Hi everyonenI am having similar problem/warning which is described in the attached picture.Despite the warning ,Calculation has been completed and obtained realistic results.nBlades Control volumes and surrounding face of the rotor disc defined as Rigid Body in Dynamic Mesh.I checked Dynamic Mesh Preview , it is ok.nCertainly not having such warning will make me more happy.nThanks in advance for your kind help.nRegards nTeomannn