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Calculation of radial field in the air gap
Posted 24 août 2017, 03:17 UTC−4 Low-Frequency Electromagnetics, Results & Visualization Version 5.2a, Version 5.3 1 Reply
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Hi,
Can any one help me with the calculation of radial field in the air gap. The expression of the field is, Br = Bx*cos(theta)+By*sin(theta).
Suppose I want to calculate Br at 10 location in the air gap. So I need to calculate theta at these 10 locations and separate out Bx and By component at these 10 locations from the solution and then evaluate this expression.
Can somebody give some idea how to do it? I tried to do it this way,
1> cut point 2d.. specified my point as x =52*cos(range(0,2*pi/10,2*pi)), 52*sin(range(0,2*pi/10,2*pi)).
2> derived value->point evaluation -- theta = atan(y/x) , this way I can calulate the angle at these points.
Now the problem is how to find Bx and By at these point and evaluate the expression Br = Bx*cos(theta)+By*sin(theta). I tried bndenv(rmm.Bx) to evaluate Bx at these points. However it couldn't work.
Can any one help me with this?
Thanking you,
Gaurav
Can any one help me with the calculation of radial field in the air gap. The expression of the field is, Br = Bx*cos(theta)+By*sin(theta).
Suppose I want to calculate Br at 10 location in the air gap. So I need to calculate theta at these 10 locations and separate out Bx and By component at these 10 locations from the solution and then evaluate this expression.
Can somebody give some idea how to do it? I tried to do it this way,
1> cut point 2d.. specified my point as x =52*cos(range(0,2*pi/10,2*pi)), 52*sin(range(0,2*pi/10,2*pi)).
2> derived value->point evaluation -- theta = atan(y/x) , this way I can calulate the angle at these points.
Now the problem is how to find Bx and By at these point and evaluate the expression Br = Bx*cos(theta)+By*sin(theta). I tried bndenv(rmm.Bx) to evaluate Bx at these points. However it couldn't work.
Can any one help me with this?
Thanking you,
Gaurav
1 Reply Last Post 24 août 2017, 04:13 UTC−4
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Posted:
7 years ago
Hi,
I think I got it now.
First choose the coordinate using cut point 2d and then evaluate it using derived value point evaluation as,
Br = rmm.Bx*cos(atan(y/x))+rmm.By*sin(atan(y/x))
Also I calculated theta separately using one more derived value and point evaluation as theta = atan(y/x).
Now the problem is that I want to plot Br with respect to theta. Can any one help with this? How to plot it? Keeping theta at x-axis and Br at y-axis.
Thanking You,
Gaurav
I think I got it now.
First choose the coordinate using cut point 2d and then evaluate it using derived value point evaluation as,
Br = rmm.Bx*cos(atan(y/x))+rmm.By*sin(atan(y/x))
Also I calculated theta separately using one more derived value and point evaluation as theta = atan(y/x).
Now the problem is that I want to plot Br with respect to theta. Can any one help with this? How to plot it? Keeping theta at x-axis and Br at y-axis.
Thanking You,
Gaurav