Circular cylinder

Hi Dear All,
Being as a new user for LBM. I want to know that any one have a part of code written in Fortran for circular cylinder (especially how to set the geometry of circular cylinder using Fortran that the shape of the circular cylinder for vorticity contour visualization exist using Tecplot). If any one have just such a part of code and share will be highly appreciated.
Thanks in advance
Yuan Chao Mei