hi friends.
i m working on large industrial centrifugal fan to investigate causes of failure.
How to calculate forces acting on Large industrial centrifugal fan blade to be considered in the Finite Element modelling(specially fluid forces)?
are there any Formulas for calculating fluid force or i should use CFD simulation?
thanks for your recommendations.
In most centrifugal fans, the fluid forces are small compared to the mechanical and thermal ones. Failure modes are most often aggravated (driven) by vibration, temperature excursions, corrosion, and erosion. So... even if you produced an elegant and impressive FEM analysis, all that effort might not reveal anything about the failure mechanism(s). Presumably the original design (the way it's supposed to work) is stable and not the issue here.
dear Dr. Dudley J Benton
thanks for your answer.
as you said in centrifugal fan fluid forces are small and could be neglected. according to many paper exist about them.
as you predicted i performed some numerical simulation consisting of static analysis with regardless of the fluid force, modal analysis, CFD analysis, low and high cycle fatigue analysis for start and shutdown and normal operation conditions.after all of these efforts i found fluid forces can have important effect on fatigue of my case. that is why i want to more focus on fluid force.
i am agree with you on point mentioned about corrosion and erosion and i think Fractography might be useful. but Generally i think my job weakness is lack of some experimental work.
dear Fuchun Xue
thanks for your answer.
is there any advantage for Xflow in compare with ansys Fluent ?
firstly, xflow ane be used to co-simulation with abaqus; secondly, in my opinion, xflow has more powerful function than fluent, it can model complicated phenomenon.
firstly, xflow ane be used to co-simulation with abaqus; secondly, in my opinion, xflow has more powerful function than fluent, it can model complicated phenomenon.
firstly, xflow ane be used to co-simulation with abaqus; secondly, in my opinion, xflow has more powerful function than fluent, it can model complicated phenomenon.
firstly, xflow ane be used to co-simulation with abaqus; secondly, in my opinion, xflow has more powerful function than fluent, it can model complicated phenomenon.
dear Fuchun Xue
thank you.
i checked XFlow and i found xflow uses mesh-less method to solve problems.and also its speed process is better than fluent.i think it is needed to model my case in xflow.
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