Viswanath Ramakkagari Ph.D., Department of Computer Science Rensselaer Polytechnic Institute Troy, NY 12180 Email: id@cs.rpi.edu  where  id = ramakv

History

I came to RPI in Fall 2002.  In May 2007 I obtained my Ph.D.  from the Department of Computer Science
with concentration in Computational Science

Education

• Ph.D.,  Computer Science, Rensselaer Polytechnic Institute, Troy, NY, USA, 2007
  
• M.S., Mechanical and Aerospace Engineering, University at Buffalo, Amherst, NY, USA, 2002
• B.Tech., Mechanical Engineering, Indian Institute of Technology - Madras, Chennai, India, 2000

Dissertation

    Singularly perturbed convection-diffusion problems are very challenging to solve because the governing partial
    differential equation is not self-adjoint. Oscillations occur in the finite element solution when solved by conventional
    methods. To reduce/eliminate these  oscillations we require a fine mesh in the regions containing the layers.
    We proposed a  method to eliminate these oscillations while using a coarser mesh and the large errors
    were confined to the few elements containing the boundary layers.

   Title: A new stability method for singularly perturbed convection-diffusion equations.
   Adviser: Professor Emeritus Joseph E. Flaherty
  
   Overview: Proposed a new approach for solving singularly perturbed convection-diffusion problems in the finite
   element framework. This involved the modification of the test function spaces resulting in a Petrov-Galerkin
   method. The test function space was chosen to provide a good approximation to the solution of a suitable dual
   problem. Also proposed an error estimation strategy for these problems in the proposed finite element
   framework.

Research Interests

     My interests are very broad and some of the topics that interest me are:

• Mathematical modeling
  
• Scientific computation
• Numerical Methods
  
• Solving problems involving multiple scales
• Error Estimation
• High Performance Computing
• Algorithms, C++ Programming, Software development
• Problems which require an interdisciplinary approach
  

       My interests can be broadly termed as using mathematics, computers to solve problems in engineering and science.

Teaching Experience  

       I enjoy teaching and had the opportunity to be a teaching assistant for graduate and undergraduate courses:

• Teaching Assistant, Spring 2005 - Beginning C for Engineers
• Teaching Assistant, Fall 2004 - Beginning C for Engineers
  
• Teaching Assistant, Spring 2003 - Data Structures and Algorithms
• Teaching Assistant, Fall 2002 - Data Structures and Algorithms
• Teaching Assistant, Spring 2002 - Elasticity 1 (Graduate Course)
  
• Teaching Assistant, Fall 2001 - Topics Finite Elements (Graduate Course)
  
• Teaching Assistant, Spring 2001 - Materials Lab
• Teaching Assistant, Fall 2000 - Materials Lab