Hydraulic tubes
Hydraulic tubes are presented as multi-pole models with four poles ( four pole models). Four different tube models are in use (denoted by suffixes G, H, Y and Z) depending on input and output poles. Two two-pole models are in use for dead-end tubes of type g and h.
Ports:
- Q1 - Volumetric flow at the left end of the tube
- Q2 - Volumetric flow at the right end of the tube
- p1 (p1e) - pressure at the left end of the tube
- p2 (p2e) - pressure at the right end of the tube
Properties for tubes are as follows:
- l – length of tube, m
- d – inner diameter of tube, m
- K – bulk modulus of the tube material, bar
- s - thickness of tube wall, m
- nc - number of similar connected tubes
- kr - coefficient of correcting the stationary resistance of tube for dynamics
- epsap - allowed absolute error
- epsr - allowed relative error
- initQ1 - initial approximate value of Q1, m3/s
- initQ2 - initial approximate value of Q2, m3/s
- initp1 -initial approximate value of p1, Pa
- initp2 -initial approximate value of p2, Pa