@@LearnCAE OK.thank you I want to do a simulation of rotating stall in NASA HECC centrifugal compressor which has guide vaned diffiser and EGV . Do you think that it can be done for one section of the compressor and getting the result?
@@amirhosseinrjp5762 Hi, you may need full 360deg model for such simulations. Rotating stall prediction may be highly difficult to solve and computationally heavy as it may need lot of transient analysis.
@@amirhosseinrjp5762 Normal stall prediction will be comparatively easy than rotating stall prediction. For normal stall prediction, you can use single sector model.
Yes, it can be done. May I know what exactly you are looking for in unsteady simulation? There are other videos in the channel explaining unsteady simulation for axial rotors.
@@LearnCAEPressure fluctuation and it frequency analysis for this configuration will be interesting, and why not a validation of the unsteady simulation with experimental data because there is a difference between steady simulations and the data.
thank you. What is your computer system config?
12GB Ram, 12 core processor (3.2GHz)
@@LearnCAE thanks
I have one more question sir. How many element ( mesh) did you have in the full annulus model? I will appreciate if you say it🙏
Hi, I have made only one sector model for this case. In post processor tool, I have just duplicated the blades in full annulus to generate plots.
@@LearnCAE OK.thank you I want to do a simulation of rotating stall in NASA HECC centrifugal compressor which has guide vaned diffiser and EGV . Do you think that it can be done for one section of the compressor and getting the result?
@@amirhosseinrjp5762 Hi, you may need full 360deg model for such simulations. Rotating stall prediction may be highly difficult to solve and computationally heavy as it may need lot of transient analysis.
@@KirubakaranPurushothaman thanks. How about stall prediction? Would it be same hard too?
@@amirhosseinrjp5762 Normal stall prediction will be comparatively easy than rotating stall prediction. For normal stall prediction, you can use single sector model.
How you can passed without alignment , it seams diffuser not align. Could you explain ?
It need not be aligned, because it is circumferentially periodic.
thank you, can you perform an unsteady simulations for NASA CC3?
Yes, it can be done. May I know what exactly you are looking for in unsteady simulation? There are other videos in the channel explaining unsteady simulation for axial rotors.
@@LearnCAEPressure fluctuation and it frequency analysis for this configuration will be interesting, and why not a validation of the unsteady simulation with experimental data because there is a difference between steady simulations and the data.
@@cheikhbrahimabed4319 Ok. That can be done. I ll create one and upload shortly.