Difference between revisions of "Griffith correlation"
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The gas holdup: | The gas holdup: | ||
:<math> H_G = \frac{1}{2}\ \left ( 1 + \frac{v_g+v_L}{v_s} - \sqrt{ \left ( 1 + \frac{v_g+v_L}{v_s} \right )^2 - 4 \frac{v_g}{v_s}} \right ) </math><ref name= Orkiszewski /> | :<math> H_G = \frac{1}{2}\ \left ( 1 + \frac{v_g+v_L}{v_s} - \sqrt{ \left ( 1 + \frac{v_g+v_L}{v_s} \right )^2 - 4 \frac{v_g}{v_s}} \right ) </math><ref name= Orkiszewski /> | ||
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| + | where: | ||
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| + | |||
| + | The liquid holdup: | ||
| + | :<math> H_L = 1- H_G </math> | ||
== Discussion == | == Discussion == | ||
Revision as of 15:53, 27 March 2017
Brief
The Griffith correlation is an empirical correlation which defines:
- The boundary between the bubble and slug flow
- The void fraction of gas in bubble flow - gas hold up HG
Math & Physics
The bubble flow exist when:
The gas holdup:
where:
The liquid holdup:
