I have a couple of questions: - Why do you put the pressure only on a blade (and then the results seem like axil-symmetric? - What's the first warning you get? - What is the physical meaning of the modal results? I never understood these analysis
1- When pump starts running, fluid will be pumped by single blade until it fullfilled. In practice, pump is started after had filled with fluid that being pumped, but this is the worst case scenario. It's axi-symmetric because centrifugal forces (caused by rotational velocity) have much bigger effect than the applied load.
2- It says model may be underconstrained, and I might have wrong results. But that isn't important because there is no singularity error after warning, so I can trust my results.
3- It says impeller will start behaving unsteadly, when those applied loads as harmonic loads at 1814,53Hz. Therefore, impeller's rotational velocity shouldn't be around of 1814,53Hz.
Nice video!
I have a couple of questions: - Why do you put the pressure only on a blade (and then the results seem like axil-symmetric? - What's the first warning you get? - What is the physical meaning of the modal results? I never understood these analysis
Thank you!
davidgruty 1 month ago
@davidgruty :Thanks.
1- When pump starts running, fluid will be pumped by single blade until it fullfilled. In practice, pump is started after had filled with fluid that being pumped, but this is the worst case scenario. It's axi-symmetric because centrifugal forces (caused by rotational velocity) have much bigger effect than the applied load.
mecharon 1 month ago
@davidgruty :
2- It says model may be underconstrained, and I might have wrong results. But that isn't important because there is no singularity error after warning, so I can trust my results.
3- It says impeller will start behaving unsteadly, when those applied loads as harmonic loads at 1814,53Hz. Therefore, impeller's rotational velocity shouldn't be around of 1814,53Hz.
mecharon 1 month ago
@mecharon thank you very much for the fast and nice answers!
keep it up!
davidgruty 1 month ago
Thank you a lot, mecharon!
mykahveli 1 month ago
Nice video very explanatory
Phoenixzs1012 7 months ago