Professor Kamran Mohseni received his B.S. degree from the University of Science and Technology, Tehran, Iran, his M.S. degree in Aeronautics and Applied Mathematics from the Imperial College of Science, Technology and Medicine, London, U.K., and his Ph.D. degree from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 2000.
He was a Postdoctoral Fellow in Control and Dynamical Systems at Caltech for almost a year. In 2001, he joined the Department of Aerospace Engineering Sciences, University of Colorado at Boulder. In 2011, he joined the University of Florida, Gainesville, FL, USA as the W.P. Bushnell Endowed Chaired Professor in the Department of Electrical and Computer Engineering and the Department of Mechanical and Aerospace Engineering. He is the Director of the Institue for Networked Autonomous Systems.
Mike primarily studies unconventional underwater propulsion, inspired by squid and other cephalopods, for use on unmanned underwater vehicles. This research focuses on jet formation and vortex ring dynamics, as they relate to propulsive performance. His research is mostly experimental, but he also investigates unsteady propulsion and analytical optimization.
Digital fluid dynamics is defined as the creation and manipulation of discrete packets of fluid, such as droplets. When the physical length scales are at the micro-scale, the advantages of employing discrete droplets for applications become increasingly apparent, as surface tension forces dominate allowing for less energetic actuation methods. This experimental research is primarily concerned with understanding the flow inside micro-droplets and how it is affected by parameters such as droplet aspect ratio, Reynolds number, and contact angle.Low-aspect-ratio wing aerodynamics
This research focuses on investigating the unique aerodynamics and flow-structure interactions of low-aspect-ratio wings. These wings are able to affect reattached flow at high angles of attack, which allows for continued lift generation at these incidences. The downwash induced by the tip vortex flow is crucial in maintaining the reattached flow. Thus the unsteady interaction of the tip vortices with other flow structures, such as the leading-edge shear layer, is very important to the understanding of how to maintain stable flight.
My research focuses on singular interfacial flows and their effect on the transport of mass, momentum, and energy. Interfacial flows are often small in scale and characterized by rapid gradients. This leads to the formation of unique singular fluid flows (moving contact lines, interfacial cusps, etc.) that exhibit a wide range of fascinating dynamics that are fundamentally important to applications like industrial coating, multiphase heat transfer, ink-jet printing, lab-on-a-chip diagnostics, etc. In my research I seek to understand these multiphase irregularities using integrable singularities which conserve fundamental quantities like mass, momentum, and energy without resolving the microscopic phenomena. In this approach, continuum models are capable of capturing the multiscale dynamics of multiphase irregularities. My other research interests include multiphase vorticity dynamics and heat transfer.
For the past four decades, Computational Fluid Dynamics community has been developing a variety of methods to compute flows involving material interfaces (multiphase/multi-fluid flow), sharp flow variations (i.e. shocks), and turbulence. While the challenges in these categories of problems look different, they are all the result of limited resolution (Observability Limit) in calculations. By deriving governing equations with the assumption of limited resolution (Observable Set of Governing Equations), we are able to provide a unified framework for correctly computing the material interface, shock, and turbulence.
Interface are ubiquitous in nature. The most common boundary condition to define tangential momentum transfer across an interface is the no-slip boundary condition. Although this has been remarkably successful in reproducing the characteristics of many types of flow, it breaksdowns for problems usch as spreading of a droplet, corner flow and extrusion of ploymer melts. Since the breakdown occurs at molecular sclaes, my research focuses on using molecular dynamics simulations to study this breakdown and develop a universal boundary condition for velcoity at the interface. Recent research has dealt with the studying the effect of unsteady flow on slip at the wall in a single phase fluid using molecular dynamic simulations. The left figure shows molecular dynamic simulation of oscillatory Couette flow and the right figure shows the hysteresis observed when slip velocity is plotted against shear rate of fluid.
This study focuses on cooperative localization methods for autonomous vehicles when the GPS is not easily accessible and the vehicle dynamics is dominated by strong background flow fields. In non-uniform vector fields, path-independent, background vector field based global localization methods are developed to improve the dead-reckoning location estimation (Left). A cooperative localization hierarchy can further improve the overall localization performance in a vehicle swarm through range and frequency limited intra-vehicle measurements and communication (Right).
Recent investigations into the flight mechanics of Micro Aerial Vehicles (MAVs) have shown new stability modes that must be incorporated in Low Aspect Ratio (LAR) vehicle design.Using a regime of wind tunnel testing, flow visualization and flight validation I am working to develop an understanding the flight mechanics of MAVs. The understanding of the vehicle class will allow designs to be generated for use in varying applications without the mission specific empirical data currently required in MAV design. I hope this work will ultimately lead to MAVs used to collect data in severe weather systems such as hurricanes.
My research focuses on the design and implementation of low-resource autopilots for UAVs, with an emphasis on novel control schemes and collaborative control.
My research draws connections between the fluid dynamics and stability of low-aspect-ratio vehicles. Currently, my focus is on asymmetric flight at incidence angles involving separated flow in which vorticity no longer stays bound to the wing. The consequence of this flow-field is that the aerodynamics and stability properties of the wing become highly non-linear in ways not captured by current modeling strategies.Publications:
My work includes the design, development, and maintenance of the hardware used for the data collection, control, and telemetry of Micro Aerial Vehicles (MAVs). This hardware is also expandable, allowing it to be modified for use with other UAVs and vehicles.
My research focuses on finding a general theory for ideal sensor placement to detect a distributed actuation. One application is to the artificial lateral line we implement for sensing and control in our autonomous underwater vehicle. Experimentally, I have been assisting with the test setup to validate the artificial lateral line.
Research Interests: Dynamics, Control and estimation methods in fixed-wing UAVs; Geometric and Nonlinear methods; Analog circuits.
My research focuses on novel design and fabrication techniques that enhance the utility and controllability of soft actuators for use in practical systems.