Iconic Diagrams\Hydraulics\Restrictions
Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Hydraulics).
This model describes the laminar flow through a component:
pa.phi = pb.phi = G*(pa.p - pb.p);
with the conductance calculated out of the flow (Q_nom) at a nominal pressure drop (p_nom).
G = Q_nom / p_nom;
The pressure at both ports has a lower limit which is equal to the vapour pressure. Therefore the actual equations used in this component are:
p1_lim = if pa.p < p_vapour then p_vapour else pa.p end;
p2_lim = if pb.p < p_vapour then p_vapour else pb.p end;
dp = p1_lim - p2_lim;
pa.phi = G*dp;
pb.phi = pa.phi;
There is no check on the validity of laminar flow in this component!
Ports |
Description |
pa, pb |
Both terminals of the hydraulic component. |
Causality |
|
fixed volume flow out pa fixed volume flow out pb |
|
Parameters |
|
p_nom Q_nom |
nominal pressure drop [Pa] flow at nominal pressure drop {m3/s] |