open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi Alan,

I have two issues in current Blue Kenue.
1. If I create a new selafin(double precision) file, add variables from 2dm data, rename, save and close, and finally open it again in Blue Kenue a fixed start time (in my case 997 seconds precisely) is added to the selafin data. Because of this when I start the calculation in Telemac, the first time step will be the same fixed start time from selafin data. I noticed this problem in Older Alpha version (3.12.9) also.

2. The current version does not operate Map Objects function.

I have attached relevant pictures for my explanation below.

Kind Regard
Sandip

Hi sandip.lc,

Allow me to respond:

1. I have also noticed that the initial time is set to 997 s, but you can solve this problem by adding INITIAL TIME SET TO ZERO = YES to your .cas.

2. What are you trying to map? I don't have any problems with the Map Objects function with the 3.12.23.

Kindly

Hi Amalvir,

Thanks for quick response.
I tested with your suggestion and issue 1 is resolved during calculation. However it is quite strange that Blue Kenue store fictive Start Time for newly generated file.

Issue 2: I want to define friction at different section of mesh with a defined Polygon using Map Object. OR If I want to define Initial water depth for my model in predefined area using a polygon. In that case Map object does not work. This is not problem in Older version(3.12.9).

Kind regards

Nice for issue 1.

For issue 2, I think you have the same problem I described in the post #45715
You may take a look. There is indeed a bug and Alan is working on it. In the meantime, you need to save the polygon, then reopen it and it will work.

It works. Thanks!!!

I've moved your message to its own thread...

I'll take a look at what you wrote once I have some time this afternoon.

Kindly... Alan

I think I missed this thread.

Please upgrade to BK 3.12.24 - beta as per post #45925 and let me know if the issue(s) still exist.

Kindly... Alan

In the distant past, a new SLF file object that has a variable added, from say, the mesh generator, was defaulting to a start time (simulation time) value of zero.

And after many internal upgrades to the codebase, the code no longer uses zero as a default value. Instead, a few internally well known numbers are used and -997 is one such internal magic number. Hence the reason that you saw that number. Other magic numbers include -999 and -998...

All this to say that the next installer will have a new dialog box popup when saving a SLF object to disk. The dialog box will allow you to specify ANY start time (simulation time) that you want, including a value of 0000/00/00 00:00:00 (i.e. 0) if you wish.

Kindly... Alan

Alan,

If you are going to do this then you need to allow specification of a simple time in decimal seconds
as well as a date/time.
It is very often the case that Telemac simulations
are not tied to any particular date.

Just my $0.02

Cheers... Martin

BTW: I thought it was only old FORTRAN programmers that
knew the meaning of -999, etc.
IMHO they have no place in modern files.

Agreed... the dialog box's text is not very clear.

Here's an improved version:



Kindly... Alan

PS I'm not sure what old FORTRAN programmer's have to do with anything...