changes.mady.by.user Arthur Aslanyan (Nafta College)
Saved on Feb 01, 2020
...
p_{\rm out}= F(q, p_{\rm in})
In many practical cases it simplifies (see Fig. 1) to:
p_{\rm out}=p_{\rm in} + ( p_{\rm max} - p_{\rm in}) \cdot F(q/q_{\rm max})
The pump characteristic curve
F(x)= (1- x^m)^n, \, m > n
and usually