 So the next tutorial is going to be the almost the same thing we are going to miss the same geometry, but instead of Doing it by using one block. We are going to use two block. Okay, so it's the same geometry and I'm going to face the link for the second tutorial in the chat box You guys can start This tutorial is very similar to the previous one. The only difference is you are using two block instead of one So you guys can start it Sir for me this block mesh deep file Sheen that no such file is available. Do you want to create a new file? Where are you in which directory are you? Okay, you are in the channel 395 later. Yes Well, can you say in the screen? Yeah, I'm able to see the screen you have copied Channel 395. So you are in run directory. You have to go inside Your channel 3 95 Yes, you can see that right open form would be run. So you have to go inside channel 3 95 No, yeah, you can just press tab it will compete it for you Now press enter so now you are in channel 3 95 now if you do block mistake And since you are using I think you're using what? Okay, double SL. Okay. Nice That's very true. So still it's your own sentence. It's not there. It's asking you to create a new file You must go inside the system folder to access lock mistake Type CD system type CD system to go inside system folder Yeah, now you can use not back First of all, you should list using ls command and see if the file you are trying to open is it there or not So if it's not there, you will not be able to open it So 15 minutes have passed. So people who have completed the tutorial can raise their hand Okay, I see that people have completed the tutorials While there are still some people who are facing issues Tonight you can try to solve the issue Even though you were not able to complete this tutorial, you can do it in your own time And the issues that you face you can write to us in our contact CFD at the rate 4c.in We'll be happy to solve your issues Now I'm going to present and Show you The same thing that you did just now in case you have not done it You can view my screen So I'm again in the same time of fin 95 Since it was already copied I'm not going to show you how to copy that you have done it multiple time So I'm going to try notepad.exe and then system and block mess Dict be careful that if you whenever you're trying to open block mystic It is inside the system directory. So you have to give the path systems last block mystic It's not just notepad.exe and block mystic And when I press enter the block mystic file is Has been open So I'm again, I'm going to remove all this thing and I'm going to copy this thing And you I'm going to save this thing Somebody was asking me what is this cyclic Cyclic connects your one phase to other phases. It is useful when you are trying to simulate a very long geometry and you want to save computation and time You'll you'll use this when you are using your intermediate tutorial That is under That has not been published in our spoken tutorial, but it is soon it will soon be published Now the difference between the previous block mystic file and this block mystic file is this 2x block Previously you were using only one block. So you had only one of this. Now you have two of this So now you're using two block to make missile geometry and on top of that you are using this Thing called expansion ratio. So what expansion ratio does is It changes the size of the maze as you move away from the boundary Sometimes you may want to have fine boundary Fine messes at your boundary if you want to resolve boundary layer or according to your simulation According to your problem case, you may want to have fine messes at your boundary to do that we are using Expansion ratio I'm going to save this thing and I'm going to close this thing Now I'm going to type block mess to mess my geometry And it is done So again, I'm going to use dot result platform This will create a file result platform And now I'm going to open my file explorer and I'm going to click on my result to see the mess I'm going to click on the player And again click on surface and surface with edges Now I have two block And as you can see the messes are finer at the very edge That is at the boundary This is because of the expansion ratio that was given Okay now you understand what is the expansion ratio, right? So depending on the The expansion ratio that it has given You will have finer messes at your boundary If you do exactly opposite, you will have Fine messes here and large messes here That is also possible So This is the tutorial Now we have come to the end of this hand sensation