boundBox in OpenFoam

kraf · October 13, 2021, 03:24

Hello, I'm having some problems to understand the source code of a program in openfoam. For instance what is the meaning of a command boundbox could somebody help me to understand this lines?
Thanks for your help!
-----------------------------------------------------------------------------------------
Code:
boundBox* meshBB = new boundBox(this->points(), false);
vector span = meshBB->span();
delete meshBB;
scalar waterDepth = meshBB->max()[2]; // What is this [2]?
waterDepth = ibProperties().lookupOrDefault<scalar>
("waterDepth",waterDepth);
waterDepth = objectDictList()[objectID].lookupOrDefault<scalar>
("waterDepth",waterDepth);

LuckyTran · October 13, 2021, 05:24

I'm not familiar with where these particular lines of code can be found in the OpenFOAM programming but:

A boundBox is a class or structure that is defined by the extreme points of a box. To say it again, a box that is defined by its corners.

The 2nd line attempts to retrieve the extreme (the min and max) values using span. I presume this span gets used somewhere else in a way that is not shown here or maybe it is being used in a way that I don't intuitively understand right away.

kraf · October 15, 2021, 01:08

Thank you very much! It really helped me to understand the code.

October 13, 2021, 03:24	boundBox in OpenFoam	#1
kraf New Member Ibaraki Join Date: Jul 2021 Posts: 9 Rep Power: 5	Hello, I'm having some problems to understand the source code of a program in openfoam. For instance what is the meaning of a command boundbox could somebody help me to understand this lines? Thanks for your help! ----------------------------------------------------------------------------------------- Code: boundBox* meshBB = new boundBox(this->points(), false); vector span = meshBB->span(); delete meshBB; scalar waterDepth = meshBB->max()[2]; // What is this [2]? waterDepth = ibProperties().lookupOrDefault<scalar> ("waterDepth",waterDepth); waterDepth = objectDictList()[objectID].lookupOrDefault<scalar> ("waterDepth",waterDepth);

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Frequently Asked Questions about Installing OpenFOAM	wyldckat	OpenFOAM Installation	3	November 14, 2023 12:58
OpenFOAM Training, London, Chicago, Munich, Sep-Oct 2015	cfd.direct	OpenFOAM Announcements from Other Sources	2	August 31, 2015 14:36
OpenFOAM Foundation Releases OpenFOAM v2.3.0	opencfd	OpenFOAM Announcements from OpenFOAM Foundation	3	December 23, 2014 04:43
Suggestion for a new sub-forum at OpenFOAM's Forum	wyldckat	Site Help, Feedback & Discussions	20	October 28, 2014 10:04
64bitrhel5 OF installation instructions	mirko	OpenFOAM Installation	2	August 12, 2008 19:07

October 13, 2021, 05:24		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,747 Rep Power: 66	I'm not familiar with where these particular lines of code can be found in the OpenFOAM programming but: A boundBox is a class or structure that is defined by the extreme points of a box. To say it again, a box that is defined by its corners. The 2nd line attempts to retrieve the extreme (the min and max) values using span. I presume this span gets used somewhere else in a way that is not shown here or maybe it is being used in a way that I don't intuitively understand right away.

October 15, 2021, 01:08		#3
kraf New Member Ibaraki Join Date: Jul 2021 Posts: 9 Rep Power: 5	Thank you very much! It really helped me to understand the code.