[tim_shute]

Hi:
Repeated CFD simulation of a certain turbomachinery products (like vacuum cleaner, hair/hand dryer, blower/air mover and pump etc) with same components but different rotating part is inevetible, tedious and time consuming during selecting an appropriate rotating part. I would like to knwo if FloEFD's tools--user-defined fan and transfer result into a new simulation could relieve the working load and save time? My crazy thought include two points:

1. User-defined fan: replace rotating part with fully-enveloped sub-fluid domain (disable solid component) and add fan BCs into this sub-fluid domain. In this way, engineers have to initiate only one meshing process and use the meshing result (assum it is a good meshing) for further repeatition. Sounds nice. Here comes to the question, how to user-define a fan or input the P-Q curve? I tried to isolate a fan from the system but it seems the flow resistance/impendence is also needed.

2. Transfer result into a new simulation: isolate a fan from the system and do the external analysis and then transfer the result into a new simulation whose rotating part is replaced with fully-enveloped sub-fluid domain (disable solid component) as a BC and add other BCs into this model. Somehow, I feel kind of weird but I cant tell why. Actually, I dont think this mehtod can save time but it is a good way to resolve a large model under poor PC configuration.

Please give me slacker any comments on feasibility of this method, or advice/discussion on how to user-define a fan(P-Q curve)? Any is welcomed. Many THX in advance.