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PSC Tornado Visualization (2008)

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Frank Chambers

PSC Tornado Visualization (2008)

The large scale stuff is from first principle fluid mechanics. Small scales are modeled. Questions are on initial conditions and boundary conditions. The Severe Storms Lab at OU has very good people.

P.S. Kelvin Droegemeier from OU has been Trump's Science Advisor since January, 2019. He was named acting director of NSF on April 1, until the new director, Sethuraman Panchanathan of Arizona State, is confirmed. Droegemeier is a member of a conservative Christian church, LIfe Church. He may have done a little to persuade Trump not to hold an anti-climate change review panel.

Frank Chambers

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jon zingale

Re: PSC Tornado Visualization (2008)

Nick,

In chat on Friday, you mentioned a research project

involving two helices (or possibly nested tori), with distinct

thermal properties and which exist at the core of a tornado.

Would you mind posing the problem here so that I and possibly

other members of the community can consider it?

Jon

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thompnickson2

Re: PSC Tornado Visualization (2008)

Jon,

It came from my watching of that luscious tornado video that Frank sent us.

I thought I got from that video a model of a super cell which involved two helically shaped pathways of air, one warm, moist, cyclonic and ascending and the other cooler, dryer anti-cyclonic and descending, both contributing to the rotation of the tornado. What struck me about this model is how much it relied on a total lack of friction between the two flows. Another thought that occurs to me is the role of hail stones in all of this. If you are a heavy hail stone and you are falling through the double helix, what exactly happens to you? Doesn’t centrifugal force keep ejecting you out the side of the helix you are in, or a the differential speeds between the two flows, do you always bounce back when you hit the seam between them. And speaking of lightening, is there any metaphor to be made between these two coils constantly moving by one another and a copper coil around an iron nail.

Here is where Dean Doug comes flying out of the ground and screams:

STOP TALKING ABOUT THINGS YOU KNOW NOTHING ABOUT! I am sorry, Doug. Just think of me as one of your parrots. I know not what I say.

Nick

Nicholas Thompson

Emeritus Professor of Ethology and Psychology

Clark University

[hidden email]

https://wordpress.clarku.edu/nthompson/