AnsweredAssumed Answered

same study,internal or external?

Question asked by Hakam Al Zoubi on Aug 14, 2017
Latest reply on Aug 15, 2017 by Janko Stellaard

hello,am using the flow simulation to calculate the torque on a wind turbine

following this tutorial

Solidworks Flow Simulation - YouTube

i have noticed that he used internal study and set a computational domain

i have thought of using external study in same conditions,atmospheric pressure and air velocity,so i did 2 studies in external and internal

however i got completely different  result,there is no significant deference in pressure or velocity before the turbine blades between the two cases

but the pressure and velocity is very different across it

pictures shows pressure cut plots of turbine cross section of the two cases,and theirs a big deference in pressure ,so the torques were very different

now why there is such a difference?and which one should i use?