problem in meshing - urgent ! help please

khairul hadi

hi all...

I a little bit problem in meshing by using GAMBIT software...

My project is need to determine laminar flow in rectangular minichannel ( 1mm x 1mm )...

after done drawing 1mm x 1mm square, then face it, then i try mesh face and choose interval count = 100, so as the result i get as this

http://img171.imageshack.us/img171/8364/1mmx1mmkm3.jpg

why it show curve at 4 corners? why this happen? how can i fix it? or it is normal so small size?

then i try meshing with same shape but this time is 1m x 1m, an as a result, i get this

http://img165.imageshack.us/img165/1...x1meternd5.jpg

its look ok this time..no curves around its 4 corner...

so anyone, please help me to fix this...or any idea? thanks for read.. best regard