Finned heat exchanger
 

I am designing a finned air cooled heat exchanger, It has around 24 tubes of 2 m length each, the fin density is around 200 fins/m. I want to perform the CFD simulation of it, but my problem is how to make the geometry with the fins in any software, can anyone please help me and can tell me which software is good for this purpose.

Thanks
Ankur