[Gmsh] 2D mesh error message

Yao-Cheng yaocheng2010 at gmail.com
Thu Jan 15 17:59:34 CET 2015


Hi Mikhaul,

My mistake. I'm trying different settings to fix that actually. The original geo file indeed has lc=1 but still fails. I have also tried lc=0.1 0.5.

I know it's ok if I have only 1 line or even 10k lines. But in my situation, I probably need to have up to 1 million lines. Any suggestion?

Thank you.

Best,
YC
> On Jan 15, 2015, at 6:26 AM, Mikhail Artemyev <artemiev.mikhail at gmail.com> wrote:
> 
> Hi,
> 
> Your lines have length 1, while the characteristic length of the mesh you defined was 10.
> What happens if you set lc = 1?
> With only one line embedded it works fine for me (and RandomFactor=1e-8), but I didn't try for all 50K of them.
> 
> Best,
> Mikhail
> 
> 
>> On 01/15/2015 02:29 AM, gmsh-request at ace20.montefiore.ulg.ac.be wrote:
>> Hi,
>> 
>> I have encountered the issue "*Identical points in triangulation: increase
>> element size or Mesh.RandomFactor*" in my 2D geometry file. After looking
>> into previous support mails, I changed the Mesh.RandomFactor to 1e-8, 1e-7
>> until 1e-2. However, it still fails. Could you tell me what other option I
>> should try since I am pretty new to Gmsh?
>> 
>> My geometry is simple. I have a surface with size 1100 by 210. Also, there
>> are 50K lines with length 1 embedded in that surface.
>> 
>> Thanks for your help in advance!
>> 
>> Best,
>> YC
> 




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