New Book titled "High Accuracy Computing Methods: Fluid Flows and Wave Phenomena" is published by Cambridge University Press.
"Instabilities of Flows and Transition to Turbulence" is published by CRC Press/ Taylor & Francis.
Monograph titled "Instabilities of Flow: with and without Heat Transfer and Chemical Reaction" is published by Springer Wien-New York.
Textbook titled "Fundamentals of CFD" published by Universities Press, Hyderabad, India.
"International Conference On Metacomputing"
"National Symposium on HPC in Academia and Beyond"
MIT PRESENTATIONS (click on the links below)
Advances in Computation, Modeling and Control of Transitional and Turbulent Flows
DATES: 15-18 December, 2014; VENUE: Hotel MARRIOTT, Goa.
HOST INSTITUTE: IIT Kanpur (with support of Stanford University, USA)
CONFERENCE CHAIRS: Profs. S K Lele (Stanford U.) & T K Sengupta (IIT Kanpur)
SYMPOSIUM WEBSITE URL: http://spectral.iitk.ac.in/hpcl/IUTAM2014
Third International Conference on Meta Computing 2012, held in Bhubaneswar. Conference Co-Chair: Prof. Tapan K Sengupta
Best papers: Drs. V. Mudkavi/ K. Venkatesh (NAL Bangalore) and Pramod Bagade/ B. Satish (IIT Kanpur)
The IIT Kanpur, HPCL group has provided definitive answers to CAUSALITY of turbulence
in wall bounded boundary layers. Through the work on Bromwich contour integral method
(developed in IITK since 1990) spatio-temporal wave-front (STWF) have been shown as the main
precursor to transition and turbulence (PRL, 2006, 2011 and the CRC text book, see the side-bar).
High accuracy computing of Navier-Stokes equation also attest to formation of STWF leading to fully-developed
turbulence via deterministic excitation of laminar flow in RECEPTIVITY framework.
• Article Usage for: "Diffusion in inhomogeneous flows: Unique equilibrium state in an internal flow," Tapan K. Sengupta, Himanshu Singh, Swagata Bhaumik, Rajarshi Roy Chowdhury, Click here
• The book titled "Theoretical and Computational Aerodynamics" is to be published by Wiley, UK. There are chapters on computational aerodynamics, NLF and transitional flow related to aerodynamics, transonic aerodynamics and low Reynolds number unsteady aerodynamics, topics of current interests, not dealt with many books on the subject. The book is scheduled for 2015. The manuscript is with the publisher.
• Prof. Sengupta spent the summer at McGill University as a Visiting Professor working on lattice Boltzmann method. The work on LBM has begun.
The book: "High Accuracy Computing Methods: Fluid Flows and Wave Phenomena" is published by Cambridge University Press (2013) with an Indian edition available. This supersedes the book from Universities Press, India (2004). Foreword is written by Prof. Michel Deville. See:
• Swagata Bhaumik defended his Ph.D. thesis on 2D and 3D flow receptivity and transition. Dr. Bhaumik having spent some time with HPCL, is now in OSU working with Prof. Gaitonde. His path-breaking work on transition and turbulence is one of the major contributions by HPCL in recent times and is a culmination of HPCL research efforts over the past twenty five years, starting with the work of Ballav and Nijhawan on Bromwich contour integral methods. There are many who have participated in our transition/ receptivity research and we acknowledge all such contributions.
• Himanshu Singh, Ashish M. Bhole, B. Satish, G. Pallavi, Abir Ranjan Das graduated with M. Tech. degree in 2013. Ashish continues to be with HPCL and his work on transonic aerodynamics has been published in Computers and Fluids and received very favourably. His recent work on error dynamics will be published in JCP.
• Swagata, Rajarshi and Himanshu's work on rectangular lid driven cavity is published in Computers and Fluids. This work highlights the enstrophy cascade mechanism for inhomogeneous flow and should be considered a significant improvement over existing ideas on energy cascade based on work for homogeneous isotropic turbulence. Of specific interest is that this cascade is equally true for 2D and 3D flows -- removing a constraint in fluid dynamic studies for small scale formation in 2D flows.
• IUTAM symposium on Advances in Computation, Modeling and Control of Transitional and Turbulent Flows will be held in Marriott Goa, India during 15-18 December, 2014. Preparations are in full swing.
• A 40 parts lecture series on Foundations of Scientific Computing taught to IIT Kanpur undergraduate students (2009) as a science elective is available in you tube and in:
• TKS visited in 2012: (i) Ecole Polytechnique, Montreal (June-July, 2012); (ii) Center for Advanced Studies in Theoretical Sciences (CASTS) and Taida Institute of Mathematical Sciences (TIMS) at National Taiwan Univ., Taipei, Taiwan for Progress in Mathematical and Computational Studies on Science and Engineering Problems, biennial conference, 5 - 7 November, 2012. Photo
• Manoj Rajpoot defended his Ph.D. thesis "Dispersion Relation Preserving Schemes for Non-Dispersive and Dispersive Systems" in 2012. He currently teaches mathematics in an educational institute.
• K. Subramani, Rikhi Bose, Rayan Chatterjee and V. K. Sathyanarayanan graduated with M. Tech. degree in 2012. Sathya continued at HPCL till January, 2014, extending his work on receptivity.
• HPCL bid farewell to Dr. Yogesh Bhumkar on 6th August from HPCL. Dr. Bhumkar did his Ph.D. during 2006-2012 at HPCL in the area of bypass transition in aerodynamics. After a short stint at NTU at Taipei, he is currently a faculty member in IIT Bhubhaneswar.
• The book: "Instabilities of Flows and Transition to Turbulence" published by CRC Press, Taylor & Francis Group, USA is available. Details of the book are in:
• Prof. T. K. Sengupta has helped Tata McGraw-Hill for the Indian edition of Fundamentals of Aerodynamics by Prof. J. D. Anderson, augmented with SI Metrication and a chapter on Aerodynamic Research Activities in India written by him.
• Prof. Tapan K. Sengupta is the regional editor of Computers and Fluids, Elsevier . He is also the associate editor of Int. J. of Emerging Multidisciplinary Fluid Sci., Multi-Science, UK .
•Prof. Michel Deville's visit to HPCL in 2010: Prof. Michel Deville ( Ecole Polytechnique Federale de Lausanne, Switzerland) visited HPCL and delivered lectures on Spectral Element Method . He had extensive discussions with HPCL members during his visit. Photo
•Recent trends in HPC at HPCL, IIT Kanpur, Sep 2009: Account of work done in HPCL, IIT Kanpur, on methods for DNS/ LES was displayed in the Workshop on "High Performance Computing in India" in conjunction with "Supercomputing 2009" (SC09), Nov. 14-20, 2009 (USA).
• Issues related to DNS / LES were the central themes of the plenary talk given at the Fifth M.I.T. conference at Boston, June 2009
1. Three-time level methods like second order Adam-Bashforth schemes are often incorrectly used for "DNS". Following papers show that the numerical/ spurious modes remove large fraction of initial condition at higher frequencies. Details are in HIGH ACCURACY COMPUTING METHOD (CUP, 2013) and the following papers:
a) A Comparative Study of Time Advancement Methods for Solving Navier-Stokes Equations
b) High Accuracy Schemes for DNS and Acoustics
2. The von Neumann analysis for PDEs has been corrected, with the help of 1D convection equation. See the CUP book and the following from J. Computational Physics:
a) Error Dynamics: Beyond von Neumann Analysis -- T.K. Sengupta, A. Dipankar and P. Sagaut, 226, 1211-1218 (2007)
Dowload Error dynamics: Beyond von Neumann analysis paper from Science Direct