|
[Sponsors] |
March 23, 2008, 10:24 |
How to detect the cavitation in water.
|
#1 |
Guest
Posts: n/a
|
I am solving a highly pressured gas-water flow. In some physical situations, water is cavitated. Can anyone advice me how to simulate this physical event? The fluid flow is compressible and inviscid.
|
|
March 24, 2008, 23:47 |
Re: How to detect the cavitation in water.
|
#2 |
Guest
Posts: n/a
|
What causes cavitation to be excited? Answer this question and you will know what to look for. Good Luck
|
|
March 25, 2008, 04:50 |
Re: How to detect the cavitation in water.
|
#3 |
Guest
Posts: n/a
|
Thanks for your reply. Water is cavitated when the pressure is lower than a vapor pressure. Experiments usually provide it as zero. Physically, it implies that water cannot sustain tension. Unlike solids, it is cavitated when subjected to a strong expansion wave.
To do, I implemented in the way that when the pressure is lower than zero, the calculated pressure becomes zero instead of any negative pressure. Thanks. |
|
March 26, 2008, 08:50 |
Re: How to detect the cavitation in water.
|
#4 |
Guest
Posts: n/a
|
Actually there're lots of cavitation models, but they can be difficult to implement if you don't have them in the code already. I don't have many references at hand now, just what I've found in Star-CD manual:
Schmidt, D.P., Rutland, C.J., and Corradini, M.L. 1997. 'A numerical study of cavitating flow through various nozzle shapes', SAE Technical Paper Series 971597, pp. 117-126. Kubota, A., Kato, H., and Yamaguchi, H. 1992. 'A new modelling of cavitating flows: a numerical study of unsteady cavitation on a hydrofoil section', J. Fluid. Mech., 240, pp. 59-96. The first one is for barotropic model, the second - for bubble two-phase model. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Water subcooled boiling | Attesz | CFX | 7 | January 5, 2013 03:32 |
High speed water jet cavitation | Richard | CFX | 0 | November 18, 2008 10:07 |
Non condensable gases for water - CAVITATION | Xa | FLUENT | 0 | April 2, 2008 11:30 |
Terrible Mistake In Fluid Dynamics History | Abhi | Main CFD Forum | 12 | July 8, 2002 09:11 |
uptodate water distribution network | fredius,magige,tanzanian,(e.a) | Main CFD Forum | 0 | January 27, 2002 07:10 |