Hello.
Welcome to another video.
In this video we'll talk about um props and selections.
These two sections.
So in selection I honestly I have never used much of all these features.
It is not very useful for all kind of physics but most probably it is used uh to select like multiple
uh domains for example I have a domain here.
You can select multiple domains in a particular component and then you can probably automate it depending
on your simulation.
So I do not have much idea about selection so I not talk much about it.
Let's talk about props now.
What is props.
This is interesting.
For example you have a piece of material and you want to do a full program measurement.
You know for right.
So you are supplying current through one channel and then you are taking out content from the other
and you are measuring voltage across the two.
And so this is where the current is flowing and you are measuring voltage.
So this is uh for probe measurement.
Okay.
Now these contact are known as probes where you are touching for example No.
Let me draw something else.
So let's say you have it register.
Okay.
How do you measure distance.
You flow current through the register and then you place two voltage probes across it.
Right.
Suppose this is one void and you are flowing one and current then distance is 1 0.
Okay.
So these are known as probes.
Okay fine.
Enough of talking.
Let's discuss about what can do.
So we have domain pro in domain probe.
You can basically select on it.
For example if I tell this input before age okay and if I select this one and what do will do it will
measure the temperature in Kelvin of this domain.
Fine.
So similarly suppose you have a complex symmetry you can set this as one domain and then you can add
another domain as this.
So now one domain will measure the temperature at one contact and the other domain will measure the
temperature at another contact.
And when you run the simulation it will give a table with the value of temperature of these two domains.
Okay so that is to.
Now let's talk about boundary pool.
What is the boundary probe in boundary probe.
It is quite similar to domain.
Well just that it can select one surface.
You see I have selected only one surface.
So this is used in boundary pool.
Similarly as each probe you can select an edge as a probe.
Okay so for example if I select this edge it will calculate the temperature of this edge.
We can also have global variable probe and boundary point probe.
So this is uh a boundary point probe where you can give a particular coordinate and select and then
accordingly it will have the boundary probes.
Okay.
So we have discussed about probes in this.
Let us talk about physics variable.
So in this you can have mass properties and more facing the value of all these.
Uh I've never used it in my properties.
You can define the density if you select physics interface it will have accordingly ah suppose you have
multiple physics you can select a particular physics and it will have the mass property of that particular
physics.
So these are very specific features which is not generally used in most simulations but if you have
a simulation where you need to change mass properties depending on physics then you might have to use
the mass properties feature that's it.
And the next video we will talk about the rest of the features in the definition window.
Thank you for watching.
I'll see you in my next video.