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Biomimetics & Dynamics Laboratory



A free-surface water tunnel test section size of 0.25x 0.5 x 0.75 (dimensions in m) at low speeds of the order of 10 to 600 mm/sec,



A low turbulence open and closed jet tunnel of section (0.75x0.75x2). Speed upto 25m/s.

The tunnel is equipped with a gust chamber with frequency controlled gust.

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High speed computing, local clusters and connectivity with IIT Madras super clusters.

Laser based displacement and aerodynamic load measurement sensors.



PIV measurement eqipments

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ML package for moving body (Immersed Boundry Aware ML)
-combines unsteady aerodynamics simulations and machine learning workflows
-pyIBAML for an ML pipeline to imeplement  python based Immerrsed Boundary Aware framework of PINNs for flow-field surrogtes


Computing sofwares and hardwares:

(Biomimetics Lab on github)

We use an in-house Immersed-Boundary Method (IBM) based unsteady Navier-stokes solver along with Finite Difference algorithm based structural solver for high-fidelity low Re unsteady complex flow and FSI simulations involving moving boundaries.

In-house repository on FSI and multi-phyics situations:
Python based ML package pyIBAML 

OpenFOAM has also been used for ALE based simulations when in need of a body conformal mesh technique.

Recently acquired a state-of-the art cluster, Synchrony, with 60:40 ratio of CPU and GPU nodes for high-end high fidelity unsteady simulations of complex flow-fields involving multi-scale and multi-frequency behaviour of vortex interactions. Presence of several time scales and strong time dependency makes the problems computationally heavy.

There are a few other smaller scale computing facilties in place for the lab members, including high-end workstations for individual use. 

Members also have access to the clusters provided by the IIT Madras' HPC facility (P G Senapathay Computer Center).

Present Members
  • Chhote Lal Shah, PhD candidate. Topic: Bio-mimetic and biological swimmers
  • Varun H S, PhD candidate. Topic: Complex networks in nonlinear aeroelasticity
  • Rahul Sundar, PhD candidate. Topic: Surrogate modelling using machine learning
  • Rajanya Chatterjee, PhD candidate. Topic: Energy harvesting from flow induced oscillations
  • Sourav Dey, PhD candidate. Topic: Bifurcation and chaos in flows past self-propelled systems
  • Aravind Arasu, MS Research candidate. Topic: Network based reduction for vortical flows
  • Moiddin Nihal, Dual degree Btech-Mtech. Topic:Network models for flows past arbitrary moving/deforming bodies
Former PhD Students
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M.S. Aswathy, 2022
Thesis: Vortex induced vibrations of a circular cylinder under stochastic inflow.

Post-Doctoral researcher at Okinawa Institute of Sceince and Technology, Japan.

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Dipanjan Majumdar, 2022
Thesis: Investigating the transitional dynamics in the flow-field past a flapping foil using Immersed Boundary Method.

Post-doctoral researcher at Imperial College London, UK.

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Chandan Bose,  2019
Thesis: Dynamical Analysis of the Unsteady Flow Phenomena around a Flapping Wing
Thesis co-advisor: Prof. S. Gupta, Department of Applied Mechanics, IIT Madras.
Post-doctoral researcher: University of Liege, University of Edinburgh.
Assistant Professor at the University of Birmingham.

W. Dheelibun Remigius, PhD, 2018.
Thesis: Bifurcation analysis of a nonlinear spinning disc immersed in bounded compressible medium

Post-doctoral researcher: Technical University of Denmark
Employed in a research position at Shell, Bengaluru, India.

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J. Venkatramani, PhD, 2018.
Thesis: Intermittency in a pitch-plunge aeroelastic system
Thesis co-advisor: Prof. S. Gupta, Department of Applied Mechanics, IIT Madras.
Assistant Professor at Shiv Nadar University, Noida, India, Amrita Vishwa Vidyapeetham, India.

Hridya P. Lal, PhD, 2018.
Thesis: Reduced order modelling in stochastically parametered vibrating fluid structure interaction systems
Thesis co-advisor: Prof. S. Gupta, Department of Applied Mechanics, IIT Madras.

Post-doctoral researcher at Indian Institute of Science Bangalore, India


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Jithin Jith, PhD 2018
Thesis: Acousto-elastic interactions in high pressure centrifugal compressors.
Also Post-Doctoral Fellow in our group

Employed at Schlumberger, India.

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Santhosh J. Ilango, PhD, 2017.
Thesis: Stochastic analysis of flow through porous media using random solid-pore geometry as the input

Former Post-doctoral Researchers
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Kumar Sourav, Post-Doc 2020-2021
Area of Research: Stochastic Vortex Induced Vibrations

Subsequently joined Clemsson University as a Post-doctoral researcher 

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Jithin Jith, Post-Doc 2018
Area of Research: Stochastic fin buffeting

Employed at Schlumberger, India.

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Anuj Bajpai, Post-Doc 2017
Area of Research:  Unstedy aerodynamics 

Employed at Konverge.AI, India.

Former M S Research Students
  1. Virendra Singh, MS Resaech candidate. Topic: Non-intrusive reduced order modelling
  2. Avisha Ghorpade 2020.   Area of work: Stochastic modelling of fin buffeting.                               Co-advisor: Prof. S. Gupta, Department of Applied Mechanics, IIT Madras.
  3. M. T. Thanusha, 2018 (Thnusha is the winner of Pratibha, the Eaton excellence award for academic merit, 2015).      Title: Sampling strategies for discontinuous response surfaces encountered in an aeroelastic system with subcritical nonlinearity.         Area of work: Interpolation based response surface tools for uncertainty quantification with subcritical bifurcations
  4. Salil Harris, 2015.     Title:  Study of wake patterns past rigid and flexible flapping airfoils.   Area of work: Unsteady aerodynamics and bifurcations
  5. Harshini Devathi, 2014.     Title: A stall induced fluid structure interaction system under the influence of parametric uncertainties and random gust. Area of work: Novel adaptive polynomial chaos expansion approach and probability density evolution method (PDEM) for stochastic fluid structure interaction problems
  6. S. Venkatesh, 2013.    Title: Uncertainty quantification of an aeroelastic system under random gust using polynomial chaos expansion.  Area of work:  Random fatigue analysis in fluid structure interaction system
  7. Lalit K. Chandravanshi, 2011.       Title: Study of wake patterns behind an oscillating airfoil with and without gust effects.  Area of work: Gust alleviation capabilities of flapping wings
  8. Ajit Desai 2011.   Title: Analysis of a nonlinear aeroelastic system under parametric uncertainties using polynomial chaos expansion.  Area of work: Nonlinear aeroelasticity and limitations of spectral uncertainty quantification techniques
Former M. Tech students
  1. Tarandeep Singh, 2018-2019, Energy harvesting from vortex induced vibration.
  2. 2. Satish Jaiswal, 2018-2019, Aeroelastic behaviour of a fin structure.
  3. 3. Piyush Tanwar, 2018, Lift augmentation and delaying flow separation by moving surface of an airfoil.
  4. 4. Abhigyan Belawal, 2018, Computational study of locomotion of fishes. 
  5. 5. Shubham Jain, 2017, Investigation of fluid structure interaction solvers with application in Micro Aerial Vehicles in OpenFOAM.
  6. 6. Vishnu Menon, 2017, Aeroelastic flutter phenomenon under gusty wind.
  7. 7. Piyush Jadhav, 2016, Quasi-steady fluid structure interaction of surf kites. Co-supervisor: Prof. P. Ramu, Engineering Design, IIT Madras.
  8. 8. Sandip Badrinath, 2015, A study on the transitional dynamics of the flow past a flapping airfoil at high Strouhal numbers.
  9. 9. Neel Harsh Patel, 2014, Dynamical behaviour of a structurally nonlinear airfoil under the influence of different types of gusts.
  10. 10. Naseef Hussain 2013, Reduced order modeling for dynamic analysis of engineering structures.
  11. 11. Derec Mathew 2013, Natural frequencies of centrifugal compressor impellers for high pressure applications.
  12. 12. Ajay Anthony, 2013, Response of wind turbine blades under stochastic wind.
  13. 13. Rohit Shukla, 2013, Nonlinear flutter analysis of leading edge vortex controller.
  14. 14. V. Abhishek, 2013, Uncertainty quantification in multi-scale modelling.                       Co-supervisor: Pro. S. Gupta, applied Mechanics, IIT Madras.
  15. 15. Mayank Patel, 2012, Nonlinear dynamics of control surface aeroelasticity and uncertainty quantification.
  16. 16. A. Anandraj, 2012, Stability analysis of an artillery rocket with different wrap-around fin configurations.
  17. 17. Amit Singh, 2011, Time-domain simulation of an airfoil using fluid-structure coupling through a twodimensional vortex lattice method and the effect of parametric uncertainty.
  18. 18. Vineeth V. Nair, 2010, Uncertainty Quantification of Subcritical Bifurcation in a Rijke Tube.                                                                                                                                                           Co-supervisor: Prof. R. I. Sujith, Aerospace Engineering, IIT Madras.
  19. 19. Anush Krishnan, 2009, Simulation of flow over a flapping airfoil using a discrete vortex method.  
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Lab Address

Biomimetics Laboratory,
Composite Technology Center (CTC) Building, Room 121,
Department of Aerospace Engineering, Chennai 600036, India.  

Lab Contact

Email: sunetra.sarkar@gmail.com Phone: +91 44 2257 5023, +91 44 2257 4024 
Fax: +91 44 2257 4002  

FaceBook Page

News

1. Biomimetics Lab featured in HPCE Highlights of IITM.
Read here.
2. Biomimetics Lab featured in `Immerse' (IIT Madras' Technical Magazine).
Read the full article here.

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