WEBVTT

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Hi.

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Hello.

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Welcome to my lecture.

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So in this lecture um I will explain how to add physics in this simulation.

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So since I'm uh like explaining the basics of a transistor so I'll add physics and go to AC DC module

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and I'll go to electric and current and go to electric current.

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Okay.

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This is used in uh simulations which involve current voltage and so on.

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Now this is the physics we have.

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So it warms the electrical conductivity.

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Okay so copper.

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Uh let's say this is not copper and I want to put hundred just for simplicity.

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Little connectivity and relative maturity let's say 1 since this is just a demonstration.

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So it doesn't matter it depends what material it working uses to give the electrical connectivity of

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it.

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Okay.

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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

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is selected.

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So this boundary is for.

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Okay so I selected the ground.

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Now I right click and go to electric potential and I select this edge you see three is coming up and

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I said the test one for it.

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Fine.

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Now what will happen.

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So what does that actually mean.

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Firstly when you select the electric current physics the region which is being highlighted is under

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that particular physics.

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So had the whole model is in blue so electric current physics is applied to this whole model.

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Now this is the current conservation.

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So I'm telling the software the current is conserved in this particular cylinder.

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You can set up the electric insulation and so on.

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Now you look to install insulation selected in the cylinder outside region and not at the end because

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we have brown and sorts at the end.

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That's why software automatically picks up the region where electric insulation is needed.

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The initial value so initially the voltage is zero.

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We need to add initial value because you know when we are solving in a differential equation are integration

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when you get initial value we have the ground and we have the electric potential setup.

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So just to recap we have a model.

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We created a geometry a cylinder.

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We could add a material with connectivity hundred seamen per meter and then we added the physics.

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So how the system will behave.

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We have one void at one end and ground and the other.

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If I draw we have one void and ground okay.

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Okay.

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So in my next video I'll explain how to ultimately solve this problem.

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Okay.

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So we have the physics setup we just need to solve and analyze our reserves.

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Okay so we'll see you in my next video.

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Thank you.