Latest Boundary layer Stories

2011-11-28 11:28:50

How to improve the performance of the plasma actuators is a problem that is of great interest to many scientific researchers in the field of electrohydrodynamics. Professor WANG Lianze and his group from the School of Aerospace, Tsinghua University, set out to investigate this problem. They developed novel plasma actuators using various winding-shaped electrodes to create plasma actuators which induce three-dimensional variations in the shear layer, offering significant flexibility in flow...

2011-09-12 11:24:22

Preliminary research on Fusarium, a group of fungi that includes devastating pathogens of plants and animals, shows how these microbes travel through the air. Researchers now believe that with improvements on this preliminary research, there will be a better understanding about crop security, disease spread, and climate change. Engineers and biologists are steering their efforts towards a new aerobiological modeling technique, one they think may assist farmers in the future by providing an...

2010-06-16 21:53:27

Atmospheric research often focuses on clouds' impact on weather and climate. Yet even low clouds are a long way off, with a base some 6,000 feet above earth. University of Notre Dame fluid dynamics and engineering professor Harindra Fernando works the other end of the air column closer to home"”the bottom of the atmosphere in the city, which is known as the urban boundary layer. A report on his team's work appears in a recent journal article in Physics of Fluids, which is published by...

2009-12-03 12:00:05

Not only in the Earth's mantle, in the atmosphere and in the outer layers of the Sun, but also in a chemical reactor, the exchange of heat may not be as effective as originally thought. There, because warm fluid rises and hence induces movement, the turbulent convection can be 100 billion times stronger than in the typical cooking pot. Hot fluids mix turbulently with warm fluids. As the temperature difference between the cold and warm sides increases, the heat transport increases...

Latest Boundary layer Reference Libraries

2009-07-18 12:56:04

Turbulence (or turbulent flow) is characterized by chaotic, random property changes. Turbulence occurs with low momentum diffusion (spreading of atmospheric properties), high momentum convection (vertical transference of atmospheric properties), and rapid variation of pressure and velocity in both space and time. A flow that is not turbulent is known as laminar flow. A vortex moving at low speeds will most likely cause laminar flow, and as speeds increase a transition is made to turbulent...

More Articles (1 articles) »
Word of the Day
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'