Rabia Sönmez

-Validating heat conduction solver for different geometries (e.g., shells, plates, discs), including industrial cases such as automotive brake systems. (e.g Volkswagen) - Automated large-scale simulation post-processing workflows using Python and Bash on Linux based HPC systems.

As a PhD candidate, my research focuses on vortex dynamics and targeting turbulence using polymer for drag reduction, in this regard; - I performed Direct Numerical Simulation using in-house Fortran code with Spectral Methods in 3D channel flow and generated vortex rings using an impulsive body force, differing from traditional methods that initialize vortex rings as an initial condition. - Created simple analytical models to calculate the strength of the vortex rings. - Performed CFD Simulation of vortex pair impacting to a polymer layer to investigate the effect of a polymer layer on a vortex pair, considering the polymer concentration, relaxation time, and maximum molecular length. - Additionally, as a teaching assistant, I assisted students with their coursework such as Solid Mechanics, Fluid Mechanics and Analytical Methods in Engineering.

As a Software Validation Engineer, I worked with the R&D Physics Validation team and implemented the Method of Manufactured Solutions (MMS) on PowerFlow to verify the accuracy of heat conduction solvers across various scenarios, including spatially varying conductivity, discontinuous material domains, and anisotropic materials. Also, developed Python scripts for post-processing analysis. These scripts analyzed heat conduction problems results to identify potential errors and provide feedback to developers.

- I Investigated shock wave capturing capability of Total Variation Diminishing Schemes within OpenFoam and analyzed the effect of numerical schemes such as Linear-Central Differencing, Upwind Differencing, QUICK and Linear Upwind Differencing on the shock tube problem using OpenFoam. -Prepared an educational report describing how to generate a sphere using BlockMesh utility of OpenFoam.

- Using Ansys CFX, I performed CFD simulations for aerodynamic performance of military-grade ammunition.

Thesis : Numerical Investigation of shock interactions in a supersonic retropropulsion flow. Advisor : Dr. Ahmet Selim Durna.

Advisors: Prof. Robert A. Handler Prof. David B. Goldstein Prof. Saikishan Suryanarayanan