VOF & gravity

April 10, 2007, 07:20

Hello! I've been playing with the unit vectors in Gravity definition for my VOF analysis (water & air sloshing). But I found the results of VOF behavior before & after changing to be EXACTLY the same. As if the changes in gravity e.g. -0.8i+0j-0.2k for a condition of 1.7G magnitude has no effect on water sloshing. We know intuitively that this is not true! (Default G unit vectors are 0i+0j-1k for 1G magnitude). So, my G vector definition could be wrong or is there something else I need to rectify in the settings to have this desired gravity definition?

Urgently please if anyone could help

April 18, 2007, 10:24

Switch on Buoyancy for both phases.

April 18, 2007, 21:03

beautiful! right on the dot! thanks i will try for both phases now.

April 10, 2007, 07:20	VOF & gravity	#1
azmir Guest Posts: n/a	Hello! I've been playing with the unit vectors in Gravity definition for my VOF analysis (water & air sloshing). But I found the results of VOF behavior before & after changing to be EXACTLY the same. As if the changes in gravity e.g. -0.8i+0j-0.2k for a condition of 1.7G magnitude has no effect on water sloshing. We know intuitively that this is not true! (Default G unit vectors are 0i+0j-1k for 1G magnitude). So, my G vector definition could be wrong or is there something else I need to rectify in the settings to have this desired gravity definition? Urgently please if anyone could help

April 18, 2007, 10:24	Re: VOF & gravity	#2
Romuald Guest Posts: n/a	Switch on Buoyancy for both phases.

April 18, 2007, 21:03	Re: VOF & gravity	#3
azmir Guest Posts: n/a	beautiful! right on the dot! thanks i will try for both phases now.

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