open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello
I am using Blue kenue to build my mesh. However I have read that I need to have a well-oriented mesh and domain area. My domain area is in Mercator projection therefore, I would like to know how can I oriented my domain in Blue kenue in order to add the following commands words in my steering file.
(LATITUDE OF ORIGIN POINT and LONGITUDE OF ORIGIN POIN) because as far as Understood the projection is supposed to be done around this point, but how can I do that? I know that I need to include that words with the coordinates of my reference point in my sterring file but my questions is related to how can I do that in Blue Kenue.

For example I want the reference point at
X = -111.902617 Longitude West
Y = 23.107399 Latitude North (Near to the Gulf of California entrance)
Equal in Mercator as:



X_Mercator = -12456942.331691
Y_Mercator = 2628249.228182

Thank you
Joel

Hello,

By well oriented mesh we mean that all the triangles have their points 1, 2 and 3 given in the counter clock-wise sense. This is naturally done by Blue Kenue and anyway Telemac will tell you if a triangle is not well oriented (case of some other mesh generators).

With best regards,

Jean-Michel Hervouet

Hello Jean

Thank you for your response. I think there was a misunderstanding with regards to my question and I am sorry about it.

I have two problems the first one was:

1. I am using Mercator to run my simulation and I would like to use a reference point in my steering file as a mentioned before. My query is how can I shift my domain area based that reference point.

2. When I ran a simulation in certain areas of my domain specially in high resolution I have got a message that my mesh some point in my mesh were no well-oriented. I supposed that it would be linked to the coordinates systems or the reference point I used in the steering file.

Now I understand that both questions are separate. However I would like to know about the reference point in Mercator projection. I have heard that I need to shifted my domain area relating to my reference point I am listing in my steering file but I do not know how can I do this.

Thank you
Regards
Joel