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Shivaji Medida





Education
• B. Tech., (Aerospace Engineering)   Indian Institute of Technology Madras (2005)
• M. S.,     (Mechanical Engineering)  The University of Toledo                      (2007)
• Ph. D.,    (Aerospace Engineering)   University of Maryland College Park     (2014)

Previous Work - Development
• 3-D, MPI-parallel, unsteady Reynolds-averaged Navier-Stokes (RANS) solver with moving grids and overset-mesh capability
• 
Correlation-based laminar-turbulent transition model for improved drag prediction using Spalart-Allmaras turbulence model
• Strong adverse pressure gradient correction for RANS turbulence models to improve prediction of boundary layer separation
• New swept-wing crossflow transition model for RANS turbulence models
• Implementation of turbulence and transition models in a GPU-RANS flow solver in CUDA-C
• High-order accurate non-reflecting boundary conditions for turbomachinery flows

Previous Work - Applications
• 3-D RANS simulations to quantify effects of  boundary-layer transition in rotorcraft and wind turbine flows
   
Helicopter Rotors      : BO-105, UH-60A, S-76
   • Wind Turbine Rotors : NREL Phase VI, Sandia 100-m rotor
•  Comprehensive analysis (free-vortex wake + aeromechanics solver) to quantify effects of surface roughness and transition on rotor performance (BO-105, UH60-A)
Hybrid RANS-LES simulations of dynamic stall on a pitching airfoil section for rotorcraft applications
• Hybrid RANS-LES simulations of a pitching-plunging airfoil for MAV applications
• 3-D RANS simulations of flow through an annular diffuser and volute exhaust to evaluate accuracy of turbulence models (using FLUENT)
• 3-D RANS simulations of reacting and cold flow through a Scramjet engine to study effect of fuel droplet size and injection configuration (using FLUENT)
• 3-D RANS simulations of flow field beneath a launch pad and its jet deflector duct to assess launch pad heating (using FLUENT)
• 2-D simulations to investigate stability of partially premixed flames around a sudden expansion with varying equivalence ratios and ratio of the expansion duct to the orifice (using FLUENT)