Talking to Turbulence
07-31-13
Beverley McKeon, Professor of Aeronautics and Associate Director of GALCIT, and her colleagues have developed a new and improved way of looking at the composition of turbulence near walls, the type of flow that dominates our everyday life. "This kind of turbulence is responsible for a large amount of the fuel that is burned to move humans, freight, and fluids such as water, oil, and natural gas, around the world," Professor Mckeon describes. They have devised a new method of looking at wall turbulence by reformulating the equations that govern the motion of fluids—called the Navier-Stokes equations—into an infinite set of smaller, simpler subequations, or "blocks," with the characteristic that they can be simply added together to introduce more complexity and eventually get back to the full equations. [Caltech Release]
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research highlights
GALCIT
Beverley McKeon
Ian Jacobi Receives 2013 Richard B. Chapman Memorial Award
06-20-13
Ian Jacobi, a graduate student working with Professor Beverley McKeon, is the recipient of the 2013 Richard B. Chapman Memorial Award. Dr. Jacobi has studied the effect of roughness-based forcing on the turbulent boundary layer and investigated means by which macroscopic perturbation of the boundary layer can be used to control the small-scale flow physics important for the reduction of viscous drag. He is continuing his studies in fluid mechanics as a post-doctoral scholar at Princeton University, where he is exploring drag reduction from the perspective of low-Reynolds number micro-fluidic devices. The Richard B. Chapman Memorial Award is given to an EAS graduate student in hydrodynamics who has distinguished himself or herself in research.
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GALCIT
Beverley McKeon
Richard B. Chapman Memorial Award
Ian Jacobi
Taming Turbulence
08-29-12
"Turbulence is everywhere," says Professor Beverley McKeon—from continent-spanning weather systems down to the swirls of air your car leaves behind itself as you drive. "I think about things like ships, planes, and pipelines," she explains, noting that about half of the energy consumed by each of those three transportation systems goes to counteract turbulence-induced drag. In her Watson Lecture she notes that finding a way to reduce that turbulence by 30 percent would save the global economy well over $100,000,000 dollars in fuel costs annually. [Learn More]
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energy
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GALCIT
Beverley McKeon
President Obama Presents Three EAS Faculty with the PECASE
07-10-09
In a special White House ceremony, President Obama will be presenting three EAS faculty: John Dabiri, Assistant Professor of Aeronautics and Bioengineering, Beverley McKeon, Assistant Professor of Aeronautics, and Joel Tropp, Assistant Professor of Applied and Computational Mathematics, with the Presidential Early Career Awards for Scientists and Engineers (PECASE). "These extraordinarily gifted young scientists and engineers represent the best in our country," President Obama said. Dabiri,describes the idea behind his PECASE-winning research as "giving underwater vehicles the enhanced performance of fish (e.g. efficiency, stealth, and maneuverablity) without mimicking the shape and swimming motions of fish. Instead, we replicate the vortex dynamics in the wakes of swimming fish." His "bio-inspired systems" were used by Lydia Ruiz (PhD '09 Mechanical Engineering), to demonstrateincreases in vehicle propulsive efficiency of over 50 percent.
McKeon is receiving the PECASE for her research on fundamental questions in complex turbulent boundary layers. McKeon states that "the ultimate goal is to incorporate recent advances in the understanding of flow physics in order to develop low order models of flow over surfaces for Air Force applications". Tropp's PECASE-winning research "focuses on developing new algorithms for solving inverse problems, a basic challenge that arises throughout the mathematical sciences. Inverse problems also appear in medical imaging, in communication systems, in statistical data analysis, and a host of other areas." He uses tools from modern applied mathematics, such as optimization techniques and randomized algorithms to collect partial information about an object of interest, and incorporate additional background knowledge to develop a complete picture of the object.
Other researchers receiving the PECASE award this year are Joshua K. Willis from the Jet Propulsion Laboratory and the following Caltech Alumni Elizabeth Boon, (PhD '03 CCE), Markus J. Buehler, (Post doc in CCE) Michael J. Hochberg, (Ph.D. '06 EAS - Applied Physics), Justin K. Romberg, (Post doc in EAS - Applied and Computational Mathematics), Cecilia R. Aragon, (B.S. '82 PMA), Jason Graetz, (Ph.D. '03 EAS - Materials Science), and Ioannis Chasiotis, (Ph.D. '02 EAS - Aerospace).
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John Dabiri
CMS
Beverley McKeon
Joel Tropp
alumni
PECASE
Azita Emami, Julia Greer, and Beverley McKeon Receieve NSF Career Awards
03-12-08
The NSF has announced three NSF CAREER Awards to Caltech faculty so far this year; they have been awarded to: Azita Emami, Assistant Professor of Electrial Engineering, Julia Greer, Assistant Professor of Materials Science, and Beverley McKeon, Assistant Professor of Aeronautics. Emami's award is for her research on "Hybrid Data Communication in Advanced Integrated Systems"; Greer's awared is for "Experimental Investigation of Plasticity at Nano-scale via in-situ Mechanical Deformation"; and McKeon's award is for her research on "Morphing Surfaces for Flow Control". The CAREER program offers NSF's most prestigious awards for junior faculty members. The level and 5-year duration of the awards are designed to enable awardees to develop careers as outstanding teacher-scholars. The minimum CAREER award is $400,000.
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GALCIT
Julia Greer
Beverley McKeon
Azita Emami-Neyestanak
