Meaning of Range of Variable like Global velocity or Local velocity in CFD post?

RabiArya · July 19, 2021, 07:57

I am trying to plot a velocity field after a simulation. In the CFD-Post, while plotting the contour, I am getting the option as select Range : Local or Global. Both are giving different type of velocity profiles. What does this local and global velocity represent?

ghorrocks · July 19, 2021, 08:09

Local = the velocity range on the object (in this case, what object you are basing your contours on)
Global = the velocity range in the entire simulation

RabiArya · July 19, 2021, 08:24

What objects in the sense like the objects inside the domain or the object which I have selected my contour on like I have made a plane and made a contour over it, so here my plane becomes the object? Or if I have a airfoil in a domain, then my airfoil becomes the object?
Just curious

ghorrocks · July 19, 2021, 08:57

As I said, the object you are basing your contours on. So it sounds like it is the plane you are making the contours on.

July 19, 2021, 07:57	Meaning of Range of Variable like Global velocity or Local velocity in CFD post?	#1
RabiArya Member Rabi Pathak Join Date: Jul 2020 Posts: 32 Rep Power: 6	I am trying to plot a velocity field after a simulation. In the CFD-Post, while plotting the contour, I am getting the option as select Range : Local or Global. Both are giving different type of velocity profiles. What does this local and global velocity represent?

July 19, 2021, 08:09		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Local = the velocity range on the object (in this case, what object you are basing your contours on) Global = the velocity range in the entire simulation __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

July 19, 2021, 08:57		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	As I said, the object you are basing your contours on. So it sounds like it is the plane you are making the contours on. RabiArya likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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July 19, 2021, 08:24		#3
RabiArya Member Rabi Pathak Join Date: Jul 2020 Posts: 32 Rep Power: 6	What objects in the sense like the objects inside the domain or the object which I have selected my contour on like I have made a plane and made a contour over it, so here my plane becomes the object? Or if I have a airfoil in a domain, then my airfoil becomes the object? Just curious