Need to design an elbow
Need to design an elbow
(OP)
I have to design an elbow that is used to join pipes. I am using the language Modelica. Since i want to make the model to work at different elbow angles ranging from 0 to 90 Deg, i need to know the formula that relates this varying angle with the pressure loss coefficient, K.





RE: Need to design an elbow
ht
RE: Need to design an elbow
Thanx for the reply. i have tried the formulas from mathworks. there its written for a 90 Deg elbow the loss coefficient is K=30*f.For elbows with other angles there is a correction factor which is Kcorr=a(0.0142-3.703e-5a). Here a is the angle between 0 and 90. Next the revised loss coefficient is K=30*f*(a(0.0142-3.703e-5a)).Now, doesnt this term vanishes for a=0? Or i just have misinterpreted it !!..
RE: Need to design an elbow
RE: Need to design an elbow
So use the value from the reference in your model - which is approximate anyway) for those two cases.
RE: Need to design an elbow
jt