[Faculty] Fwd: [CSRC.COLLOQUIUM] "Hydrostatic and Nonhydrostatic Pressure in Ocean Models"

[Jose Castillo]

<https://lh3.googleusercontent.com/-ZPFNPh16sR0/Wt39FrXUP-I/AAAAAAAAAaw/3wQunGe20lUopmV_ggfPaDwE9cVAgVzxgCLcBGAs/s1600/image001.jpg>

DATE:  *Friday, May 4, 2018*



TITLE:  *Hydrostatic and Nonhydrostatic Pressure in Ocean Models*



TIME:  *3:30PM*



LOCATION:  *GMCS 314*



SPEAKER:  *Paul Choboter, Ph.D.*
*, Mathematics Department, California Polytechnic State University*



ABSTRACT:
In fluids, spatial variations in pressure generate forces that can
accelerate the fluid. The dominant pressure gradient in the ocean is the
increase in pressure as you move down into deeper water. However, this
pressure gradient largely causes no acceleration because the vertical
pressure gradient is in near-perfect balance with the force of gravity. The
assumption that the vertical pressure gradient is in perfect balance with
gravity is called the hydrostatic approximation. This approximation, known
to be quite accurate at large scales, is common in ocean modeling. Relaxing
the hydrostatic approximation to account for nonhydrostatic pressure
gradients in ocean models turns out to be a significant numerical challenge
because you need to compute the relatively small difference between two
large terms. In this talk, the details of the hydrostatic approximation are
explained, and the techniques of relaxing that approximation are discussed.
  HOST:  Jose Castillo







Dr. Jose E. Castillo
Director/Professor
Computational Science Research Center
5500 Campanile Drive
<https://maps.google.com/?q=5500+Campanile+Drive+%0D%0ASan+Diego&entry=gmail&source=g>
San Diego State University
San Diego, CA  92182-1245
(619) 59407205/3430, FAX (619) 594-2459

-- 
You received this message because you are subscribed to the Google Groups
"CSRC Colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to csrc.colloquium+unsubscribe at sdsu.edu.
For more options, visit https://groups.google.com/a/sdsu.edu/d/optout.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://engineering.sdsu.edu/pipermail/faculty/attachments/20180430/c52ee2b9/attachment.html>