How can I plot a vector field of altered value?

swtbkim · August 19, 2014, 06:53

Hi all!

I made a relative velocity by using Specify Equations as follows.

{velocityX_alter}={u}-20.35
{velocityMagnitude_alter}=sqrt({velocityX_alter}*{ velocityX_alter}+{v}*{v}+{w}*{w})

and I plot contours of these values successfully.

But I don't know how plot the vectors of them.
If I click Slice>Vector>Show Vectors, it seems to show velocityMagnitude, not velocityMagnitude_alter.

How should I do???

Thanks in advance!

swtbkim · August 19, 2014, 07:02

And please let me know how to draw streamtraces using altered velocity..

Thank you

swtbkim · August 20, 2014, 04:06

I got it!
And I leave a post for someone who may be in similar situation.

I clicked Plot>Vector>Variables in menu bar, and changed U variable into my altered variable, 'velocityX_alter'. Then vector and streamtrace are changed.

August 19, 2014, 06:53	How can I plot a vector field of altered value?	#1
swtbkim Senior Member Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 115 Rep Power: 12	Hi all! I made a relative velocity by using Specify Equations as follows. {velocityX_alter}={u}-20.35 {velocityMagnitude_alter}=sqrt({velocityX_alter}{ velocityX_alter}+{v}{v}+{w}*{w}) and I plot contours of these values successfully. But I don't know how plot the vectors of them. If I click Slice>Vector>Show Vectors, it seems to show velocityMagnitude, not velocityMagnitude_alter. How should I do??? Thanks in advance!

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August 19, 2014, 07:02		#2
swtbkim Senior Member Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 115 Rep Power: 12	And please let me know how to draw streamtraces using altered velocity.. Thank you

August 20, 2014, 04:06		#3
swtbkim Senior Member Sangwoo Kim Join Date: Jul 2014 Location: Seoul, South Korea Posts: 115 Rep Power: 12	I got it! And I leave a post for someone who may be in similar situation. I clicked Plot>Vector>Variables in menu bar, and changed U variable into my altered variable, 'velocityX_alter'. Then vector and streamtrace are changed.