WEBVTT 00:00.300 --> 00:04.580 This is a typical window for conservative physics. 00:04.620 --> 00:11.580 Whenever you launch the software into this kind of interface. 00:12.570 --> 00:21.750 Okay you can select model wizard or you can select blank model now in blank model. 00:21.750 --> 00:30.240 There are three options you can do 3D simulation for example a 2D cylinder you can do to the simulation 00:30.570 --> 00:35.790 where is 3D cylinder can be represented by a circle. 00:35.790 --> 00:42.540 If the system is such that it doesn't matter if you're doing 3D or truly simulation you can do one day 00:42.540 --> 00:48.550 simulation so you can reduce the circle into a ring. 00:48.620 --> 00:51.050 Now all the three courses are not same. 00:51.060 --> 00:58.710 For example if you're working on system for example particle flow dynamics and so on 3D simulation might 00:58.710 --> 00:59.880 be very time intensive. 00:59.880 --> 01:08.070 It can take up to days to simulate then what people do is reduce the problem into a 2D circle. 01:08.820 --> 01:21.780 I study the physics which might take maybe 4 to 5 hours even if it is fine to do a one day simulation 01:21.810 --> 01:23.250 such as a ring. 01:23.310 --> 01:25.590 It might take maybe a few minutes 01:29.100 --> 01:31.500 to do the problem. 01:31.710 --> 01:35.400 I will explain you what are truly truly and one day simulation. 01:35.400 --> 01:40.750 For example I have a line I defined a line for example I'm explaining one day simulation. 01:40.770 --> 01:41.330 Okay. 01:41.340 --> 01:50.280 This is one day I have a line and I want to solve this writing equation so I have infinite potential 01:50.280 --> 01:52.930 well so these are infinitely high. 01:53.210 --> 01:56.500 And this is a well v equal to zero. 01:56.640 --> 01:58.900 So how do you want the simulation. 01:59.010 --> 02:03.010 You mark a line put two darts and you tell the software. 02:03.060 --> 02:12.380 Does this region have infinitely high potential and this region has infinitely high potential. 02:12.870 --> 02:22.990 And this is v equal to zero okay So note that we could have solved the problem by making a 3D model 02:23.860 --> 02:31.910 and defining a d region as infinitely high potential and this as V equal to zero. 02:31.910 --> 02:35.890 And this is also equal to infinite. 02:36.290 --> 02:39.920 But this is not useful to us. 02:39.920 --> 02:47.330 We can do the simulation in 1 D just by defining that we have infinite potential like two sides and 02:48.170 --> 02:51.440 zero potential at the center. 02:51.440 --> 02:57.950 So you can see how we can reduce a truly problem into 2D problem and what are we gaining from this. 02:57.950 --> 03:04.030 First of all if we do a 3D simulation you have to take up the making this a militant time the results 03:04.130 --> 03:05.510 and so on. 03:05.510 --> 03:11.750 For example the Edge edge effects and other phenomenons but in one day you don't have to care about 03:11.750 --> 03:12.990 all those. 03:13.250 --> 03:18.770 All you have is a line you defined the properties up the line at various points and do the simulation. 03:18.770 --> 03:22.170 Okay okay. 03:22.820 --> 03:26.520 So let's start in file. 03:26.600 --> 03:31.490 We have these options which is similar to every software in home. 03:31.580 --> 03:34.260 We have a model builder window okay. 03:34.460 --> 03:37.850 And go through this window one by one. 03:39.680 --> 03:42.480 So this is a model builder window here. 03:42.480 --> 03:49.610 We'll have all the options while doing the simulation for example the mesh the 3D model the physics 03:49.960 --> 03:51.750 the deserts analyses and everything. 03:52.310 --> 03:58.520 This is the setting window where we put all kind of boundary conditions and so on. 03:58.520 --> 04:02.670 This is the graphic window where we will see our model for example. 04:02.840 --> 04:07.420 In this example I will solve a cylinder to calculate the resistance of a cylinder. 04:07.430 --> 04:10.450 This will be present in the graphics window. 04:10.630 --> 04:12.800 Here you have components. 04:12.950 --> 04:13.970 These are the parameters. 04:13.970 --> 04:16.510 These are the variables we can add material. 04:16.520 --> 04:21.230 For example copper iron etc. This is used to add physics. 04:21.470 --> 04:25.920 This used to add study and so on. 04:25.970 --> 04:31.270 Okay now these are. 04:31.380 --> 04:35.710 This is the material library you can add as many materials as you want. 04:35.730 --> 04:38.410 This is the study. 04:38.550 --> 04:45.640 The research section for example you know you can work with to reply to the plot one day blah blah blah. 04:46.050 --> 04:46.650 And so on. 04:46.650 --> 04:51.450 You can have a guideline plot everything you can do basically. 04:51.570 --> 04:59.550 Okay now I'll go to file new blank model. 04:59.550 --> 05:03.450 So this is the interface of a blank model. 05:03.450 --> 05:12.310 Now I do a truly simulation so I right click Add to. 05:12.480 --> 05:18.610 See we have these options 0 0 1 the one the symmetric to the duly symmetric 3D and so on. 05:18.840 --> 05:30.350 So I select to know that when I select 3D I have an option for geometry which is the meter centimeter 05:30.380 --> 05:32.720 and so on I'll do centimeter. 05:32.840 --> 05:42.860 Now I'll go to geometry add a cylinder and what is the radius of the cylinder one and let the height 05:43.340 --> 05:44.940 be done. 05:45.230 --> 05:47.930 I think this is fine and the pacing is fine. 05:47.930 --> 05:54.030 Now when I click on bills or object it will be less in order for me. 05:54.110 --> 06:02.300 You can see I have a cylinder of radius 1 centimeter and a height of 10 centimeter. 06:02.540 --> 06:07.130 So this is 2 centimeter diameter and this is 10 centimeter. 06:07.940 --> 06:11.750 Okay. 06:12.690 --> 06:13.260 Okay fine. 06:13.470 --> 06:16.330 So I have the cylinder ready. 06:16.650 --> 06:19.270 Now what is the cylinder made of. 06:19.520 --> 06:23.440 And I have go to material I have to add a material. 06:23.880 --> 06:28.350 Let's say I want um copper 06:31.660 --> 06:35.340 so I search for some materials maybe in July. 06:35.340 --> 06:42.850 B let's click on copper and add to comprehend one Okay this is done. 06:43.020 --> 06:46.370 So I have copper and I have selected one. 06:46.470 --> 06:49.850 This is so very clear. 06:51.130 --> 06:54.920 You see I have a cylinder but copper is not selected. 06:55.000 --> 07:01.090 Now I'll click on copper and I click on the object you see here one will show up. 07:01.990 --> 07:04.090 This means one is the cylinder. 07:04.210 --> 07:10.040 For example if we have different objects you can select different materials for different objects. 07:10.540 --> 07:17.020 And these are the uh these are the properties of the copper. 07:17.020 --> 07:19.070 If we want you can change our laws. 07:19.090 --> 07:20.480 So this is totally cool. 07:20.590 --> 07:24.380 Now I have created a model. 07:24.680 --> 07:27.470 I have said the materials. 07:27.470 --> 07:28.840 Now it's time to create the mesh. 07:31.070 --> 07:36.500 But before creating the mesh uh I think I should go with the introduction once again. 07:37.130 --> 07:46.610 So I have a new you know what I did I created a component truly competent and in geometry I created 07:46.730 --> 07:55.310 a cylinder of radius 1 centimeter and height 10 centimeter and then I chose the material to copper. 07:55.350 --> 08:05.180 You could have chosen different material find in my next video I will show you how to mesh the object 08:07.010 --> 08:15.420 so this is uh for the video in this video I showed you how to create a geometry how to draw geometry 08:15.440 --> 08:19.710 basically and how to add material to geometry. 08:19.850 --> 08:22.700 Also I'll show you a simple example. 08:22.700 --> 08:28.880 For example you want to create a complex object let's say I go on to create a spear of one centimeter 08:29.030 --> 08:30.340 at the center. 08:30.350 --> 08:32.060 So you do build all object. 08:32.150 --> 08:37.040 You have a spear but you can't see because there is no the spear is one centimeter. 08:37.040 --> 08:40.540 So let's Jaws one point five centimeter radius. 08:40.610 --> 08:43.250 You see I have a spear and a cylinder. 08:43.370 --> 08:54.170 Now if you go to boolean partition and click on different object to add you add an object as the cylinder. 08:54.170 --> 08:56.200 And what is the object you are on the substrate. 08:56.210 --> 08:58.520 I click on the spear. 08:58.970 --> 09:01.100 What happens when I click on B on. 09:02.030 --> 09:11.600 I get a cylinder with one side which is bulging inward. 09:11.680 --> 09:18.830 What happens is that I have a cylinder okay. 09:19.000 --> 09:22.640 No I have a spear 09:25.180 --> 09:27.260 what I did. 09:28.090 --> 09:32.980 I added this cylinder and substructure the spear. 09:33.190 --> 09:41.920 So what happens when I do that I get a cylinder with one side bulging inward. 09:42.160 --> 09:48.730 So in my next video I will show how to mesh and what is meshing and why that is one of the most important 09:48.730 --> 09:51.150 part in any kind of simulation. 09:51.550 --> 09:51.970 Okay. 09:52.060 --> 09:53.100 Thank you.