# Cavitation modeling

(Difference between revisions)
 Revision as of 00:31, 22 May 2007 (view source)Eluzai (Talk | contribs)← Older edit Revision as of 05:27, 13 June 2013 (view source)Shreyasr (Talk | contribs) m (→External links:: Added links to Tech CAE's blog post on setting up a Cavitation analysis on CFX)Newer edit → Line 30: Line 30: * [http://www.dynaflow-inc.com Dynaflow - Software for Bubble Dynamics modeling] * [http://www.dynaflow-inc.com Dynaflow - Software for Bubble Dynamics modeling] * [http://www.craft-tech.com/html/cavitation_res.html Combustion Research and Flow Technology Group ] * [http://www.craft-tech.com/html/cavitation_res.html Combustion Research and Flow Technology Group ] + * Tech CAE's Blog posts on setting up a cavitation analysis in CFX. [http://www.techcae.com/blog/?p=66 Part 1],[http://www.techcae.com/blog/?p=209 Part 2] {{Stub}} {{Stub}}

## Revision as of 05:27, 13 June 2013

Cavitation phenomena in physics is the phenomena of change in state (phase) of the matter (eg. water) from liquid to vapour due to pressure drop of the surrounding domain. This pressure drop usually happens when the liquid is in rapid motion (flow). The typical example of such phenomena is found in turbomachinery and hydrodynamics. In both cases this constitutes a limitation for the performances of the device that rotates the fluid because of the drawbacks of cavitation inception amongst which are:

• Vibrations
• Erosion
• Acoustic inconvenience

## Modeling techniques

A number of methods exist for modeling cavitation. They can be divided into the following classes:

• Level-set/volume-of-fluid methods
• Boundary Element methods
• Bubble dynamics modeling
• Interfacial transport techniques

## Cavitation codes:

• UNCLE-M - ARL/Penn. State - a preconditioned, homogenous, multiphase, Reynolds Averaged Navier-Stokes model with mass transfer
• CRUNCH - Craft-tech's RANS solver
• CAV2DBL - UT's two-dimensional panel method coupled with XFOIL boundary layer solver
• PROPCAV - UT's boundary element method for predicting cavitation on propellers