210 citations · 733 across the 34 of their papers we have counts for
35 papers
Thermometry in Near-Degenerate Nitrogen-Vacancy Ensembles Enabled by Bright-Dark-State Mixing
Matt K. Fu, John O. Dabiri
Nitrogen-vacancy (NV) centers have emerged as a highly sensitive platform for spatially resolved temperature measurements. When the and $\lvert0\…
Buoyancy-dependent induced flow by vertically migrating swimmers
Nina Mohebbi, John O. Dabiri
Collective vertical swimming may generate aggregate-scale flows that contribute to mixing and transport in stratified environments. The strength of these flows depends not only on…
Visual anemometry of natural vegetation from their leaf motion
Roni H. Goldshmid, John O. Dabiri, John E. Sader
High-resolution, near-ground wind-speed data are critical for improving the accuracy of weather predictions and climate models, supporting wildfire control efforts,…
A model for Reynolds-dependent linear instability in wall-bounded shear flows
John O. Dabiri, Anthony Leonard
Recent work demonstrated that alternative models to the "no-slip" boundary condition for incipient flow perturbations can produce linear instabilities that do not arise in the clas…
AquaMILR+: Design of an untethered limbless robot for complex aquatic terrain navigation
Matthew Fernandez, Tianyu Wang, Galen Tunnicliffe +4
This paper presents AquaMILR+, an untethered limbless robot designed for agile navigation in complex aquatic environments. The robot features a bilateral actuation mechanism that m…
Surfing vortex rings for energy-efficient propulsion
Peter Gunnarson, John O. Dabiri
Leveraging background fluid flows for propulsion has the potential to enhance the range and speed of autonomous aerial and underwater vehicles. In this work, we demonstrate experim…
Wake dynamics of wind turbines in unsteady streamwise flow conditions
Nathaniel J. Wei, Adnan El Makdah, JiaCheng Hu +3
The unsteady flow physics of wind-turbine wakes under dynamic forcing conditions are critical to the modeling and control of wind farms for optimal power density. Unsteady forcing…
Fish-inspired tracking of underwater turbulent plumes
Peter Gunnarson, John O. Dabiri
Autonomous ocean-exploring vehicles have begun to take advantage of onboard sensor measurements of water properties such as salinity and temperature to locate oceanic features in r…
Measurements and modelling of induced flow in collective vertical migration
Nina Mohebbi, Joonha Hwang, Matthew K. Fu +1
Hydrodynamic interactions between swimming or flying organisms can lead to complex flows on the scale of the group. These emergent fluid dynamics are often more complex than a line…
Do swimming animals mix the ocean?
John O. Dabiri
The world's oceans are in constant motion, transporting the sun's heat from the equator to the poles, bringing marine life fresh supplies of oxygen and nutrients, and sequestering…
Linear instability of viscous parallel shear flows: revisiting the perturbation no-slip condition
John O. Dabiri, Anthony Leonard
Linear stability analysis currently fails to predict turbulence transition in canonical viscous flows. We show that two alternative models of the boundary condition for incipient p…
Visual anemometry: physics-informed inference of wind for renewable energy, urban sustainability, and environmental science
John O. Dabiri, Michael F. Howland, Matthew K. Fu +1
Accurate measurements of atmospheric flows at meter-scale resolution are essential for a broad range of sustainability applications, including optimal design of wind and solar farm…
Persistent Laminar Flow at Reynolds Numbers Exceeding 100,000
John O. Dabiri, Nina Mohebbi, Matthew K. Fu
Accurate prediction of the transition from laminar flow to turbulence remains an unresolved challenge despite its importance for understanding a variety of environmental, biologica…
Power-generation enhancements and upstream flow properties of turbines in unsteady inflow conditions
Nathaniel J. Wei, John O. Dabiri
Energy-harvesting systems in complex flow environments, such as floating offshore wind turbines, tidal turbines, and ground-fixed turbines in axial gusts, encounter unsteady stream…
Physical constraints on visual anemometry using vegetation displacement statistics
Roni H. Goldshmid, John O. Dabiri
Visual anemometry (VA) leverages observations of fluid-structure interactions to infer incident flow characteristics. Recent work has demonstrated the concept of VA using both data…
Magnetic signature of vertically migrating aggregations in the ocean
Matt K. Fu, John O. Dabiri
The transport of heat and solutes by vertically migrating aggregations of plankton has long been explored as a potentially important source of ocean mixing. However, direct evidenc…
SerialTrack: ScalE and Rotation Invariant Augmented Lagrangian Particle Tracking
Jin Yang, Yue Yin, Alexander K. Landauer +7
We present a new particle tracking algorithm to accurately resolve large deformation and rotational motion fields, which takes advantage of both local and global particle tracking…
Collective wind farm operation based on a predictive model increases utility-scale energy production
Michael F. Howland, Jesus Bas Quesada, Juan Jose Pena Martinez +5
Wind turbines located in wind farms are operated to maximize only their own power production. Individual operation results in wake losses that reduce farm energy. In this study, we…
Self-Supervised Keypoint Discovery in Behavioral Videos
Jennifer J. Sun, Serim Ryou, Roni Goldshmid +6
We propose a method for learning the posture and structure of agents from unlabelled behavioral videos. Starting from the observation that behaving agents are generally the main so…
Phase-Averaged Dynamics of a Periodically Surging Wind Turbine
Nathaniel J. Wei, John O. Dabiri
The unsteady power generation of a wind turbine translating in the streamwise direction is relevant to floating offshore wind turbines, kite-mounted airborne wind turbines, and oth…
Wind speed inference from environmental flow-structure interactions, part 2: leveraging unsteady kinematics
Jennifer L. Cardona, John O. Dabiri
This work explores the relationship between wind speed and time-dependent structural motion response as a means of leveraging the rich information visible in flow-structure interac…
Learning Efficient Navigation in Vortical Flow Fields
Peter Gunnarson, Ioannis Mandralis, Guido Novati +2
Efficient point-to-point navigation in the presence of a background flow field is important for robotic applications such as ocean surveying. In such applications, robots may only…
A single-camera, 3D scanning velocimetry system for quantifying active particle aggregations
Matt K. Fu, Isabel A. Houghton, John O. Dabiri
A three-dimensional (3D) scanning velocimetry system is developed to quantify the 3D configurations of particles and their surrounding volumetric, three-component velocity fields.…
Wind speed inference from environmental flow-structure interactions
Jennifer L. Cardona, Katherine L. Bouman, John O. Dabiri
This study aims to leverage the relationship between fluid dynamic loading and resulting structural deformation to infer the incident flow speed from measurements of time-dependent…