Refereed Journal Publications

2020

8. Dynamic interlinking between near and far-field wakes behind a pitching-plunging airfoil


Chandan Bose ; Sayan Gupta; Sunetra Sarkar

Journal of Fluid Mechanics , under review, 2020.

This study establishes a dynamic link between the near and far-field wake transitions and investigates the role of aperiodic jet-switching in ushering in chaos in the wake of a pitch-plunge flapping system. The mechanism of jet-switching and the role of leading-edge vortex are also revealed in this paper.

7. Capturing the Dynamical Transitions in the Flow-field of a Flapping Foil using Immersed Boundary Method


Dipanjan Majumdar; Chandan Bose ; Sunetra Sarkar

Journal of Fluids and Structures , Volume 95, Pages 102999, 2020.

https://doi.org/10.1016/j.jfluidstructs.2020.102999

This study explores the scope of body non-conformal mesh methods in comparison to body-fitted approaches in capturing complex flow topologies, especially, during aperiodic transition in the unsteady flow-field of a flapping foil.

2019

6. Transition to chaos in the flow-induced vibration of a pitching-plunging airfoil at low Reynolds numbers : Ruelle-Takens-Newhouse scenario


Chandan Bose ; Sayan Gupta; Sunetra Sarkar

International Journal of Non-Linear Mechanics , Volume 109, Pages 189 - 203, 2019.

DOI: 10.1016/j.ijnonlinmec.2018.11.012.

This study reports a Ruelle-Takens-Newhouse quasi-periodic route during the transition from periodic to chaotic dynamics in the fluid-elastic response of a 2-dof flexibly-mounted airfoil with very low solid-to-fluid added mass ratio through robust nonlinear dynamic analysis.

2018

5. Investigating chaotic wake dynamics past a flapping airfoil and the role of vortex interactions behind the chaotic transition


Chandan Bose ; Sunetra Sarkar

Physics of Fluids , Volume 30, Issue 4, 047101, 2018.

DOI: 10.1063/1.5019442.

This study revealed that slightly erratic leading edge separation could trigger a complete chaotic breakdown of the wake of a flapping wing that mimics natural flyers like birds and insects. Fundamental vortex interaction mechanism that sustains chaos in the wake have also been identified in the study.


4. Dynamical behaviour of unsteady flow-field of an elastically mounted flapping airfoil


Chandan Bose ; Sayan Gupta; Sunetra Sarkar

AIAA Journal , Volume 56, Issue 5, Pages 2062-2069, 2018.

DOI: 10.2514/1.J056664

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2017

3. Transient and stable chaos in dipteran flight inspired flapping flight


Chandan Bose ; Vikas Reddy; Sayan Gupta; Sunetra Sarkar

Journal of Computational and Nonlinear Dynamics , Volume 13, Issue 2, 021014, 2017.

DOI: 10.1115/1.4038447.

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2. Investigations on a vortex induced vibration based energy harvester


S Krishna Kumar; Chandan Bose ; Shaikh Faruque Ali; Sayan Gupta; Sunetra Sarkar

Applied Physics Letters , Volume 111, Issue 24, 243903, 2017.

DOI: 10.1063/1.5001863.

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1. Identifying the route to chaos in the flow past a flapping airfoil


Sandeep Badrinath; Chandan Bose ; Sunetra Sarkar

European Journal of Mechanics/ B-Fluids , Volume 66, Pages 38-59, 2017.

DOI: 10.1016/j.euromechflu.2017.05.012

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Indexed Proceedings

  1. Chandan Bose, Sunetra Sarkar, Sayan Gupta, Stochastic bifurcation analysis of an elastically mounted flapping airfoil in an inviscid fluid , MATEC Web of Conferences , 148, 08001, DOI: 10.1051/matecconf/201814808001, 2018.

  2. Chandan Bose, Sunetra Sarkar, Flow Periodicity Analysis Past a Flapping Airfoil Using Proper Orthogonal Decomposition , AIAA Meeting Paper (AIAA 2017 - 3647) , DOI: 10.2514/6.2017-3647, 2017.

  3. Chandan Bose, Sayan Gupta & Sunetra Sarkar, Quasi-periodic Vortical Signature of an Elastically Mounted Flapping Airfoil , AIAA Meeting Paper (AIAA 2017 - 3644) , DOI: 10.2514/6.2017-3644, 2017.

  4. Chandan Bose, Sunetra Sarkar, Flexible flapping wings can exhibit quasi-periodic motion! , Journal of Physics Conference Series , 759(1):012082, DOI: 10.1088/1742-6596/759/1/012082, 2016.

  5. Chandan Bose, Sayan Gupta, Sunetra Sarkar, Dynamical stability analysis of a fluid structure interaction system using high fidelity Naviers-Stokes solver , Procedia Engineering , 144, pp. 883-890, DOI: 10.1016/j.proeng.2016.05.107, 2016

Book Chapters

  1. Chandan Bose , Rajanya Chatterjee, Sayan Gupta & Sunetra Sarkar, Investigating fluid-structure interaction behavior of a chord-wise flexible filament in the wake of a bluff body using partitioned strong-coupling approach , Proceedings of the 7th ICCMS 2019, Accepted for publication as a book chapter, In book: Recent Advances in Computational Mechanics and Simulations , Springer Nature, 2020.

  2. Dipanjan Majumdar, Chandan Bose & Sunetra Sarkar, Probing into the efficasy of discrete forcing Immersed Boundary Method in capturing the aperiodic transition in the wake of a flapping airfoil , Proceedings of the 7th ICCMS 2019, Accepted for publication as a book chapter, In book: Recent Advances in Computational Mechanics and Simulations , Springer Nature, 2020.

  3. Chandan Bose , Sayan Gupta & Sunetra Sarkar, Transitional flow dynamics past a passively flapping airfoil in gusty flow , Proceedings of IUTAM Symposium 2018, Accepted for publication as a book chapter, In book: Advances in Critical Flow Dynamics Involving Moving/Deformable Structures, Notes on Numerical Fluid Mechanics and Multidisciplinary Design , Springer Nature, 2020.

  4. Chandan Bose , Sayan Gupta & Sunetra Sarkar, Fluid-structure interaction dynamics of a flexible foil in low Reynolds number flows, Proceedings of ICTACEM 2017, In book: Recent Advances in Theoretical, Applied, Computational and Experimental Mechanics, Lecture Notes in Mechanical Engineering , Springer Nature, 2020, DOI: https://doi.org/10.1007/978-981-15-1189-9_37.

  5. Dipanjan Majumdar, Chandan Bose , Prerna Dhareshwar, Sunetra Sarkar, Fluid-body interactions in fish-like swimming , Proceedings of ICoVP2017, Accepted for publication as a book chapter, In book: Advanced Topics in Structural Vibration, Lecture Notes in Mechanical Engineering , Springer Nature, 2020.

  6. Chandan Bose , S. Krishna Kumar, Sunetra Sarkar and Sayan Gupta, Interaction of a Flexible Splitter Plate with Vortex Shedding Past a Rigid Circular Cylinder , In Book: Recent Advances in Structural Engineering Volume 2, Eds. A. Rama Mohan Rao and K. Ramanjaneyulu, Springer Nature, Singapore, 2018. ISBN: 978-981-13-0364-7, DOI: 10.1007/978-981-13-0365-4_71, 2018.