Different meshing sizing in logitudinal and lateral direction
 

Hi,
hope you are doing good.
I am trying to mesh a geometry which has longitudinal size of 550mm while in the lateral direction, its height is 1mm. This geometry is spiral in nature. I want to mesh it with 0.1mm sizing in the lateral direction and 10mm in the lateral direction. i am currently applying body sizing, which make the number of elements much higher that i cannot solve it in fluent. Can someone guide me that how i can mesh it with different sizing in lateral and longitudinal direction.
Thanks
Anxiously waiting for your reply.