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Droplet simulation inside the channel

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Old   June 6, 2018, 11:20
Post Droplet simulation inside the channel
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Arash
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Hi every one

I am going to do a DNS simulation of a fixed droplet inside the channel with Phase Field method
but i don't know how to keep the droplet fixed?

does anyone have an idea or know a paper which is worked on the the droplet kept fixed?

I appreciate your suggestions.
Thanks
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Old   June 7, 2018, 05:48
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Quote:
Originally Posted by a.hajisharifi View Post
Hi every one

I am going to do a DNS simulation of a fixed droplet inside the channel with Phase Field method
but i don't know how to keep the droplet fixed?

does anyone have an idea or know a paper which is worked on the the droplet kept fixed?

I appreciate your suggestions.
Thanks
It's a two-phase flow problem,not very difficulty.The droplet is fixed,but the shape of the droplet is changing with the time,due to the contract angle with wall and the drag force are aslo changed.you can use the VOF model and try the caculation.
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Old   June 7, 2018, 07:22
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Is it a horizontal or a vertical chanel?

For vertical i would know a possible solution..

But horizontal .. hmm
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Old   June 7, 2018, 07:28
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Quote:
Originally Posted by 309558927 View Post
It's a two-phase flow problem,not very difficulty.The droplet is fixed,but the shape of the droplet is changing with the time,due to the contract angle with wall and the drag force are aslo changed.you can use the VOF model and try the caculation.
thanks for your reply but i should use Phase field model to capture interface (actually i have a diffuse interface not sharp)
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Old   June 7, 2018, 07:29
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Quote:
Originally Posted by BlnPhoenix View Post
Is it a horizontal or a vertical chanel?

For vertical i would know a possible solution..

But horizontal .. hmm
thanks for your reply,no it is a horizontal channel
but what is your solution ?
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Old   June 7, 2018, 07:37
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I dont understand your problem very well...

You have a diffusive droplet inside a horizontal chanel that needs to be fixed in position. Can you provide more information, is the interface tracked? Maybe a sketch can help


For a VOF type simulation in a vertical pipe it would be essentially a controlling problem to keep the position at a fixed heigth..

Regards
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Old   June 8, 2018, 00:01
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[QUOTE=a.hajisharifi;695046]thanks for your reply but i should use Phase field model to capture interface (actually i have a diffuse interface not sharp)[/QUO


I don't understand you said the interfaces.
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droplet simulation, multiphase modelling, phase field

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