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Subhadeep Roy

Post Doctoral Fellow,

The Institute of Mathematical Sciences (IMSc),

Homi Bhabha National Institute (HBNI), 

Chennai, Tamil Nadu, India.

Phone +91 7407262438

Email subhadeep.roy2807@gmail.com

Skype subhadeep.roy2807

Online ResearchGate • Google Scholars • Scopus •

ORCID • Publons

18198998_1502463806509805_16933588057649
about

ABOUT

My expertise is in the study of disordered systems and the dynamics it shows under external drive. Such disordered systems show very rich relaxation dynamics depending on the nature of the external driving parameters. I have mainly studied such systems numerically to understand two different phenomena:

(i) Statistical physics of fracture

(ii) Effective rheology during a multi-phase flow

Study in both fields involves practical application and hence interests the academic, medical, and industrial community. 

resumé

Resume

Research Interests

  • Statistical modeling for fracture

  • Disordered systems

  • Phase transition and critical phenomena

  • Linear elastic fracture mechanics (LEFM)

  • Effective rheology of multi-phase flow

  • Porous media

  • ​Earthquake statistics

Academic Skills

  • Monte Carlo simulation

  • Molecular Dynamics simulation

  • Fracture simulation in continuum media (LEFM)

  • Dynamic Pore Network (DPN) simulation

  • COMSOL multi-physics

Research Experience

  • Aug 2012 - Oct 2016

  • Nov 2016 - Feb 2018

Doctoral Fellow

The Institute of Mathematical Sciences, Chennai,

Homi Bhaba National Institute,

Thesis: Interplay of stress release range and disorder in fracture.

Research Associate

Earthquake Research Institute, University of Tokyo.

  • Aug 2018 - Dec 2020

Post Doctoral Fellow

Porous Media Laboratory, Norwegian University of Science and Technology

  • Jan 2021 - Feb 2021

Researcher

Porous Media Laboratory, University of Oslo.

  • Aug 2021 - Present

Post Doctoral Fellow

The Institute of Mathematical Sciences, Chennai.

Postdoctoral / Researcher Experience - 4 years 2 months

Education

  • Aug 2010 - July 2012

Master of Science

The Institute of Mathematical Sciences, Chennai,

Homi Bhaba National Institute

  • July 2007 - June 2010

Bachelor of Science

Kharagpur College, Vidyasagar University

Academic Visits

Talks Presented

I have presented talks during my visits at following institutes like - NTNU, CEA-Saclay, SINP, SNBNCBS, IMSc, SINTEF, Kyoto University, Nara University, Monhash University,  SRM AP, TIFR, CSRC.

Funded Proposals

  1. Proposal: Physical model for slow earthquakes: non-linear dynamics of fluid in subduction zones.     Funding Society: Japan Society for the Promotion of Science (JSPS).                                                                       Host Researcher: Takahiro Hatano, Department of Earth and Space Science, Osaka University.         Funded Position: Post Doctoral Position (2 years). Maximum Research Grant: 70,000,00 YEN

Recognitions

References

contact

Publications

  1. Soumyajyoti Biswas, Subhadeep Roy & Purusattam Ray, “Nucleation versus percolation: Scaling criterion for failure in disordered solids”, Phys. Rev. E 91, 050105(R) (2015). [pdf]

  2. Subhadeep Roy & Purusattam Ray, “Critical behavior in fiber bundle model: A study on brittle to quasi-brittle transition”, Europhysics Letters, Volume 112, Number 2, pp 26004 (2015). [pdf]

  3. Subhadeep Roy, “Predictability and strength of a heterogeneous system: The role of system size and disorder”, Phys. Rev. E 96, 042142 (2017). [pdf]

  4. Subhadeep Roy, Soumyajyoti Biswas & Purusattam Ray, “Modes of failures in disordered solids”, Phys. Rev. E 96, 063003 (2017). [pdf]

  5. Subhadeep Roy & Sanchari Goswami, “Fiber bundle model under heterogeneous loading”, J. Stat. Phys. Vol 170, Issue 6, pp 1197-1214 (2018). [pdf]

  6. Subhadeep Roy, “Stability in a fiber bundle model: Existence of strong links and the effect of disorder”, Phys. Rev. E 97, 052130 (2018) [pdf]

  7. Subhadeep Roy & Takahiro Hatano, “Creep-like behavior in athermal threshold dynamics: Effects of disorder and stress”, Phys. Rev. E 97, 062149 (2018). [pdf]

  8. Subhadeep Roy, Alex Hansen & Santanu Sinha, “Effective Rheology of Two-Phase Flow in a Capillary Fiber Bundle Model”, Front. Phys. 7, 92 (2019). [pdf]

  9. Subhadeep Roy, Soumyajyoti Biswas & Purusattam Ray, “Failure time in heterogeneous systems”, Phys. Rev. Research 1, 033047 (2019). [pdf]

  10. Subhadeep Roy, Santanu Sinha & Alex Hansen, “Flow-Area Relations in Immiscible Two-Phase Flow in Porous Media”, Front. Phys. 8, 4 (2020). [pdf]

  11. Subhadeep Roy & Takahiro Hatano, “Creep failure in a threshold activated dynamics: Role of temperature during a sub-critical loading”, Phys. Rev. Research 2, 023104 (2020). [pdf]

  12. Santanu Sinha, Subhadeep Roy & Alex Hansen, “Phase transitions and correlations in fracture processes where disorder and stress compete”, Phys. Rev. Research 2, 043108 (2020). [pdf]

  13. Santanu Sinha, Subhadeep Roy & Alex Hansen, “Crack Localization and the Interplay between Stress Enhancement and Thermal Noise”, Physica A 569, 125782 (2021). [pdf]

  14. Subhadeep Roy & Soumyajyoti Biswas, “Size distribution of emitted energies in local load sharing fiber bundles”, Front. Phys. 9, 643602(2021). [pdf]

  15. Subhadeep Roy, Santanu Sinha, and Alex Hansen, “Role of pore-size distribution on effective rheology of two-phase flow in porous media”, Front. Water 3, 709833 (2021). [pdf]

  16. Hursanay Fyhn, Santanu Sinha, Subhadeep Roy, Alex Hansen, "Rheology of immiscible two-phase flow in mixed wet porous media: Dynamic pore network model and capillary fiber bundle model results", Transport in Porous Media 139, 491–512 (2021). [pdf]

  17. Subhadeep Roy, “From nucleation to percolation: the effect of system size when disorder strength and stress localization compete”, Front. Phys. 9, 752086 (2021). [pdf]

  18. Narendra K. Bodaballa, Soumyajyoti Biswas, Subhadeep Roy, "Correlation between avalanches and emitted energies during fracture with variable stress release range", Front. Phys. 10, 768853 (2022). [pdf]

  19. Subhadeep Roy, Soumyajyoti Biswas, "Opinion dynamics: Public and private", Phil. Trans. Royal Soc. A. 380 (2224), 20210169 (2022). [pdf]

  20. Subhadeep Roy & Takahiro Hatano, “Model for creep failure with healing”, Phys. Rev. Res. 4, 023110 (2022). [pdf]

  21. Subhadeep Roy, Takahiro Hatano, Purusattam Ray, "Modeling crack propagation in heterogeneous materials: Griffith’s law, intrinsic crack resistance, and avalanches", Phys. Rev. E 105, 055003 (2022). [pdf]

  22. Subhadeep Roy, Håkon Pedersen, Santanu Sinha, Alex Hansen, "The Co-Moving Velocity in Immiscible Two-Phase Flow in Porous Media", Transport in Porous Media 143,  69–102 (2022). [pdf]

Submitted to Journals

  1. Subhadeep Roy, Santanu Sinha & Alex Hansen, “Immiscible two-phase flow in porous media: Effective rheology in the continuum limit”, arXiv:1912.05248 (2019). [pdf]

Conference Proceedings

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