Journal Articles
N. R. Rapaka & R. Samtaney (2020)
An efficient Poisson solver for complex embedded boundary domains using the multi-grid and fast multipole methods
Journal of Computational Physics (410: 109387) [DOI] [PDF, Pre-proof]
N. R. Rapaka & R. Samtaney (2018)
Non-normal stability of embedded boundary methods through pseudospectra
Journal of Computational Physics (373: 975-999) [DOI] [PDF]
N. R. Rapaka & S. Sarkar (2016)
An immersed boundary method for direct and large eddy simulation of stratified flows in complex geometry
Journal of Computational Physics (322: 511-534) [DOI]
M. B. de Stadler, N. R. Rapaka & S. Sarkar (2014)
Large eddy simulation of the near to intermediate wake of a heated sphere at Re=10,000
Int. J. Heat and Fluid Flow (49: 2-10) [PDF]
M. B. Jalali, N. R. Rapaka, & S. Sarkar (2014)
Tidal flow over topography: effect of excursion number on wave energetics and turbulence
Journal of Fluid Mechanics (750: 259-283) [PDF]
N. R. Rapaka, B. Gayen & S. Sarkar (2013)
Tidal conversion and turbulence at a model ridge: direct and large eddy simulations
Journal of Fluid Mechanics (715: 181-209) [PDF]
Thesis
Narsimha Reddy Rapaka (2015)
Simulation of stratified turbulent flows in complex geometry
Ph.D Thesis, University of California San Diego, La Jolla, CA, USA. [PDF] [LINK]
Narsimha Reddy Rapaka (2006)
Implementation of eddy-viscosity turbulence models in a general-purpose CFD solver
M.Tech Thesis, Indian Institute of Technology Kanpur, UP, India. [PDF]
Technical Reports
S. Rahul, N. R. Rapaka & V. Eswaran (2008)
DAE-IITK general purpose CFD solver - Tutorial and user manual
Indian Institute of Technology Kanpur, UP, India. [LINK] [PDF]
Conference Presentations
N. R. Rapaka & R. Samtaney (2021)
A novel adaptive spectral method for fluid flow simulations in non-periodic domains
74th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Phoenix, AZ.
N. R. Rapaka & R. Samtaney (2017)
A pseudospectra-based approach to non-normal stability of embedded boundary methods
70th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Denver, CO.
N. R. Rapaka, M. Al Marouf, & R. Samtaney (2016)
Efficient ghost cell reconstruction for embedded boundary methods
69th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Portland, OR.
M. Al Marouf, N. R. Rapaka & R. Samtaney (2016)
An embedded-boundary AMR method for compressible flow in moving complex geometry
28th International Conference on Parallel Computational Fluid Dynamics, Kobe, Japan.
N. R. Rapaka & S. Sarkar (2014)
An immersed boundary method for the simulation of turbulent stratified flows over rough topography
67th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, San Francisco, CA.
N. R. Rapaka & S. Sarkar (2013)
Large overturns at a model Luzon Strait topography: an application of the Immersed Boundary Method
66th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Pittsburgh, PA.
N. R. Rapaka, B. Gayen & S. Sarkar (2012)
Effect of slope criticality and tidal forcing on internal tide energetics at a model ridge
65th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, San Diego, CA.
N. R. Rapaka, B. Gayen & S. Sarkar (2012)
Direct and large eddy simulations of internal tides at a model ridge
6th Southern California Symposium on Flow Physics, Santa Barbara, CA.
N. R. Rapaka, B. Gayen & S. Sarkar (2011)
Numerical simulations of internal tides at a model ridge
64th Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Baltimore, MD.
N. R. Rapaka, B. Gayen & S. Sarkar (2011)
Tidal energy conversion at oceanic ridges
5th Southern California Symposium on Flow Physics, Los Angeles, CA.
N. R. Rapaka & S. Sarkar (2010)
Application of immersed boundary method to DNS of stratified flows
63rd Annual Meeting of the American Physical Society - Division of Fluid Dynamics, Long Beach, CA.
Posters
N. R. Rapaka & R. Samtaney (2017)
Non-normal stability of embedded boundary methods through pseudospectra
KAUST Research Conference - Predictive Complex Computational Fluid Dynamics, Thuwal, KSA, 22-24 May 2017.
N. R. Rapaka, B. Gayen & S. Sarkar (2011)
Tidal energy conversion at model oceanic ridges
30th Annual Research Expo - UCSD Jacobs School of Engineering, La Jolla, CA.