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Jupiter's shrinking red spot
Date:11/19/2008

y studying the fluid-mechanical interactions between transverse jets and the crossflow under a wide range of controlled conditions, the UCLA scientists learned that pulsing the transverse jet fluid in sinusoidal or square-wave patterns, depending on the conditions and desired outcome, can greatly enhance mixing, penetration or both. Continuing research will explore the behavior of transverse jets of different densities, which have a wide range of practical applications in energy-generation devices, such as stationary power plants and utility burners.

Davitian's talk, "Open Loop Control of Self-Excited Transverse Jets," will be given at 5:15 p.m. on Sunday, November 23, 2008, in Room 002B of the San Antonio Convention Center. Abstract: http://meetings.aps.org/Meeting/DFD08/Event/90049


7) MODELING EMBRYONIC HEART DEVELOPMENT

Congenital heart diseases affect one percent of newborn babies and babies who are lost in the prenatal period, and the malformation of the circulatory system is responsible for 10 percent of stillbirths.

To give scientists new insight into the developing heart, math biologist Laura Miller, an assistant professor of mathematics at the University of North Carolina, along with mechanical engineer Arvind Santhanakrishnan and graduate student Anil Shenoy, constructed several dynamically scaled models of the embryonic heart within rigid plexiglass walls. The models represent the morphologies of different stages in heart development, and provide insight into the flow within the developing heart. Corresponding numerical simulations by Miller couple the electrophysiology to the flow patterns within a beating heart.

These physical and numerical models will help scientists gain a better understanding of the relationship between the fluid dynamics, electrophysiology, and biochemistry of the embryonic heart, which may allow doctors to detec
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Contact: Jason Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

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