SHRIRAM HEGDE

Senior Programmer (Academic Staff)
Department of Applied Mechanics
Indian Institute of Technology, Delhi
Hauz Khas,
New Delhi 110 016
India

E-mail: hegde@am.iitd.ernet.in

Tel: +91 11 2659 1231 (O), 2659 1100 (R)

Academic Qualifications

1985 B.E. (Mechanical Engineering), University of Mysore
1989 M.E. (Mechanical Engineering), Birla Institute of Technology and Science, Pilani
2002 Ph.D., Fluid Dynamics, Indian Institute of Technology, Delhi

Experience

1989-1992 Senior Scientific Officer, Indian Institute of Technology, Delhi
1992-1997 Junior Programmer (Lecturer Grade), Indian Institute of Technology, Delhi
1997-Present Senior Programmer (Asst. Prof. Grade),Indian Institute of Technology, Delhi

Teaching and Research

• Main duty involves providing computational (both in hardware and software) support to the faculty members and other researchers at the Department of Applied Mechanics, IIT Delhi.
• My teaching is in the following coursers
• Mechanics of Fluids
• Hydrodynamic Stability
• Computer Aided Design and Analysis
• Finite Element Analysis
• Experimental Methods and Analysis

Research Interests

My research is in the general field of theoretical and computational fluid dynamics.

My specific interests are in the following topics:

• Stability studies of small disturbance waves in channel flow and boundary layer flow.
• Drag reduction using compliant surfaces
• Postponement of laminar to turbulent transition
• Studies related to absolute instability

My Ph.D project was on flow instability studies using compliant surfaces in the specific case of an alternate rigid and compliant panel arrangement. The method developed therein uses half-range Fourier transforms to model the junction between the rigid and compliant panels which is solved using the adjoint eigenfunctions. See the abstract of my thesis for more details.

Figure 1: Rigid – Compliant panel junction

Figure 2: Patterns of TS wave on alternate rigid – compliant panels with gradual increment of panel length.

Currently, some work is going on related to the absolute instability problem. The group velocity based approach to model the absolute instability uses again the adjoint method for finding group velocity.

Selected publications

• CARPENTER, P. W., SEN, P. K. HEGDE, S., AND DAVIES, C., Wave propagation in flows across junctions between rigid and flexible walls, Proc. of 5th Int. Symposium of FSI, AE \& FIV+N: 2002 ASME Int. Mech. Engg. Congress \& Exposition, New Orleans, accepted for publication.
• SEN, P. K. and HEGDE, S., Some thoughts on the linear and nonlinear stability of parallel and near parallel flows, J. Mech. Engg. Research and Developments, vol. 20-21, pp. 25-37, 1999.
• SEN, P. K., HEGDE, S., and CARPENTER, P. W., Simulation of small disturbance waves over alternate rigid and compliant panels, Proc. of 28th Nat. Conf. on FMFP, Chandigarh, India, pp. 92-98, 2002.
• SEN, P. K., HEGDE, S., CARPENTER, P. W. and PATHY G. S., Simulation of Tollmien-Schlichting waves over alternate rigid and compliant panels, Proc. of 28th Nat. Conf. on FMFP, Chandigarh, India, pp.104-109, 2002.
• SEN, P. K., HEGDE, S. and CARPENTER, P. W., Simulation of small disturbance waves over alternate rigid and compliant panels, J. Mech. Engg. Research and Development, BUET, Bangladesh, Accepted for publication.
• SEN, P. K., HEGDE, S. and CARPENTER, P. W., Some theoretical and numerical aspects for the jump conditions between alternate rigid-compliant panels, J. Mech. Engg. Research and Development, BUET, Bangladesh, Accepted for publication.

Professional Memberships

• Life Member, National Society for Fluid Mechanics and Fluid Power (India)
• Life Member, Indian Society of Mechanical Engineers