Orr was awarded a Fulbright Postdoctoral Fellowship to pursue a research project, titled: “Hydrodynamic instabilities in aerial firefighting” at Brown University. The project goal is to study the fluid mechanics principles governing the complex dynamics of fire-retarding liquids after their release from aircraft, seeking to improve the efficiency of aerial firefighting techniques.

Under the joint supervision of Dr. Yuval Dagan and Professor Eran Sher, Orr pursued his PhD in the Faculty of Aerospace Engineering at the Technion-Israel Institute of Technology. Orr’s research focused on modeling the dynamics of liquid-vapor phase change under extreme thermodynamic conditions, e.g., absolute negative pressures and near-critical temperatures. Alongside his Ph.D. research, Orr explored the nonlinear behavior of phase-changing droplets within vortical flows, which may serve as a simplified model for complex turbulent droplet-laden flows.

Orr's recent publications include:

Avni, O. & Dagan, Y. Droplet dynamics in Burgers vortices. I. Mass transport. Physical Review Fluids 8, 083604 (2023).

Avni, O. & Dagan, Y. Droplet dynamics in Burgers vortices. II. Heat transfer. Physical Review Fluids 8, 083605 (2023).

Avni, O., Dagan, Y., Bar-Kohany, T. & Sher, E. Bubble dynamics under negative pressures: A missing link? Thermal Science and Engineering Progress 46, 102162 (2023).

Orr was awarded a Fulbright Postdoctoral Fellowship to pursue a research project, titled: “Hydrodynamic instabilities in aerial firefighting” at Brown University. The project goal is to study the fluid mechanics principles governing the complex dynamics of fire-retarding liquids after their release from aircraft, seeking to improve the efficiency of aerial firefighting techniques.

Under the joint supervision of Dr. Yuval Dagan and Professor Eran Sher, Orr pursued his PhD in the Faculty of Aerospace Engineering at the Technion-Israel Institute of Technology. Orr’s research focused on modeling the dynamics of liquid-vapor phase change under extreme thermodynamic conditions, e.g., absolute negative pressures and near-critical temperatures. Alongside his Ph.D. research, Orr explored the nonlinear behavior of phase-changing droplets within vortical flows, which may serve as a simplified model for complex turbulent droplet-laden flows.

Orr's recent publications include:

Avni, O. & Dagan, Y. Droplet dynamics in Burgers vortices. I. Mass transport. Physical Review Fluids 8, 083604 (2023).

Avni, O. & Dagan, Y. Droplet dynamics in Burgers vortices. II. Heat transfer. Physical Review Fluids 8, 083605 (2023).

Avni, O., Dagan, Y., Bar-Kohany, T. & Sher, E. Bubble dynamics under negative pressures: A missing link? Thermal Science and Engineering Progress 46, 102162 (2023).

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Orr Avni
Fellow
2024