2009 On the linear and nonlinear instability analyses of incompressible swirling flows YES 1.12.2014 YES 12.9.2016

Research Guidance - Post Doctoral

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Financial assistance availed to attend conferences / workshops and to pay membership fee
of professional bodies during the year

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E-Lecture Details

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Details of Online Education Conducted

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Invited Talks in Conference/Seminar/Workshop/Training Programme

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Conferences/Seminars Organized

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Workshop Organized

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Administrative Responsibilities in the Government and Quasi Government Agencies

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Affiliation in Academic Bodies/Societies

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Participation & Extension Activities (Academic/Administraion)

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Collaboration with Institution/Industry

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Faculty Development Programme Attended (Orientation, Refresher, other Short Term Course during the year)

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Details of Executive Development Prog/Management Development Prog. conducted

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Participation in IMPESS, IMPRINT, SPARC, STARS, LEAP Programme etc and DSF Funding Programme

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Enrolment under ARPIT Programme

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