Publications

 

  1.   A. Chatterjee, M. K. Verma, A. Kumar, R. Samtaney, Scaling of a Fast Fourier Transform and a Pseudo-spectral Fluid Solver up to 196608 cores, Computers & Fluids, 2016, under review.
  2.  W. Cheng, D. I. Pullin, R. Samtaney, W. Zhang, W. Gao, Large eddy simulation of flow over cylinder with ReD from 3.9x103 to 8.5x105:   a skin friction perspective, Journal of Fluid Mechanics, 2016, under review.
  3.  D. Bond, V. Wheatley, R. Samtaney, D. I. Pullin, The two-fluid plasma Richtmyer- Meshkov instability, Journal of Fluid Mechanics, 2016, under review.
  4. A. Baksh, R. Samtaney, Linear Analysis of Converging Richtmyer-Meshkov Instability in the Presence of an Azimuthal Magnetic Field, ASME J. Fluids Engineering, 2016, under review. 
  5. M. Al Marouf, R. Samtaney, A Versatile Embedded Boundary Adaptive Mesh Method for Compressible Flow in Complex Geometry, Journal of Computational Physics, 2016, under review.
  6. W. Zhang, R. Samtaney, Stabilization of flow past a cylinder with rounded corners, Physics of Fluids, 2016, under review.
  7. W. Mostert, D. I. Pullin, R. Samtaney ,V. Wheatley, Magnetohydrodynamic implosion symmetry and suppression of Richtmyer-Meshkov instability in an octahedrally symmetric field, Physical Review Fluids, 2017, to appear.
  8. W. Mostert, D. I. Pullin, R. Samtaney ,V. Wheatley, Geometrical shock dynamics for magnetohydrodynamic fast shocks, Journal of Fluid Mechanics, 811, article no. R2, 2017.
  9. V. Ratushna, R. Samtaney, Transient growth of a Vlasov plasma in a weakly inhomogeneous magnetic field. Physics of Plasmas, 23(12): 122116, 2016.
  10. M. S. Mohamed, A. N. Hirani, R Samtaney, Comparison of discrete Hodge star operators  for surfaces, Computer Aided Design, 78:118-125, 2016
  11. W. Zhang, R. Samtaney, Low-Re flow past an isolated cylinder with rounded corners, Computers & Fluid, 136:384-401, 2016
  12. A. Baksh, S. Gao, R. Samtaney, V. Wheatley, Linear Simulations of the Cylindrical Richtmyer-Meshkov Instability in Magnetohydrodynamics. Physics of Fluids, 28, 034106, 2016
  13. D. I. Pullin, W. Mostert, R. Samtaney ,V. Wheatley, Converging cylindrical magnetohydrodynamic shock onto a power-law-varying line current, Journal of Fluid Mechanics, 793:414-443, 2016
  14. W. Zhang, R. Samtaney, Numerical simulation and global linear stability analysis on low-Re flow past a heated circular cylinder, Intl.J. of Heat and Mass Transfer, 98:584-595, 2016.
  15. W. Zhang, R. Samtaney, BiGlobal linear stability analysis of low-Re flow past an airfoil at high angle of attack, Physics of Fluids, 28(4): 044105, 2016.
  16. M. Adams, J. Brown, M. Knepley, R. Samtaney, Segmental Refinement: A Multigrid Technique for Data Locality, arXiv preprint arXiv:1406.7808, SIAM J. Scientific Computing, 38(4):C426-C440, 2016
  17. M. S. Mohamed, A. N. Hirani, R Samtaney, Discrete exterior calculus discretization of Incompressible Navier-Stokes equations on simplicial meshes, J. Comp. Physics, 2016, (arXiv preprint arXiv:1508.01166)
  18. W. Zhang, R. Samtaney, Assessment of spanwise domain size effects on the transitional flow past an airfoil, Computers and Fluids, 124:39-53, 2016.
  19. W. Cheng, D. I. Pullin, R. Samtaney, Large-eddy simulation of separation and reattachment of a flat plate turbulent boundary layer, Journal of Fluid Mechanics, 785, 78-108, 2015
  20. W. Mostert, V. Wheatley, D. I. Pullin, R. Samtaney, Effects of magnetic fields on magnetohydrodynamic cylindrical and spherical Richtmyer-Meshkov instability Physics of Fluids, 27, 104102, 2015.
  21. R. Kumar, M. K. Verma, R. Samtaney, Energy transfers in dynamo with small magnetic Prandtl numbers. Journal of Turbulence,16 (11), 1114-1134, 2015
  22. W. Zhang, R. Samtaney, A direct numerical simulation investigation of the synthetic jet frequency effects on separation control of low-Re flow past an airfoil. Physics of Fluids, 27(5): 055101, 2015 
  23. W. Zhang, R. Samtaney, A. Qamar, W. Cheng, W. Gao, Geometrical effects on the airfoil flow separation and transition. Computer and Fluids, 116, pp:60-73, 2015
  24. A. Qamar, R. Samtaney, A Model for acoustically driven micro-bubble inside a rigid tube. ASME Journal of Fluids Engineering, 137(2):021301-021301-9, 2015.
  25. A. Qamar, R. Samtaney, J. L.  Bull, Mass transport over an oscillating cylinder in a pulsatile flow regime. Submitted to ASME Journal of Biomechanical Engineering, 2014.
  26. V. Ratushna, R. Samtaney, Transient growth in a magnetized Vlasov plasma. European Physics Letters, 108 (5), 55001, 2014.  
  27. W. Mostert, V. Wheatley, D. I. Pullin, R. Samtaney, Effect of seed magnetic fields on MHD implosion dynamics. Physics of Fluids, 26 (12), 126102, 2014
  28. D. I. Pullin, W. Mostert, V. Wheatley, R. Samtaney, Shock converging on a line current in ideal magnetohydrodynamics, Physics of Fluids, 26(9), 097103, 2014
  29. W. Cheng, R. Samtaney, Power-law versus log-law in wall-bounded turbulence: A large-eddy simulation perspective. Phys. Fluids, 26(1), art. no. 011703, 2014
  30. V. Wheatley, R. Samtaney, D. I.  Pullin, R. M. Gehre, The transverse field Richtmyer-Meshkov instability in magnetohydrodynamics. Phys. Fluids, 21(8) art. no. 082102, 2014
  31. R. Kumar, M. K. Verma, R. Samtaney, Energy transfers and magnetic energy growth in small-scale dynamo. vol. 104(5), art. no. 54001, European Physics Letters, 2013
  32. W. Cheng, R. Samtaney, A high-resolution code for large eddy simulation of incompressible turbulent boundary layer flows. Computers & Fluids, 92:82-92, 2013
  33. M. K. Verma, A. Chaterjee, S. Reddy, R. K. Yadav, S. Paul, M. Chandra, R. Samtaney, Benchmarking and scaling studies of a pseudospectral code Tarang for turbulence simulations. Pramana Journal of Physics, 81(4):617-629, 2013
  34. A. Qamar, R. Samtaney, J. L.  Bull, Dynamics of micro-bubble sonication inside a phantom vessel. Applied Physics Letters, 102(1), art. no. 013702, 2013
  35. A. Qamar, R. Samtaney, J. L.  Bull, Pulsatility role in cylinder flow dynamics at low Reynolds number. Physics of Fluids, 24(8), art. no. 081701, 2012
  36. R. Samtaney, Numerical Aspects of Drift Kinetic Turbulence: Ill-posedness, Regularization and a priori Estimates of SGS Terms. Computational Science and Discovery, 5(1), art. no. 014004, 2012
  37. D. R. Reynolds, R. Samtaney and H. C. Tiedeman, A fully implicit Newton-Krylov-Schwarz method for tokamak magnetohydrodynamics: Jacobian construction and preconditioner formulation, 5(1), art. no. 014003, Computational Science and Discovery, 2012
  38. N. F. Loureiro, R. Samtaney , A. A. Schekochihin, D. Uzdensky, Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas. Physics of Plasmas, 19 (4), art. no. 042303, 2012.
  39. M. F. Adams, R. Samtaney, and A. Brandt, Toward textbook multigrid efficiency for fully implicit resistive magnetohydrodynamics. J. Comput. Physics, vol 229(18):6208-6219, 2010
  40. D. R. Reynolds, R. Samtaney and C. S. Woodward, Operator-based preconditioning of stiff hyperbolic systems. SIAM J. of Sci. Comput., 32 (1):150-170, 2010 
  41. V. Wheatley, R. Samtaney and D. I. Pullin, The Richtmyer-Meshkov instability in magnetohydrodynamics. Phys. Fluids, 21(8), art. no. 082102, 2009
  42. R. Samtaney, N. F. Loureiro, A. A. Schekochihin, D. Uzdensky, and S. C. Cowley, Formation of plasmoid chains in magnetic reconnection, Phys. Rev. Lett., 103 (10), art. no. 105004, 2009
  43. R. Samtaney, A method to compute linear stability of impulsively accelerated density interfaces in ideal-MHD and gas dynamics, J. Comput. Physics, 228(18):6773-6783, 2009
  44. C-S. Chang, S. Klasky, J. Cummings, R. Samtaney, A. Shoshani, L. Sugiyama, D. Keyes, S. Ku, G. Park, S. Parker, N. Podhorszki, H. Strauss, H. Abbasi, M. Adams, R. Barreta, G. Bateman, K. Bennett, Y. Chen, E. D'Azevedo, C. Docan, S. Ethier, E. Feibush, L. Greengard, T. Hahm, F. Hinton, C. Jin, A. Khan, A. Kritz, P. Krsti, T. Lao, W. Lee, Z. Lin, J. Lofstead, P. Mouallem, M, Nagappan, A. Pankin, M. Parashar, M. Pindzola, C. Reinhold, D. Schultz, K. Schwan, D. Silver, A. Sim, D. Stotler, M. Vouk, M. Wolf, H. Weitzner, P. Worley, Y. Xiao, E. Yoon, and D. Zorin, Toward a first-principles integrated simulation of tokamak edge plasmas. Journal of Physics: Conference Series, 125, art. no. 012042, 2008
  45. G. Park, J. Cummings, C-S. Chang, N. Podhorszki, S. Klasky, S. Ku, A. Pankin, R. Samtaney, A. Shoshani, P. Snyder, H. Strauss, L. Sugiyama and the CPES Team, Coupled simulation of kinetic pedestal growth and MHD ELM crash. Journal of Physics: Conference Series, 78(1), art. no. 012087, 2007
  46. R Samtaney, B. van Straalen, P. Colella and S. C. Jardin, Adaptive mesh simulations of multi-physics processes during pellet injection in tokamaks. Journal of Physics: Conference Series, 78(1): art. no.  012062, 2007
  47. D. R. Reynolds, R. Samtaney and C. S. Woodward, A fully implicit numerical method for single-fluid resistive magnetohydrodynamics. J. Comput. Phys., 219(1):144-162, 2006
  48. P. E. Dimotakis and R. Samtaney, Planar shock cylindrical focusing by a perfect gas lens. Phys. Fluids,  18(3), art. no. 031705 2006
  49. R. Samtaney, P. Colella. T. J. Ligocki, D. F. Martin and S. C. Jardin. An adaptive mesh semi-implicit unsplit conservative method for resistive MHD. Journal of Physics:Conference Series, 16(1):40-48, 2005
  50. D. Tam, R. Radovitzky, and R. Samtaney, An algorithm for the modeling the interaction of a flexible rod with a two-dimensional high speed flow. Intl. J. Num. Meth. In Engineering, 64(8):1057-1077, 2005
  51. V. Wheatley, D. I. Pullin, and R. Samtaney, Stability of an impulsively accelerated density interface in magnetohydrodynamics. Physical Review Letters, 95(12), art. no. 125002, 2005
  52. V. Wheatley, D. I. Pullin and R. Samtaney, Regular shock refraction at an oblique planar density interface in magnetohydrodynamics. Journal of Fluid Mechanics, 522:179-214, 2005
  53. R. Samtaney, S. C. Jardin, P. Colella, D. F. Martin.  3D Adaptive mesh refinement simulations of pellet injection in tokamaks.  Computers Physics Communications, 164(1-3):220-228, 2004
  54. R. Samtaney. Suppression of the Richtmyer-Meshkov instability in the presence of a magnetic field. Phys. Fluids, Vol. 15, L53-L56. 2003
  55. D. Petrasek, R. Samtaney, and D. S. Cohen. Glandular regulation of interstitial diffusion: a model and simulation of a novel physiological mechanism. Am. J. Physiol. Endocrinol. Metab. 283(2):E195-E206, 2002
  56. J. Cummings, M. Aivazis, R. Samtaney, R. Radovitzky, D. Meiron. A virtual test facility for the simulation of dynamic response in materials. J. Supercomputing, 23 (1): 39-50, 2002
  57. B. Kosovic, D. I. Pullin and R. Samtaney. Subgrid-scale modeling for large-eddy simulation of compressible turbulence. Phys. Fluids, 14(4):1511-1522, 2002
  58. R. Samtaney, D. I. Pullin and B. Kosovic. Direct numerical simulation of decaying isotropic compressible turbulence and shocklet statistics. Phys. Fluids, 13(5):1415-1430, 2001
  59. J. Ray, R. Samtaney, and N. J. Zabusky. Shock interactions with heavy gaseous elliptic cylinders: Two leeward-side shock competition modes and a heuristic model for interfacial circulation deposition at early times. Phys. Fluids, 12(3): 707-716, 2000
  60. R. Samtaney and D. I. Pullin. Self-similar hypervelocity shock interactions with oblique contact discontinuities. Shock-Waves, 8(5):299-310, 1998
  61. R. Samtaney, J. Ray and N. J. Zabusky. Baroclinic circulation generation on shock accelerated slow-fast gas interfaces. Phys. Fluids. 10(5):1217-1230, 1998
  62. R. Samtaney and D. I. Meiron. Hypervelocity Richtmyer-Meshkov instability. Phys. Fluids, Vol 9(6):1783-1803, 1997
  63. R. Samtaney. Computational methods for self--similar solutions of the compressible Euler equations. Journal of Comput. Phys., 132(2):327-345, 1997
  64. R. Samtaney and D.I. Pullin. On initial-value and self-similar solutions of the compressible Euler equations. Phys. Fluids, 8(10):2650-2655, 1996
  65. M. Chandy, B. Massingill, D. I. Meiron, and R. Samtaney. Parallel programming archetypes and scientific computing. Parallel Computing Research Newsletter, CPRC, 3(4):10, 1995
  66. S. E. Parker, J. C. Cummings and R. Samtaney. Visualization of plasma turbulence. IEEE Computer Graphics and Applications, 15(2):7-10, 1995
  67. R. Samtaney, D. Silver, N. J. Zabusky, and J. Cao. Visualizing features and tracking their evolution. Computer, 27(7):20-27, 1994
  68. R. Samtaney and N. J. Zabusky. Circulation deposition on shock-accelerated planar and curved density-stratified interfaces: Models and scaling laws. J. Fluid Mech., 269:45-78, 1994
  69. R. Samtaney and N. J. Zabusky. On shock polar analysis and analytical expressions for vorticity deposition in shock-accelerated density-stratified interfaces. Phys. Fluids. A, 5(6):1285-1287, 1992
  70. N. J. Zabusky, D. Silver, R. Pelz et al. Visiometrics, juxtaposition and modeling. Phys-today vol. 46(3): 24-31, 1993
  71. X. Yang, I-L. Chern, N. J. Zabusky, R. Samtaney, & J.F. Hawley. Vorticity generation and evolution in shock accelerated density-stratified interfaces. Phys. Fluids A, 4(7):1531-1540, 1992
  72. R. P. Kirchner and R. Samtaney. On the calculation of solar azimuth angles. Intl. J. Mech. Eng.  Ed., 21(2):137-146, 1992 (This paper is not available online)
  73. R. P. Kirchner and R. Samtaney. Design, construction and testing of a thermoelectric calorimeter. AHSRAE Trans.,  96(1):3360, 1990