The most general Pump model is given as:
(1) | p_{\rm out}= F(q, p_{\rm in}) |
In many practical cases it simplifies (see Fig. 1) to:
(2) | p_{\rm out}=p_{\rm in} + ( p_{\rm max} - p_{\rm in}) \cdot F(q/q_{\rm max}) |
The pump characteristic curve F(x) can be usually approximated by quadratic equation:
(3) | F(x)= (1- x^m)^n, \, m > n |
and usually n=0.5 and m=1: F(x)= \sqrt{1- x}.
Fig. 1. Pump Characteristic Curve |
See also
Natural Science / Engineering / Device / Pump