Post by Dave on Oct 2, 2012 23:20:29 GMT -5
Rayleigh-Taylor Stability and laminar flow
"The Rayleigh-Taylor Stability/Instability laws offer exhaustive statistical predictive ability to the interaction dynamics of fluids and gases (Taylor, R., J., Plasma Physics, Part C, 1961, Journal of Nuclear Energy.) Sounds extremely complicated, but is brilliantly displayed on the surface of Jupiter. Each cloud band is moving at different speeds. The turbulent edges where the two cloud bands interact form areas of Rayleigh-Taylor Instability. Rayleigh-Taylor Stability areas are near the center of the cloud bands where the cloud movements are smooth and undistributed. The smooth flowing areas are also defined as 'Laminar Flows,' which can rip along as in a jet stream, or meander along as a warm summer's day." www.ponderingconfusion.com/papers.php?id=expanding
I wrote this several years ago as a possible justification for a calm tropic habitable zone, for beast and human, between the planetiod pangea's surface and the gas giant atmosphere.
Here is another example of this same phenomena:
Hot Venus hides cold layer in its atmosphere
New Scientist, Joanna Carver, 2 October 2012
www.newscientist.com/blogs/shortsharpscience/2012/10/venus-cold-atmosphere.html?DCMP=OTC-rss&nsref=online-news
Earth's hotter, meaner twin is blowing hot and cold. ... As it turns out, sweltering Venus - average temperature a balmy 464 °C - hides a cold layer in its atmosphere. At 125 kilometres above the planet's surface, the weather is -175 °C with a good chance of carbon dioxide ice.
It is the ice that causes the brighter regions in the atmosphere. It's much colder there than anywhere on Earth, despite the fact Venus is closer to the sun.
This discovery is a bizarre twist for a planet that is famously hot and inhospitable. Even though Venus is further from the sun, it's hotter than Mercury, the result of a killer greenhouse effect. The atmospheric composition is 96.5 per cent carbon dioxide.
Håkan Svedhem, ESA's Venus Express project scientist, said in a press release that the cold layer is unique, in that Earth and Mars don't have anything like it. He added that the finding is new and more time is needed to understand its implications.
True to form, Venus is keeping it mysterious.
Journal reference: Journal of Geophysical Research, DOI: 10.1029/2012JE004058
The image here is of the different laminar flows in the atmosphere of Jupiter.
"The Rayleigh-Taylor Stability/Instability laws offer exhaustive statistical predictive ability to the interaction dynamics of fluids and gases (Taylor, R., J., Plasma Physics, Part C, 1961, Journal of Nuclear Energy.) Sounds extremely complicated, but is brilliantly displayed on the surface of Jupiter. Each cloud band is moving at different speeds. The turbulent edges where the two cloud bands interact form areas of Rayleigh-Taylor Instability. Rayleigh-Taylor Stability areas are near the center of the cloud bands where the cloud movements are smooth and undistributed. The smooth flowing areas are also defined as 'Laminar Flows,' which can rip along as in a jet stream, or meander along as a warm summer's day." www.ponderingconfusion.com/papers.php?id=expanding
I wrote this several years ago as a possible justification for a calm tropic habitable zone, for beast and human, between the planetiod pangea's surface and the gas giant atmosphere.
Here is another example of this same phenomena:
Hot Venus hides cold layer in its atmosphere
New Scientist, Joanna Carver, 2 October 2012
www.newscientist.com/blogs/shortsharpscience/2012/10/venus-cold-atmosphere.html?DCMP=OTC-rss&nsref=online-news
Earth's hotter, meaner twin is blowing hot and cold. ... As it turns out, sweltering Venus - average temperature a balmy 464 °C - hides a cold layer in its atmosphere. At 125 kilometres above the planet's surface, the weather is -175 °C with a good chance of carbon dioxide ice.
It is the ice that causes the brighter regions in the atmosphere. It's much colder there than anywhere on Earth, despite the fact Venus is closer to the sun.
This discovery is a bizarre twist for a planet that is famously hot and inhospitable. Even though Venus is further from the sun, it's hotter than Mercury, the result of a killer greenhouse effect. The atmospheric composition is 96.5 per cent carbon dioxide.
Håkan Svedhem, ESA's Venus Express project scientist, said in a press release that the cold layer is unique, in that Earth and Mars don't have anything like it. He added that the finding is new and more time is needed to understand its implications.
True to form, Venus is keeping it mysterious.
Journal reference: Journal of Geophysical Research, DOI: 10.1029/2012JE004058
The image here is of the different laminar flows in the atmosphere of Jupiter.
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