WEBVTT 00:00.720 --> 00:01.660 Hello. 00:01.670 --> 00:08.750 Uh in this uh bonus lecture series I'll be going through a few examples basically to motivate you. 00:08.790 --> 00:15.210 Why come so is an amazing tool in the field of research. 00:15.240 --> 00:21.720 Basically this course is about the basics incomes and metaphysics but there's not much motivation to 00:21.780 --> 00:24.540 why it could be useful in terms of research. 00:25.020 --> 00:31.710 So the target of this bonus lecture is to give you a motivation that work what things can we do. 00:31.720 --> 00:33.630 Incomes and metaphysics. 00:33.630 --> 00:36.150 This is just like a tip of an iceberg. 00:36.160 --> 00:38.310 Basically I'll give you a few examples. 00:38.310 --> 00:43.560 There are millions of people working in the field of research on different kind of projects. 00:43.560 --> 00:46.450 So let us take the first example. 00:46.820 --> 00:55.410 So in this example uh I will show you the introduced the concept of effective the CBT in post media 00:56.010 --> 01:00.730 by comparing the transport through an artificial porous structure. 01:00.750 --> 01:02.670 You can see this in porous structure. 01:02.670 --> 01:11.880 We have posted and um described detail in this model with simplified homogeneous um porous median approach 01:12.390 --> 01:18.030 using effective transport properties so this is the geometry I see. 01:18.130 --> 01:21.450 We have the geometry here and um. 01:21.570 --> 01:22.690 Let me go one by one. 01:22.710 --> 01:25.000 It would be easier for you. 01:25.110 --> 01:33.540 So what we have we have a geometry section where we have prepared the poorest geometry. 01:33.540 --> 01:35.640 Then we have added a physics 01:39.490 --> 01:50.590 and what feels we have used we have used transport of diluted species physics by then um we have a mesh. 01:51.360 --> 01:52.580 Okay. 01:52.870 --> 01:53.940 And we uh. 01:54.160 --> 02:04.690 Oh Wendy comment also we have two different studies and we have a set of blocks okay. 02:04.840 --> 02:08.710 So this is the setup for this simulation. 02:08.710 --> 02:16.600 Now if I go and show you the results you see this is the concentration profile. 02:16.700 --> 02:20.530 C C for concentrating which is given in more by meter cube. 02:20.530 --> 02:23.650 Now the interesting part. 02:23.650 --> 02:33.070 So initially what we have is that wait until you see this in this blue region is the hype on some distant 02:33.070 --> 02:33.450 vision. 02:33.450 --> 02:38.510 You see Max and the flux is flowing through the right hand side. 02:39.080 --> 02:42.780 And basically this is See you at the other end. 02:42.820 --> 02:46.750 Now what will happen at equal to zero equal to zero if I blah. 02:46.750 --> 02:51.550 Do you see the higher concentration is on the right and there is basically no concentration on the other 02:51.550 --> 02:51.850 side. 02:52.270 --> 02:59.830 Now if we take two millisecond and block the concentration is slightly shifting. 02:59.840 --> 03:03.370 If you take higher time it will shift further. 03:03.370 --> 03:08.200 If we take a millisecond you see how the concentration is moving up and you can press the arrow key 03:08.260 --> 03:14.260 to go through the next time frame at 10 to 14 16 18. 03:14.320 --> 03:18.520 And if I go to 100 milliseconds you see it is almost uniform. 03:18.520 --> 03:23.500 So basically the concentration gradient is uniform. 03:23.500 --> 03:25.240 So this is quite interesting. 03:25.540 --> 03:32.590 And you can see even the supreme line plot also stream that is basically the part for the consistent 03:32.620 --> 03:34.500 concentration gradient. 03:35.500 --> 03:41.740 So these are the one deployed for the concentration on properties. 03:41.740 --> 03:42.830 This is one example. 03:43.370 --> 03:46.560 And let me go to the next example 03:50.460 --> 03:50.900 Hello. 03:50.910 --> 03:53.640 Welcome to the next example. 03:53.640 --> 03:59.200 Here I show you an example of beam splitter we didn't beam splitter. 03:59.310 --> 04:01.270 Let me explain In short. 04:01.440 --> 04:03.910 So you have a black box. 04:03.930 --> 04:05.090 Okay. 04:05.250 --> 04:14.940 What it does is suppose you give an incoming beam it will split the beam into two different beams. 04:14.940 --> 04:16.390 There is basically a beam splitter. 04:16.470 --> 04:18.280 Okay. 04:18.540 --> 04:29.340 So what we have we have a 2D geometry with two triangles and material we chose as plus fine. 04:29.820 --> 04:41.040 And we have input and caution beam on this region and we have no input at the top. 04:41.040 --> 04:41.700 Fine. 04:41.700 --> 04:43.440 So let's quickly. 04:43.860 --> 04:46.000 These are the other two regions. 04:46.140 --> 04:51.840 And this is basically the two halves the contact between the two plus. 04:53.100 --> 04:55.370 So how does it look. 04:56.790 --> 05:02.630 When you run the simulation you get this kind of a plot set from this side. 05:02.830 --> 05:12.780 You're having the input and then this is the region where mystically the contact between the two plus 05:13.380 --> 05:18.230 and one part is moving up and the other part is going this way. 05:18.240 --> 05:21.800 So this is a very good example of being a. 05:21.870 --> 05:23.830 For example in your own words. 05:24.120 --> 05:26.280 You can change the angle of this beams Peter. 05:26.280 --> 05:33.740 He can use different materials you can use different frequency and yeah you can you do all the stuffs. 05:33.870 --> 05:35.020 So this is another example. 05:35.670 --> 05:37.230 Okay let's go to the next example 05:39.940 --> 05:45.250 in this example you'll see how these cell phone antennas are designed. 05:45.370 --> 05:54.170 So basically we have a model cell phone and the rings you see is basically the air sounding the phone. 05:54.220 --> 06:01.900 So a lot of materials are used to define the model and the geometry is also a bit complex but that is 06:02.140 --> 06:03.010 fine. 06:03.160 --> 06:08.110 We use the temerity physics and what do we see. 06:08.110 --> 06:14.150 We see that we get this kind of far afield plot. 06:14.470 --> 06:22.900 So if you see the to the slice of the far field again basically the power of the antenna you see it 06:22.900 --> 06:29.120 is the direction of the power shown here using different color profiles. 06:29.350 --> 06:33.600 So you can optimize your antenna designs in your phone. 06:33.820 --> 06:41.530 You can play with the various barometers and see which antenna design is performing better with your 06:41.560 --> 06:45.550 particular frequency and the type of physics you are working. 06:45.640 --> 06:48.280 So this is another example where it is very useful. 06:48.790 --> 06:54.760 Let's go to the next example this is quite an advanced project. 06:54.780 --> 07:01.990 So in this simulation you will see how camera lens designs and all can be done in comes remotely physics. 07:02.010 --> 07:09.990 So we have a geometry that is a set of lenses in the major really use a different lens barometers and 07:09.990 --> 07:11.140 all those things. 07:11.430 --> 07:19.170 We use geometric optics physics module to study the simulation and after we study look how interesting 07:19.170 --> 07:20.340 results we get. 07:20.480 --> 07:23.810 You see for example the live ray of light is coming up. 07:23.840 --> 07:30.720 I suppose you are standing here it reflects through different lenses depending on the function of the 07:30.720 --> 07:31.430 lens. 07:31.560 --> 07:38.580 And then we get the final image in the image sensor present here so we can get a lot of different kind 07:38.580 --> 07:39.430 of players here. 07:39.440 --> 07:47.010 You see the ray diagram plaque all the rays are converging and the sensor the spot diagram you can see 07:47.010 --> 07:51.590 the house for study improving depending on the lens family you use. 07:51.600 --> 08:00.840 So you can design a lens incomes and multi physics that is really amazing and their face other things 08:00.870 --> 08:04.550 optical aberration diagram and all. 08:04.680 --> 08:13.550 So this is another example where you see the how complex problems can be solved in so metaphysics. 08:13.580 --> 08:13.970 Okay. 08:14.040 --> 08:20.890 Thank you for watching and I hope you liked this cause and you learned a bit of it. 08:21.120 --> 08:23.600 I assume that you are new in this course. 08:23.610 --> 08:29.970 So this course will be beneficial only if you are totally new incomes and multi physics for people who 08:29.970 --> 08:35.340 are already accustomed to comes in multi physics this might not be very useful but anyway I am there 08:35.340 --> 08:38.370 to help you in case you are struck in any problem. 08:38.610 --> 08:44.310 My contact details will be there somewhere in the core space or you can just text me mail me whatever 08:44.460 --> 08:45.890 you can. 08:45.960 --> 08:46.950 Thank you. 08:46.950 --> 08:50.280 And Okay good luck. 08:50.280 --> 08:50.540 Bye.