Welcome to my website!

I am currently working as a Modeling Engineer for Trane Technologies at La Crosse, Wisconsin. Prior to this, I pursued my Ph.D. in the Multiphase Computational Fluid Dynamics group at University of Wisconsin-Madison. My research work broadly involved numerical simulations of multiphase flow simulations, involving heat transfer, phase change and chemical reactions. In addition, I have also worked on data analysis methods to analyze the data obtained from numerical simulations. A brief overview of my research is given below:

• Stability analysis tools for multi-phase flows: Development of tools to solve hydrodynamic instabilities in single-phase and two-phase fluid flows in Cartesian and Cylindrical coordinates using Spectral methods. These tools will aid in understanding liquid atomization in sprays, assisting in predicting the disturbances that would cause the breakup of liquid sheets and jets in spray applications.
• Understanding the primary modes responsible for high-speed liquid sheet breakup: Using stability analysis and high-fidelity Volume of Fluid (VoF) multiphase flow simulations in OpenFOAM, the physics of the large-wavelength modes causing the breakup of high-speed liquid jets is explained.
• Simulation of Urea Water Solution (UWS) sprays in engine exhaust: The UWS spray is simulated using Lagrangian Eulerian simulation. The simulation involves multicomponent evaporation of UWS droplets, thermolysis, and hydrolysis reactions involving the decomposition of urea into ammonia. The ammonia reacts with nitrogen oxides from the engine exhaust and reduces them to nitrogen and water which can be safely released into the atmosphere.
• Data-driven techniques to analyze the modes in jet atomization: Analysis of the spray characteristics in 3D cylindrical jets using two techniques; a machine learning technique called Dynamic Mode Decomposition (DMD) and Continuous Wavelet transforms (CWT).
• Improvements in curvature and surface tension predictions in OpenFOAM solver interFoam: Distance-based function implemented in the multiphase flow solver, to predict the surface tension force better and avoid the issue of spurious currents.

News

December 2024 Started working at Trane Technologies as a Modeling Engineer.

November 2024 Successfully defended my PhD thesis titled, “Insights into High-Speed Liquid Atomization and Simulation of Engine Exhaust to Reduce NOx”.

October 2024 Recent collaborative research was presented at the ASME-ICEF 2024 Conference, titled “Integrated Engine-Emissions-Aftertreatment System Model”.

June 2024: Published in the Science Talks journal on “Insights into primary liquid atomization”.

May 2024: Presented a paper on “Large-scale Instabilities Observed in the Breakup of High-speed 3D Cylindrical Jets Injected into Quiescent Gas” at ILASS-Americas 2024.