TAGGED: cfd, expression, fluent, vof
May 23, 2022 at 12:15 pmAmirrSubscriberHello everyone I am using VOF model in Ansys FLUENT and going to calculate the droplet speed in every time step and monitor that.
I wrote this expression but it doesn't get a reasonable result, I wonder if somebody helps me about that
Average(IF(Volumefraction(phase='droplet')>0.99, Position.x, 0 [m]), ['fluid'], Weight='Mass')
Thank you in advance.
May 23, 2022 at 2:22 pmDrAmineAnsys EmployeeYour expression does not mass-weighed-average the speed but rather the position.
May 23, 2022 at 2:32 pmAmirrSubscriberthank you so much. so what is the correct version?
yes, here first I just want to know the x-location of droplet
then using the below one I am going to find the droplet velocity
Average(IF(Volumefraction(phase='droplet')>0.99, velocity.x, 0 [m]), ['fluid'], Weight='Mass')
but they are not worked
May 23, 2022 at 4:08 pmDrAmineAnsys EmployeeUse report definition directly without any expressions.
Your formula looks okay so I cannot judge your results. What do you want to do?
May 23, 2022 at 4:56 pmAmirrSubscriberI need the droplet phase speed, location (x, y, separately), how can I get that and monitor them as the simulation runs?
May 23, 2022 at 7:19 pmDrAmineAnsys EmployeeCreate report definitions then allow for writing them into file. You can moreover monitor them during the run.
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