November 19, 2018 at 11:45 pmsherifrashwan247Subscriber
How I can define bubbles in the geometry domain?
How i can simulate the acoustic cavitation bubble?
November 20, 2018 at 4:21 amKeyur KanadeAnsys Employee
You may want to look at following
November 20, 2018 at 4:28 pmsherifrashwan247Subscriber
Thank you very much for the video, my question is that: should i define a spherical bubble in the geometry or it should be created on its own through simulation?
November 21, 2018 at 5:52 amKeyur KanadeAnsys Employee
You can define bubble dia in Fluent. No need to create it in geometry.
December 17, 2018 at 5:06 pmsherifrashwan247Subscriber
The goal is to model cavitation generated using a horn that vibrates in a bath of liquid and calculate the maximum collapse pressure produced.
I dont know how to enable the acoustic model and how to specify the boundary conditions?
The geometry is very simple 2D with one side oscillating by a certain frequency? should i apply the same model in the video while enabling the acoustic model as well? what do you kindly recommend?
December 17, 2018 at 5:18 pmDrAmineAnsys Employee
You will need to go 3d, use high resolution mesh of LES or better quality to get a well resolved pressure field to accurately describe cavitation and use a scheme to track the interface.
December 17, 2018 at 5:23 pmsherifrashwan247Subscriber
hi Sir, thanks do you have a sort of steps to follow to setup the model please?
December 17, 2018 at 5:30 pmDrAmineAnsys Employee
You might find some scientific papers dealing with it. You will see that some them are just using URANS approaches which might be considered as first step for very detailed analysis
December 17, 2018 at 5:35 pmDrAmineAnsys Employee
CFD Modeling of Low, Medium and High Frequency Ultrasound Waves Propagation Inside a Liquid Medium as example. Good luck
December 17, 2018 at 5:49 pmsherifrashwan247Subscriber
Is that a publication? Can you please attach the link because i can not find it online?
December 17, 2018 at 5:55 pmsherifrashwan247Subscriber
how to specify a free surface boundary condition? Is that a wall or something different?
December 17, 2018 at 6:47 pmDrAmineAnsys Employee
Free slip wall as general simplification.
December 17, 2018 at 6:49 pmDrAmineAnsys Employee
Yes publication. I do not share papers here.
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