WEBVTT 00:01.620 --> 00:02.370 Hello. 00:02.430 --> 00:05.310 Welcome to another video. 00:05.310 --> 00:10.060 In this video we'll talk about um props and selections. 00:10.290 --> 00:11.460 These two sections. 00:11.640 --> 00:17.240 So in selection I honestly I have never used much of all these features. 00:17.250 --> 00:26.700 It is not very useful for all kind of physics but most probably it is used uh to select like multiple 00:27.010 --> 00:29.970 uh domains for example I have a domain here. 00:30.000 --> 00:36.300 You can select multiple domains in a particular component and then you can probably automate it depending 00:36.300 --> 00:38.270 on your simulation. 00:38.310 --> 00:43.850 So I do not have much idea about selection so I not talk much about it. 00:43.860 --> 00:45.950 Let's talk about props now. 00:46.020 --> 00:48.260 What is props. 00:48.300 --> 00:49.950 This is interesting. 00:50.040 --> 00:57.470 For example you have a piece of material and you want to do a full program measurement. 00:57.540 --> 00:59.320 You know for right. 00:59.550 --> 01:09.090 So you are supplying current through one channel and then you are taking out content from the other 01:09.470 --> 01:12.810 and you are measuring voltage across the two. 01:12.810 --> 01:18.190 And so this is where the current is flowing and you are measuring voltage. 01:18.270 --> 01:22.070 So this is uh for probe measurement. 01:22.650 --> 01:23.860 Okay. 01:24.210 --> 01:31.960 Now these contact are known as probes where you are touching for example No. 01:32.100 --> 01:34.180 Let me draw something else. 01:34.180 --> 01:37.540 So let's say you have it register. 01:37.700 --> 01:38.600 Okay. 01:38.850 --> 01:40.150 How do you measure distance. 01:40.170 --> 01:48.370 You flow current through the register and then you place two voltage probes across it. 01:48.540 --> 01:49.440 Right. 01:49.470 --> 01:57.140 Suppose this is one void and you are flowing one and current then distance is 1 0. 01:58.220 --> 01:58.830 Okay. 01:58.980 --> 02:01.370 So these are known as probes. 02:02.830 --> 02:03.810 Okay fine. 02:03.990 --> 02:05.130 Enough of talking. 02:05.130 --> 02:08.680 Let's discuss about what can do. 02:08.730 --> 02:11.230 So we have domain pro in domain probe. 02:11.230 --> 02:12.690 You can basically select on it. 02:12.690 --> 02:26.580 For example if I tell this input before age okay and if I select this one and what do will do it will 02:26.580 --> 02:33.710 measure the temperature in Kelvin of this domain. 02:34.010 --> 02:35.360 Fine. 02:35.730 --> 02:42.480 So similarly suppose you have a complex symmetry you can set this as one domain and then you can add 02:42.540 --> 02:45.910 another domain as this. 02:45.930 --> 02:55.410 So now one domain will measure the temperature at one contact and the other domain will measure the 02:55.410 --> 02:57.690 temperature at another contact. 02:57.690 --> 03:05.310 And when you run the simulation it will give a table with the value of temperature of these two domains. 03:05.310 --> 03:07.210 Okay so that is to. 03:07.230 --> 03:10.180 Now let's talk about boundary pool. 03:10.430 --> 03:12.510 What is the boundary probe in boundary probe. 03:12.500 --> 03:13.660 It is quite similar to domain. 03:13.680 --> 03:16.500 Well just that it can select one surface. 03:16.500 --> 03:19.110 You see I have selected only one surface. 03:20.100 --> 03:22.680 So this is used in boundary pool. 03:22.710 --> 03:28.960 Similarly as each probe you can select an edge as a probe. 03:30.330 --> 03:36.720 Okay so for example if I select this edge it will calculate the temperature of this edge. 03:37.020 --> 03:40.520 We can also have global variable probe and boundary point probe. 03:41.040 --> 03:50.970 So this is uh a boundary point probe where you can give a particular coordinate and select and then 03:50.970 --> 03:54.390 accordingly it will have the boundary probes. 03:54.430 --> 03:55.080 Okay. 03:55.200 --> 03:58.150 So we have discussed about probes in this. 03:58.260 --> 04:00.210 Let us talk about physics variable. 04:00.210 --> 04:06.420 So in this you can have mass properties and more facing the value of all these. 04:06.490 --> 04:09.900 Uh I've never used it in my properties. 04:09.960 --> 04:18.240 You can define the density if you select physics interface it will have accordingly ah suppose you have 04:18.240 --> 04:24.120 multiple physics you can select a particular physics and it will have the mass property of that particular 04:24.120 --> 04:25.580 physics. 04:25.710 --> 04:32.820 So these are very specific features which is not generally used in most simulations but if you have 04:32.820 --> 04:37.980 a simulation where you need to change mass properties depending on physics then you might have to use 04:38.370 --> 04:42.050 the mass properties feature that's it. 04:42.540 --> 04:49.900 And the next video we will talk about the rest of the features in the definition window. 04:49.950 --> 04:51.080 Thank you for watching. 04:51.090 --> 04:53.190 I'll see you in my next video.