Hello.
Uh in this uh bonus lecture series I'll be going through a few examples basically to motivate you.
Why come so is an amazing tool in the field of research.
Basically this course is about the basics incomes and metaphysics but there's not much motivation to
why it could be useful in terms of research.
So the target of this bonus lecture is to give you a motivation that work what things can we do.
Incomes and metaphysics.
This is just like a tip of an iceberg.
Basically I'll give you a few examples.
There are millions of people working in the field of research on different kind of projects.
So let us take the first example.
So in this example uh I will show you the introduced the concept of effective the CBT in post media
by comparing the transport through an artificial porous structure.
You can see this in porous structure.
We have posted and um described detail in this model with simplified homogeneous um porous median approach
using effective transport properties so this is the geometry I see.
We have the geometry here and um.
Let me go one by one.
It would be easier for you.
So what we have we have a geometry section where we have prepared the poorest geometry.
Then we have added a physics
and what feels we have used we have used transport of diluted species physics by then um we have a mesh.
Okay.
And we uh.
Oh Wendy comment also we have two different studies and we have a set of blocks okay.
So this is the setup for this simulation.
Now if I go and show you the results you see this is the concentration profile.
C C for concentrating which is given in more by meter cube.
Now the interesting part.
So initially what we have is that wait until you see this in this blue region is the hype on some distant
vision.
You see Max and the flux is flowing through the right hand side.
And basically this is See you at the other end.
Now what will happen at equal to zero equal to zero if I blah.
Do you see the higher concentration is on the right and there is basically no concentration on the other
side.
Now if we take two millisecond and block the concentration is slightly shifting.
If you take higher time it will shift further.
If we take a millisecond you see how the concentration is moving up and you can press the arrow key
to go through the next time frame at 10 to 14 16 18.
And if I go to 100 milliseconds you see it is almost uniform.
So basically the concentration gradient is uniform.
So this is quite interesting.
And you can see even the supreme line plot also stream that is basically the part for the consistent
concentration gradient.
So these are the one deployed for the concentration on properties.
This is one example.
And let me go to the next example
Hello.
Welcome to the next example.
Here I show you an example of beam splitter we didn't beam splitter.
Let me explain In short.
So you have a black box.
Okay.
What it does is suppose you give an incoming beam it will split the beam into two different beams.
There is basically a beam splitter.
Okay.
So what we have we have a 2D geometry with two triangles and material we chose as plus fine.
And we have input and caution beam on this region and we have no input at the top.
Fine.
So let's quickly.
These are the other two regions.
And this is basically the two halves the contact between the two plus.
So how does it look.
When you run the simulation you get this kind of a plot set from this side.
You're having the input and then this is the region where mystically the contact between the two plus
and one part is moving up and the other part is going this way.
So this is a very good example of being a.
For example in your own words.
You can change the angle of this beams Peter.
He can use different materials you can use different frequency and yeah you can you do all the stuffs.
So this is another example.
Okay let's go to the next example
in this example you'll see how these cell phone antennas are designed.
So basically we have a model cell phone and the rings you see is basically the air sounding the phone.
So a lot of materials are used to define the model and the geometry is also a bit complex but that is
fine.
We use the temerity physics and what do we see.
We see that we get this kind of far afield plot.
So if you see the to the slice of the far field again basically the power of the antenna you see it
is the direction of the power shown here using different color profiles.
So you can optimize your antenna designs in your phone.
You can play with the various barometers and see which antenna design is performing better with your
particular frequency and the type of physics you are working.
So this is another example where it is very useful.
Let's go to the next example this is quite an advanced project.
So in this simulation you will see how camera lens designs and all can be done in comes remotely physics.
So we have a geometry that is a set of lenses in the major really use a different lens barometers and
all those things.
We use geometric optics physics module to study the simulation and after we study look how interesting
results we get.
You see for example the live ray of light is coming up.
I suppose you are standing here it reflects through different lenses depending on the function of the
lens.
And then we get the final image in the image sensor present here so we can get a lot of different kind
of players here.
You see the ray diagram plaque all the rays are converging and the sensor the spot diagram you can see
the house for study improving depending on the lens family you use.
So you can design a lens incomes and multi physics that is really amazing and their face other things
optical aberration diagram and all.
So this is another example where you see the how complex problems can be solved in so metaphysics.
Okay.
Thank you for watching and I hope you liked this cause and you learned a bit of it.
I assume that you are new in this course.
So this course will be beneficial only if you are totally new incomes and multi physics for people who
are already accustomed to comes in multi physics this might not be very useful but anyway I am there
to help you in case you are struck in any problem.
My contact details will be there somewhere in the core space or you can just text me mail me whatever
you can.
Thank you.
And Okay good luck.
Bye.