Managing complex programs and delivering results

Finalist for UK Alumni Awards for the Science and Sustainability Category 2023

ASME Robert T. Knapp Award as lead author

Cooling strategies of fusion reactors

Featured on AAAS Eureka alert for research on cooling strategies of fusion reactors. Part of the  team at ORNL testing the approach in a helium flow loop system built to determine which geometries are the most effective in helping the gas flow in continuous movement, cooling the metal structures. The effort brings together ORNL's fusion technology expertise with the lab's advanced manufacturing capabilities.

Digital-Twin for Fusion - Helium Loop

Ansys simulation world 2021 talk on digital twin of ORNL helium loop using reduced order models

Shear flow experiments for the development of Containerless Bioreactor

Research for development of contianerless bioreactor with NASA for International Space Station and long-term missions to Mars

Droplet pinning in Zero-G

The first successful controlled pinning of droplet in zero-G along with two NASA engineers

Knife-edge experiments with monolayer

Circular systems are advantageous for interfacial studies since they do not suffer from end effects, but their hydrodynamics is more complicated because their flows are not unidirectional. Here, we analyze the shear rheology of a harmonically driven knife-edge viscometer through experiments and computations based on the Navier-Stokes equations with a Newtonian interface. The measured distribution of phase lag in the surface velocity relative to the knife-edge speed is found to have a good signal-to-noise ratio and provides robust comparisons to the computations. For monomolecular films of stearic acid, the surface shear viscosity deduced from the model was found to be the same whether the film is driven steady or oscillatory, for an order of magnitude range in driving frequencies and amplitudes. Results show that increasing either the amplitude or forcing frequency steepens the phase lag next to the knife edge. In all cases, the phase lag is linearly proportional to the radial distance from the knife edge and scales with surface shear viscosity to the power.

Phys. Rev. Fluids 2, 044002 (2017) - Oscillatory shear rheology measurements and Newtonian modeling of insoluble monolayers (aps.org)

Protein Shearing experiments

Understanding the effects of shearing on proteins - Ground experiments for proof-of-concept for experiments on Interntaional Space Station

Automated Active Flow Control System based on Fluidic Oscillators

An automated system which can automatically control flow on the surface of an aerofoil section, such as an aircraft wing, at varied free stream flow velocities and at varied angles of attack

New fluidic-oscillator concept for flow-separation control