Elasto-capillary fluid-structure interaction
We develop a high-fidelity fluid-structure interaction model that can handle systems involving a nonlinear solid and many immiscible fluids. We use our model to discover new fundamental mechanisms involving elasto-capillary wetting, such as transport of droplets on elastic solids. This work advances the fields of computational fluid dynamics and computational physics, and also improves technologies in microfluidics, lab-on-chip devices, and self-cleaning surfaces. I am supervised by Prof. Hector Gomez from the School of Mechanical Engineering at Purdue University.
We develop a high-fidelity fluid-structure interaction model that can handle systems involving a nonlinear solid and many immiscible fluids. We use our model to discover new fundamental mechanisms involving elasto-capillary wetting, such as transport of droplets on elastic solids. This work advances the fields of computational fluid dynamics and computational physics, and also improves technologies in microfluidics, lab-on-chip devices, and self-cleaning surfaces. I am supervised by Prof. Hector Gomez from the School of Mechanical Engineering at Purdue University.
Turbulent reacting flows
We study droplet-laden turbulent reacting flows with point droplet direct numerical simulations and a one-step global chemical reaction mechanism. Using Nek5000, we analyze the effects of mass loading and mean Stokes number on droplet clustering, evaporation, and combustion behavior. This work provides valuable insights and data that can help improve the design and optimization of droplet-laden turbulent reacting systems used in combustion engines and gas turbines. I was supervised by Philipp Weiss and Prof. Dr. Patrick Jenny from the Institute of Fluid Dynamics at ETH Zurich.
We study droplet-laden turbulent reacting flows with point droplet direct numerical simulations and a one-step global chemical reaction mechanism. Using Nek5000, we analyze the effects of mass loading and mean Stokes number on droplet clustering, evaporation, and combustion behavior. This work provides valuable insights and data that can help improve the design and optimization of droplet-laden turbulent reacting systems used in combustion engines and gas turbines. I was supervised by Philipp Weiss and Prof. Dr. Patrick Jenny from the Institute of Fluid Dynamics at ETH Zurich.
Conjugate heat transfer
We develop a conjugate heat transfer lattice Boltzmann model to simulate moving boundaries with variable Prandtl numbers and variable thermal capacitances of solid or fluid. We validate our model and code by performing simulations involving curved and moving boundaries. This work is useful for simulating dispersed two-phase flows with high Biot numbers, where a lumped system assumption is not valid. I was supervised by Dr. Fabian Bosch and Prof. Dr. Ilya Karlin from ETH Zurich.
We develop a conjugate heat transfer lattice Boltzmann model to simulate moving boundaries with variable Prandtl numbers and variable thermal capacitances of solid or fluid. We validate our model and code by performing simulations involving curved and moving boundaries. This work is useful for simulating dispersed two-phase flows with high Biot numbers, where a lumped system assumption is not valid. I was supervised by Dr. Fabian Bosch and Prof. Dr. Ilya Karlin from ETH Zurich.
Rarefied gas flows
We develop a new lattice Boltzmann model [paper] to simulate rarefied gas flows in the slip and transition regimes. We validate our model with the results from the literature. This work is useful for designing microfluidic devices that operate at large Knudsen numbers, especially where the continuum hypothesis breaks down. I was supervised by Prof. Arumuga Perumal from the Department of Mechanical Engineering at National Institute of Technology Karnataka, Surathkal.
We develop a new lattice Boltzmann model [paper] to simulate rarefied gas flows in the slip and transition regimes. We validate our model with the results from the literature. This work is useful for designing microfluidic devices that operate at large Knudsen numbers, especially where the continuum hypothesis breaks down. I was supervised by Prof. Arumuga Perumal from the Department of Mechanical Engineering at National Institute of Technology Karnataka, Surathkal.
Fluid dynamics in bounded enclosures
We study the vortex dynamics and flow features in bounded enclosures, such as lid-driven cavities of different shapes. We analyze the effects of Reynolds number, aspect ratio, and oscillating speed on the fluid dynamics in the cavity. I was supervised by Prof. Ajay Kumar Yadav and Prof. Arumuga Perumal from the Department of Mechanical Engineering at National Institute of Technology Karnataka, Surathkal.
We study the vortex dynamics and flow features in bounded enclosures, such as lid-driven cavities of different shapes. We analyze the effects of Reynolds number, aspect ratio, and oscillating speed on the fluid dynamics in the cavity. I was supervised by Prof. Ajay Kumar Yadav and Prof. Arumuga Perumal from the Department of Mechanical Engineering at National Institute of Technology Karnataka, Surathkal.
Isosurfaces of Q-criterion (0.01) colored by the velocity magnitude in three-dimensional oscillating lid-driven cavity flows.
Selected course projects
Phase-field modeling of two-component immiscible flows [Report]
Implemented a fourth-order Navier-Stokes-Cahn-Hilliard model to simulate a mixture of two immiscible fluids with different densities and viscosities, and performed simulations of rising bubbles due to buoyancy effects. |
Simulation of thermal flows using lattice Boltzmann method [slides][Report]
Implemented a consistent two-population thermal lattice Boltzmann model to simulate thermal flows in some benchmark problems: Rayleigh-Benard convection, natural convection and conjugate-mixed convection in bounded enclosures. |