Hi.
Hello.
Welcome to my lecture.
So in this lecture um I will explain how to add physics in this simulation.
So since I'm uh like explaining the basics of a transistor so I'll add physics and go to AC DC module
and I'll go to electric and current and go to electric current.
Okay.
This is used in uh simulations which involve current voltage and so on.
Now this is the physics we have.
So it warms the electrical conductivity.
Okay so copper.
Uh let's say this is not copper and I want to put hundred just for simplicity.
Little connectivity and relative maturity let's say 1 since this is just a demonstration.
So it doesn't matter it depends what material it working uses to give the electrical connectivity of
it.
Okay.
Now I'll go right click and I'll click on ground so I will set this one in as down you see for boundary
is selected.
So this boundary is for.
Okay so I selected the ground.
Now I right click and go to electric potential and I select this edge you see three is coming up and
I said the test one for it.
Fine.
Now what will happen.
So what does that actually mean.
Firstly when you select the electric current physics the region which is being highlighted is under
that particular physics.
So had the whole model is in blue so electric current physics is applied to this whole model.
Now this is the current conservation.
So I'm telling the software the current is conserved in this particular cylinder.
You can set up the electric insulation and so on.
Now you look to install insulation selected in the cylinder outside region and not at the end because
we have brown and sorts at the end.
That's why software automatically picks up the region where electric insulation is needed.
The initial value so initially the voltage is zero.
We need to add initial value because you know when we are solving in a differential equation are integration
when you get initial value we have the ground and we have the electric potential setup.
So just to recap we have a model.
We created a geometry a cylinder.
We could add a material with connectivity hundred seamen per meter and then we added the physics.
So how the system will behave.
We have one void at one end and ground and the other.
If I draw we have one void and ground okay.
Okay.
So in my next video I'll explain how to ultimately solve this problem.
Okay.
So we have the physics setup we just need to solve and analyze our reserves.
Okay so we'll see you in my next video.
Thank you.