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-   -   Locating maximum value (https://www.cfd-online.com/Forums/star-ccm/201003-locating-maximum-value.html)

abhishek2492 April 19, 2018 02:13

Locating maximum value
 
Is there a way to monitor the location of a maximum value, say maximum pressure on a boundary??
Specifically, I am working on a fuel tank sloshing VOF model and I am trying to locate the cells experiencing maximum pressure.
My idea was to create a FF to mark each cell with a threshold pressure value (eg. 1 for above threshold pressure and 0 for others) and the filter them using a threshold derived part. However, I am unable to implement this as I am new to CCM+ and to CFD itself.
Anyone has any idea how to go about this ??
It would be great to know if there is a way to visualise the location also.

acalado April 19, 2018 10:32

That threshold approach you describe seams feasible. Just search for tutorials using the field functions, it is quite easy to apply them. After you have this defined you can plot using that field function and you will see the highlighted volumes.

abhishek2492 April 20, 2018 01:34

Perfect. I did a little more digging and understood that scalar scene plotting a field with threshold works. However, this works for an entire region and not on specific boundaries. I have 6 faces on the tank which are in 6 different boundaries. I wanted to know the maximum pressure and its location on each wall. I am trying to solve this. Any help would be appreciated.

acalado April 20, 2018 10:03

Can't you simply use scalar scenes and choose the boundaries?

Or you can use field function to limit the search within a small distance from that boundary (i.e. use a range of x, y, z values)

ping April 22, 2018 09:39

you make the input part into each threshold just the required boundary rather that the whole domain


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