[vroembroem]

I am having troubles with making half circles as the leading edge and trailing edge of an airfoil.
I am specifying the centerpoint, beginning and end point of the circle and then I would like to have the left half of the circle, instead I am getting the right half of the circle. The only thing I could imaging is changing the beginning and the end point around, but that changes nothing. Is there any way to control which half of the circle I get?

[CFD-Lover]

Can you share pictures of what you are attempting to do and more details?

Thank you,

[vroembroem]

Please see the attachted image. I am trying to get the half circle on the left.
For that to happen, I typed in:

Circle (1) = {1, 2, 3 }.

The problem is that I am getting the circle on the right. So I thought I should change the beginning and end point around, in other words:

Circle (1) = {3, 2, 1 };

But this changes nothing and I still get the circle on the right. Is there any way to control which half of the circle you get?

[Flowkersma]

Hi,

Circle takes as a parameter start point, middle point and end point. So following code produces two half circles:

Point(1)={0,-1,0};
Point(2)={0,0,0};
Point(3)={0,1,0};

Circle(1)={1,2,3};
Circle(2)={3,2,1};

Regards, Mikko

Originally Posted by vroembroem

Please see the attachted image. I am trying to get the half circle on the left.
For that to happen, I typed in:

Circle (1) = {1, 2, 3 }.

The problem is that I am getting the circle on the right. So I thought I should change the beginning and end point around, in other words:

Circle (1) = {3, 2, 1 };

But this changes nothing and I still get the circle on the right. Is there any way to control which half of the circle you get?