Sumedh Joshi bio photo

Sumedh Joshi

Applied Mathematician

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Curriculum Vita

Education

Cornell University, Ithaca, New York

  • Ph.D. Applied Mathematics, 2011-2016
  • M.S. Applied Mathematics, 2011-2014

The University of Texas, Austin, Texas

  • M.S. Mechanical Engineering (Acoustics), 2009-2011
  • B.S. Mathematics, 2005-2009
  • B.S. Mechanical Engineering, 2004-2008

Publications

  • A post-processing technique for stabilizing the discontinuous pressure projection operator in marginally- resolved incompressible inviscid flow, S. M. Joshi, P. J. Diamessis, D. T. Steinmoeller, M. Stastna, G. N. Thomsen, Computers and Fluids (currently in press, arXiv)

  • Deflation-augmented preconditioning of the Poisson-Neumann Schur problem using a high-order discontinuous discretization on long domains, S. M. Joshi, G. N. Thomsen, P.J. Diamessis, Journal of Computational Physics, vol. 313 pp. 209-232 (arXiv)

  • Geoacoustic inversions of horizontal and vertical line array acoustic data from a surface ship source of opportunity, S. A. Stotts, R. A. Koch, S. M. Joshi, V. T. Nguyen and D. P. Knobles, IEEE J. Ocean Engineering, vol. 35 No. 1 p. 79-102 (2010)

  • Maximum entropy principle applied to propagation uncertainty and sonar performance for a submarine towed array, D. P. Knobles, S. M. Joshi and R. A. Koch, U.S. Navy Journal of Underwater Acoustics, (2009)

  • Analysis of wind-driven ambient noise in a shallow water environment with a sandy seabed, D. P. Knobles, S. M. Joshi, R. D. Gaul, H. C. Graber and N. J. Williams, J. Acoustical Society of America, vol. 124 No. 3 EL p.p. 157-162 (2008)

Conference Papers

  • High-order 3D numerical modeling of incompressible stratified flows in deformed domains using a mixed spectral element/Fourier discretization, S. M. Joshi, P. J. Diamessis, and G. N. Thomsen, 8th International Symposium on Stratified Flows, San Diego, CA, August 2016

  • A deflated Schur complement method for the iterative solution of a high-order discontinuous element discretization of the Poisson equation, S. M. Joshi and P. J. Diamessis, 14th Copper Mountain Conference on Iterative Methods, Copper Mountain CO,arxiv

  • Applicability of two-dimensional boundary scattering models as a proxy for three-dimensional models, B. Tran, S. M. Joshi, M. J. Isakson, Proceedings of Meetings on Acoustics 19 (1), 070079, 2013

  • Backscattering from a pressure-release rough surface, S. M. Joshi and M. J. Isakson, Underwater Acoustics Measurements Conference, Kos, Greece, June 2011

Talks

2015

  • A spectral multidomain penalty method model for the simulation of internal solitary wave shoaling and breaking over gentle slopes, P. J. Diamessis, S. M. Joshi, G. N. Thomsen, G. Rivera, 2015 American Geophysics Union Ocean Sciences Meeting, San Francisco, CA, December 2015

  • Enforcing the divergence-free condition in an under-resolved SMPM incompressible Euler simulation, S. M. Joshi, P. J. Diamessis, D. Steinmoeller, M. Stastna, G. N. Thomsen, Environmental Fluid Mechanics and Hydrology Seminar, Cornell University, October 2015

  • A quadrilateral spectral multidomain penalty method model for the simulation of environmental stratified flow processes, S. M. Joshi, G. N. Thomsen, and P. J. Diamessis. 2015 AMMCS-CAIMS Congress, Waterloo, Ontario, June 2015

  • A parallel deformed spectral multi-domain penalty method code for the incompressible Navier-Stokes equations in long domains†, S. M. Joshi, P. J. Diamessis, and G. N. Thomsen. Environmental Fluid Mechanics and Hydrology Seminar, Cornell University, February 26th, 2015

2014

  • Modeling of sound propagation through an incompressible flow†, S. M. Joshi. Acoustics Seminar, The University of Texas at Austin, October 1st 2014

  • Computational modeling of sound propagation through an incompressible flow†, S. M. Joshi. Cornell Fluid Dynamics Seminar given to the Sibley School of Mechanical and Aerospace Engineering, September 23rd 2014

  • A deformed quadrilateral high-order method for the incompressible Navier-Stokes equations for stratified environmental flows., S. M. Joshi, P. J. Diamessis, G. N. Thomsen. International Conference on Spectral and High-Order Methods, Salt Lake City, UT, June 2014

  • Coupling between sound and hydrodynamics.†, S. M. Joshi, Environmental Fluid Mechanics and Hydrology Seminar, Cornell University, March 2014

2013

  • Modeling sound propagation through internal waves using a spectral element method., S. M. Joshi, M. S. Ballard, P. J. Diamessis, Meeting of the Acoustical Society of America, San Francisco, December 2013

  • A deformed spectral quadrilateral multi-domain penalty model for the incompressible Navier-Stokes equations., S. M. Joshi, P.J. Diamessis, NYCAM 2013, Ithaca, New York, November 2013

  • A deformed spectral quadrilateral multi-domain penalty model for the incompressible Navier-Stokes equations., S. M. Joshi, P. J. Diamessis, SIAM Conference on Computational Science and Engineering, Boston MA, February 2013

2012

  • A deformed spectral quadrilateral multi-domain penalty model for the incompressible Navier-Stokes equations., S. M. Joshi, P. J. Diamessis, 65th Meeting of the Division of Fluid Dynamics of the American Physical Society, San Diego CA, November 2012

  • Functional analysis in computational acoustics†, S. M. Joshi, A workshop presented to the Graduate Program in Acoustics, Pennsylvania State University, State College PA, March 2012

  • Modeling in underwater acoustics†, S. M. Joshi, Brigham Young University, Provo UT, February 23rd 2012

2011

  • Energy conservation in the Kirchhoff approximation, S. M. Joshi and M. J. Isakson, 162nd Meeting of the Acoustical Society of America, San Diego CA, November 2011

  • Backscattering from a pressure-release rough surface, S. M. Joshi and M. J. Isakson, 161st Meeting of the Acoustical Society of America, May 26th, 2011 in Seattle WA, J. Acoust. Soc. Am. 129, 2630 (2011)

  • Modeling rough surface scattering using numerical methods†, S. M. Joshi, Seminar given to the Grad- uate Program in Acoustics, The University of Texas at Austin, Austin, Texas, April 2011

2010

  • Three-dimensional scattering from the ocean surface using finite elements, S. M. Joshi and M. J. Isak- son , 160th Meeting of the Acoustical Society of America, November 16th, 2010 in Cancun, Mexico, J. Acoust. Soc. Am. 128, 2326 (2010)

  • Three-dimensional scattering from pressure-release rough surfaces, S. M. Joshi and M. J. Isakson, 159th Meeting of the Acoustical Society of America, April 22nd, 2010 in Baltimore, MD, J. Acoust. Soc. Am. 127, 1963 (2010)

2009

  • Three-dimensional rough surface scattering using finite elements, S. M. Joshi and M. J. Isakson, 158th Meeting of the Acoustical Society of America, October 29th, 2009 in San Antonio, TX, J. Acoust. Soc. Am. 126, 2166 (2009)

Awards

  • National Defense Science and Engineering Graduate Fellowship, High Performance Computing Modernization Office, 2012-2015
  • Charles C. & Lula May Wilson Endowed Fellowship, 2008
  • Virginia & Ernest Cockrell, Jr. Scholarship in Engineering, 2004–2005

Graduate Coursework

Mathematics

Computational Science

  • Matrix Computations (David Bindel Course Notes)
  • Numerical Analysis II (No Text)
  • Spectral Methods for Environmental Incompressible Flows (No Text)

Engineering

  • Turbulence and Turbulent Mixing (No Text)
  • Fluid Mechanics I (Panton)
  • Physical Acoustics I/II (Blackstock)
  • Nonlinear Acoustics (Hamilton)
  • Architectural Acoustics (Long)
  • Wave Phenomena (Williams)
  • Wave Phyiscs (Graff)

In parenthesis is the text used.