Non meshed coil: Difference line - rectangle

Altair Forum User

Hello,

 

I modeled a cicular coil. In the coil section I can choose between rectangle and line. Both possibilities want to define the heigth and the width. I tried both with the same heigth and the same width, but get different solutions. 

What is the difference between the selections?

 

Thank you in advance.

asoualmi

Hello,

The difference between both non meshed coil with rectangle coil section and with line coil section is located in the current distribution. With the recangle coil section you have the current in the all volume of the coil. But in the case of line coil section , the current is ditributed at the surface. To see this, yu can create tow coils; with rectangle and line section. Do a simulation and plot the current density.

 

Best regards.

Altair Forum User

Thanks, but is it possible to plot the current density, when the coil is non meshed?

Because it doesn't show anything:

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

 

To understand: Flux simulates with the line section a coil, which has all ist wires in one Surface (like a coil with a thin wall/ all wires have the same radius). 

And with the Rectangular section it models a coil wich wires have different radius.

Is this assumption right?

 

Thank you in advance.

 

 

Balaji Viswanadh Gollapalli

@Abdessamed , I have a similar question about difference between different non meshed coil options. I wonder why should the shape of the coil should matter ? because these are any how not meshed at all and have no geometrical consequence. So why should it really matter whether I use rectangular coil section or Disk with Volume displaying of the coil or Line(current sheet) or Disc with displaying of the mean fiber of the coil. 

Why should it really matter? Whats the difference among all these Coil section types. Please kindly clarify. 

 

Balaji 

asoualmi

Hi,

The definition of non-meshed coil is a geometric entity of circular, rectangular or more complex shape, which superposes to the mesh and is independent from it. The computation of the magnetic field created by the distribution of current is then carried out using the Biot and Savart formula in analytic or semi analytic way.

Here a link to more the difference between different shape:

file:///D:/Altair/flux/Flux/Help/english/UserGuide/English/topics/MagnetoStatiqueLesSourcesNonMailleesSpecificite3D.htm?hl=meshed%2Ccoil

 

Hope it will help.

Best regards.