[Ingodwetrast]

Translated text from Russian to English with the help of Google translator
Hello everybody! I had an error at the moment when I run the preview mesh motion. The point is that I want to activate cell zone using the "Events" submenu, which is directly related to the "dynamic mesh" menu. This is the type of example with an internal combustion engine, when the intake and exhaust valve zones are activated or deactivated at a certain angle of rotation of the crankshaft. I will appreciate any help you give me.
P.S. for example, I created two rectangles in 2D, selected one rectangle and gave it a name using Named Selections. And after that in the event menu I chose that zone as a zone and such an error took off for me. Then you can suggest how to create such a zone so that I can activate it or deactivate it in the event menu.


Actually the error itself:
Error: list-remove: null list
Error Object: #f







SOLUTION OF THE PROBLEM. Only deactivated cells can be activated. And I tried to activate a cell that is not deactivated. And this error was issued
The question is this. Whether the cell zone will be activated after it has been deactivated. I just pretended, my cell disappeared, and then did not appear on the grid. Will the deactivated area be activated ??

[Ingodwetrast]

In short, it was clear. There is a project on the Internet, the engine of internal combustion. And it has all the necessary files, as people have posted it. And I want to do the same. But I cannot, in my own example, activate the cell zone, as this error crashes.

This is a working example downloaded from one of the sites. I can throw it to you. I repeat. I want to do what is shown in the figure myself.

[RaiderDoctor]

Could you go ahead and post the project so we have a chance to see what you are talking about? Thanks.

[Ingodwetrast]

So I decided to save the events of a normal (working) project and a project that does not work. And they are completely different.

Events of a normal (working) project or the one shown above your comment:
(
((active . #f) (name . "ex-valve-open") (start . 120.) (action 2 "ex-inter" (20) (28)))
((active . #f) (name . "in-valve-open") (start . 340.) (action 2 "in-inter" (11) (29)))
((active . #f) (name . "ex-valveclose") (start . 380.) (action 3 "ex-inter"))
((active . #f) (name . "in-valveclose") (start . 600.) (action 3 "in-inter"))
((active . #t) (name . "activate-exha") (start . 119.) (action 13 (5 4)))
((active . #t) (name . "deactivate-exhaust-port") (start . 381.) (action 14 (5 4)))
((active . #t) (name . "activate-inlet-port") (start . 339.) (action 13 (3 2)))
((active . #t) (name . "deactivate-inlet-port") (start . 601.) (action 14 (5 4)))
)

P.S. ex-valve-open....in-valve-close - create and delete sliding interface; activate-exha....deactivate-inlet-port - activate and diactivate cell zone.

Events of the failed project, which ended in an error:
(
((active . #t) (name . "create_slid_interface") (start . 10.) (action 2 "in" (9 10) (11 12)))
((active . #t) (name . "delete_slid_inter") (start . 360.) (action 3 "in"))
((active . #t) (name . "activate_cell_zone") (start . 9.) (action 13 (7 8)))
((active . #t) (name . "deactivate_cell_zone") (start . 361.) (action 14 (7 8)))
)

I noticed that they have differences in the letters #f and t #. What could this mean?


Although today I launched a working project and got:
(
((active . #t) (name . "ex-valve-open") (start . 120.) (action 2 "ex-inter" (20) (28)))
((active . #t) (name . "in-valve-open") (start . 340.) (action 2 "in-inter" (11) (29)))
((active . #t) (name . "ex-valveclose") (start . 380.) (action 3 "ex-inter"))
((active . #t) (name . "in-valveclose") (start . 600.) (action 3 "in-inter"))
((active . #t) (name . "activate-exhaust-port") (start . 119.) (action 13 (5 4)))
((active . #t) (name . "deactivate-exhaust-port") (start . 381.) (action 14 (5 4)))
((active . #t) (name . "activate-inlet-port") (start . 339.) (action 13 (3 2)))
((active . #t) (name . "deactivate-inlet-port") (start . 601.) (action 14 (5 4)))
)

[Ingodwetrast]

I can use a bandikam to record a video and put it on YouTube. It will show everything that I do for a couple of minutes. I can put a link to the video here, if so can be done.

[Ingodwetrast]

Originally Posted by RaiderDoctor

Could you go ahead and post the project so we have a chance to see what you are talking about? Thanks.

The problem is that I cannot activate or deactivate a certain zone of the cell at a certain angle of rotation of the crankshaft. Therefore, this error comes out.

I even began to do examples, but it does not work. It became even sad (((

[Ingodwetrast]

It is clear, no one will help me. If I find something, I will write below. Only I will write in Russian. Who needs it, they will translate with the help of a translator.

[RaiderDoctor]

Okay Ingodwetrast, thanks for posting more information about your project. You included a lot of images, which will really make it easier to troubleshoot. However, sometimes you describing your project is not detailed enough for some of us to begin working out your problem. This is why I asked if you could post the example project like you said you could.

Originally Posted by Ingodwetrast

In short, it was clear. There is a project on the Internet, the engine of internal combustion. And it has all the necessary files, as people have posted it. And I want to do the same. But I cannot, in my own example, activate the cell zone, as this error crashes.

This is a working example downloaded from one of the sites. I can throw it to you. I repeat. I want to do what is shown in the figure myself.

This will allow anyone who might know something about dynamic meshing and events to look into what possible issues you might be having, and better orient themselves to your simulation. Going off of what you just said, some of the gurus on here might automatically know what you're talking about, but a lot of us need some background info.

Finally, I know it's difficult, but you have to be patient with the forum. Most of us are fairly busy with our own work and can only help when we have a some free time. Best advice; post the example simulation, take some time, read through the manual and some other posts, and see if you can get a new perspective on the problem. In the meantime, more people will look at this and hopefully one of them might know what to do. Good luck!

[AlexanderZ]

I noticed that they have differences in the letters #f and t #. What could this mean?

it means TRUE or FALSE

best regards

[Ingodwetrast]

Originally Posted by AlexanderZ

it means TRUE or FALSE

best regards

Thanks)
Just not aware of such subtleties. I understand the reason for the campaign. I activate cell zone what is already activated, it's not work. As in the example of a worker. I tried to deactivate the zone first, and it is deactivated !! But then I set the event to activate it after that, and it is not activated. Maybe it is only visually or it really is.
I think to try to change the type from the interface to the wall when closing the valves. Can it work?

[Ingodwetrast]

SOLUTION OF THE PROBLEM. Only deactivated cells can be activated. And I tried to activate a cell that is not deactivated. And this error was issued
The question is this. Whether the cell zone will be activated after it has been deactivated. I just pretended, my cell disappeared, and then did not appear on the grid. Will the deactivated area be activated ??