BGMod Documentation / v3
BGMod handbook

Line resistance

Advanced component · equations, parameters and limits.

R₂Two-port hydraulic resistanceHydraulicResistance · Сопротивление линии

H1 and H2 hydraulic · no stored state

A bidirectional linear line loss between two pressure nodes. It packages a primitive R and a 1-junction.

Q₁ = (p₁ − p₂)/R   ·   Q₂ = −Q₁
Ploss = (p₁ − p₂)Q₁ = RQ₁² ≥ 0
Parameter
R > 0 [Pa·s/m³]; default 10⁹.
Outputs
Dissipated power (loss); read pressures and flows on the attached bonds to obtain the pressure drop.
Scope
No inertia or stored volume. The bench uses it as the explicit accumulator-branch resistance.

Classic bond graph

Classic bond graphH1 feeds a 1-junction; its outgoing bonds connect H2 and a one-port R.H11H2Rp₁, Qp₂, QΔp = RQ
Implemented internal graph: 1 + R. The junction enforces common through-flow and p₁ − p₂ − e_R = 0; R supplies e_R = RQ. Thus Q₁ = Q and Q₂ = −Q with flows positive into the block. A 0-junction would impose equal pressures and cannot replace this series 1-junction. Half-arrows set positive power references; dashed pink arrows carry signals only. Causal strokes are omitted because they depend on the connected model.