What is the accepted percentage of error? in case of I developed a mathematical model for the parameters of pump, when the flow is turbulent? What is the accepted percentage of error? in case of I developed a mathematical model for the parameters of pump, when the flow is turbulent? compared with the reported values of previous studies?
First, "error" means you know the "exact" value, a thing that is difficult to immagine to have in a real flow in pump.
Then, assuming you have some experimental value to compare with, the percentage of the difference can depends on the specific variable. Furthrmore, in a preliminary stage, a larger difference can be acceptable while in a more advanced stage you need to be more strict.
If you do error analysis the accepted % is 5% . The difference between theoretical and experiments can be allowed up to 10%
Ten percent is usually good for engineering work. But in research and scientific works and even design and installation of turbines, even 1% is not acceptable.
I did not study your work.
jafar behtarinik
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