[oozcan]

Hi all,

I couldnt do or come into mine mind how to see mass flow rate value . It is really hard to explain this but some screenshots may be effective

First screenshot is model I have done. It is a single body.

Second one is its zoomed state. Small nozzles are seen right there and air passes through and moves out.

Third one is part to consider. Right there there is a surface and I would like to see what mass flow rate value is right there.

Outer faces are wall, that is why I couldnt do anything .

Is there any thought(s) ?

Thank you advance,

Kind Regards,

[Antanas]

Originally Posted by oozcan

Hi all,

I couldnt do or come into mine mind how to see mass flow rate value . It is really hard to explain this but some screenshots may be effective

First screenshot is model I have done. It is a single body.

Second one is its zoomed state. Small nozzles are seen right there and air passes through and moves out.

Third one is part to consider. Right there there is a surface and I would like to see what mass flow rate value is right there.

Outer faces are wall, that is why I couldnt do anything .

Is there any thought(s) ?

Thank you advance,

Kind Regards,

After calculaton you may, for example, open your results in CFD-post, then create section plane/surface in the area of interest and calculate massFlow() at this locator. Also you may create postprocessing objects and calculate fluxes directly in Fluent.

[oozcan]

it doesnt come to nothing, is there anything to do in DM? it is like a surface body?

[Kushal Puri]

Originally Posted by oozcan

it doesnt come to nothing, is there anything to do in DM? it is like a surface body?

What is the boundary type of the surface where you are checking the mass flow.? I means it is a wall, interior or user created surface in the fluent?

[Antanas]

Originally Posted by oozcan

it doesnt come to nothing, is there anything to do in DM? it is like a surface body?

Hmm... What?

[oozcan]

Originally Posted by Antanas

Hmm... What?

third screenshot in first post is surface body I uploded it to clearly see everyone on purpose.

[oozcan]

Originally Posted by Kushal Puri

What is the boundary type of the surface where you are checking the mass flow.? I means it is a wall, interior or user created surface in the fluent?

As you can see, there are lots of holes or nozzle what you refer to,

as flow is passing through there, wall bc's are defined as each exterior faces as usual. I need to get all faces of interest,so, I could easily find out what mass flow rate value is.

Hint: an example of faces of interest : It is to be shown third screenshot in first post.

Kind Regards,

[Kushal Puri]

Originally Posted by oozcan

As you can see, there are lots of holes or nozzle what you refer to,

as flow is passing through there, wall bc's are defined as each exterior faces as usual. I need to get all faces of interest,so, I could easily find out what mass flow rate value is.

Hint: an example of faces of interest : It is to be shown third screenshot in first post.

Kind Regards,

If it is wall bc then mass flow will be zero. How there will be a mass flow through wall.

[oozcan]

Originally Posted by Kushal Puri

If it is wall bc then mass flow will be zero. How there will be a mass flow through wall.

well,

I am trying to tell you step-by-step because it is hard to tell.

First two screenshots are total model, Air enters to closed system defined ''1'' and exits defined ''2'', that is clear,

As you can see, some holes are there in first two screenshots. Air passes through there,

Wall bc's are to be shown in third screenshots.

I would like to find out mass flow rate in a face as you see last screenshot.

How can I extract it? or split it? because I would like to easily see what values in there.

Kind Regards,

[KevinZ09]

What Kushal is trying to say is if you define those openings as walls, there can't be any mass flowing through it and hence the mass flow rate is zero. You can't even request the mass flow rate on the face.

But are the bottom and top of those holes actually walls or just interior faces? I can understand the side of those holes being walls, i.e., the green area in picture 3. But the question then remains is as what boundary type have you defined the bottom and top of those cylindrical holes? Meaning the gray face with the red circle around it in picture 4, is that a wall too or an interior face? If it's a wall, you can't find the mass flow rate there because there simply isn't any. If it's an interior face, just go to Reports --> Fluxes --> Set Up, select Mass Flow Rate and the face you're interested in. The exact same way as you would find the mass flow rate on faces you labelled with 1 and 2 in picture 2.

[oozcan]

Originally Posted by KevinZ09

What Kushal is trying to say is if you define those openings as walls, there can't be any mass flowing through it and hence the mass flow rate is zero. You can't even request the mass flow rate on the face.

But are the bottom and top of those holes actually walls or just interior faces? I can understand the side of those holes being walls, i.e., the green area in picture 3. But the question then remains is as what boundary type have you defined the bottom and top of those cylindrical holes? Meaning the gray face with the red circle around it in picture 4, is that a wall too or an interior face? If it's a wall, you can't find the mass flow rate there because there simply isn't any. If it's an interior face, just go to Reports --> Fluxes --> Set Up, select Mass Flow Rate and the face you're interested in. The exact same way as you would find the mass flow rate on faces you labelled with 1 and 2 in picture 2.

Well, thank you,

I am going to tell you basically what I want to do or try to do.

I have uploaded a screenshot that is drawn in CATIA in order to express it (it is an infinitesimal volume )

There is only one body in model. This is valid for fluid flow. That screenshot define an infinitesimal volume of interest myself. As you can see wall bc has been specified on outer surface of it. A face that is passing flow is part of sliced total fluid flow domain. That is why, I couldnt choose it easily.

Kind Regards,