Finding the minimum of a field value

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 January 27, 2009, 09:34 Hallo again. To find the ce #1 Senior Member     Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 13 Hallo again. To find the cells containing the interface in interFoam I'm currently thinking about something like this. If (gamma-0.5) has a minimum-value, than there should be the cell containing the interface. min(gamma.internalField()[cellI]-0.5) Well, how can I check if this min is true? I think the coordinate of the cell containing the mininum can be accessed by .mesh().C()[cellI] ? Any ideas? __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

 January 27, 2009, 12:14 Hallo, min will return the #2 New Member   Nat Trask Join Date: Mar 2009 Location: Providence, RI Posts: 17 Rep Power: 10 Hallo, min will return the global minimum of a field, when I want to do something like that I usually use the pos and neg functions. i.e. pos(gamma-0.5) will return a volScalar field that is zero if gamma is less than 0.5 and 1 otherwise. neg(gamma-0.5) would return a 1 if its greater than 0.5. You can then loop through the field and pick off the cells equal to 1. -Nat

 March 10, 2009, 08:22 You mean I should loop through #3 Senior Member     Sebastian Gatzka Join Date: Mar 2009 Location: Frankfurt, Germany Posts: 729 Rep Power: 13 You mean I should loop through the field an pick the cells where pos(gamma-0.5) and neg(gamma-0.5) both are equal to 1 ? Or did I get it wrong? __________________ Schrödingers wife: "What did you do to the cat? It's half dead!"

 August 26, 2010, 09:12 #4 Senior Member   Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,234 Blog Entries: 1 Rep Power: 18 did you find any way to find those cells which contains interface ? if yes what was ur solution ?

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