TestDoubleActingCylinder

This test case simulates a Double Acting cylinder with an external mass connected to the piston via a flange. The piston starts at the center position, with higher initial pressure in the fixed volume on the right side causing the piston to move left and stop when it hits the left chamber end. At 1 second, the pressure at the left side is increased, causing the piston to move right and stop upon hitting the right chamber end. The connected mass follows the piston movement, demonstrating the dynamic response of the cylinder and the attached load

Usage

HydraulicComponents.TestDoubleActingCylinder()

Behavior

Behavior of this component cannot be rendered because it includes path variables.

Source

"""
This test case simulates a Double Acting cylinder with an external mass connected 
to the piston via a flange. The piston starts at the center position, with higher 
initial pressure in the fixed volume on the right side causing the piston to move 
left and stop when it hits the left chamber end. At 1 second, the pressure at the 
left side is increased, causing the piston to move right and stop upon hitting the 
right chamber end. The connected mass follows the piston movement, demonstrating 
the dynamic response of the cylinder and the attached load 
"""
component TestDoubleActingCylinder
  double_acting_cylinder = DoubleActingCylinder(L = 1.0, M = 0.2, area_a = 0.001, area_b = 0.001, s0 = 0.5) {
    "Dyad": {"placement": {"diagram": {"x1": 450, "y1": 400, "x2": 550, "y2": 500}}}
  }
  port_a_side = BoundaryPressure() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 290, "y1": 400, "x2": 190, "y2": 500, "rot": 180}
      },
      "tags": []
    }
  }
  fixed_volume = FixedVolume(p0 = 1e6, vol = 100) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 690, "y1": 420, "x2": 790, "y2": 520, "rot": 0}
      },
      "tags": []
    }
  }
  step = BlockComponents.Step(start_time = 1, height = 2e6) {
    "Dyad": {
      "placement": {
        "diagram": {"x1": 20, "y1": 180, "x2": 120, "y2": 280, "sw": 0.1, "sh": 0.1, "rot": 0}
      }
    }
  }
  mass = TranslationalComponents.Mass(L = 1, m = 0.5) {
    "Dyad": {
      "placement": {
        "diagram": {"x1": 590, "x2": 690, "y1": 620, "y2": 720, "sh": 1, "sw": 1, "rot": 0}
      }
    }
  }
  path medium::AbstractMedium = IsothermalCompressible(bulk_modulus = 1e9, let_gas = false)
relations
  initial double_acting_cylinder.port_a.m_flow = 0.0
  connect(port_a_side.port, double_acting_cylinder.port_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(step.y, port_a_side.p) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 156.5, "y": 230}, {"x": 156.5, "y": 450}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  continuity(medium, fixed_volume.port.medium)
  continuity(medium, port_a_side.port.medium)
  connect(double_acting_cylinder.flange, mass.flange_a) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 500, "y": 670}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  connect(fixed_volume.port, double_acting_cylinder.port_b) {
    "Dyad": {
      "renderStyle": "standard",
      "edges": [{"S": 1, "M": [{"x": 620, "y": 470}, {"x": 620, "y": 450}], "E": 2}]
    }
  }
metadata {
  "Dyad": {
    "experiments": {},
    "tests": {
      "case1": {
        "stop": 3,
        "atol": {"double_acting_cylinder.s": 0.01},
        "expect": {"signals": ["double_acting_cylinder.s"]}
      }
    },
    "labels": [
      {
        "label": "$(instance)",
        "x": 500,
        "y": 1100,
        "rot": 0,
        "layer": "icon",
        "attrs": {}
      }
    ],
    "icons": {"default": "dyad://Dyad/Default.svg"},
    "path": {},
    "doc": {"behavior": true}
  }
}
end

Flattened Source

"""
This test case simulates a Double Acting cylinder with an external mass connected 
to the piston via a flange. The piston starts at the center position, with higher 
initial pressure in the fixed volume on the right side causing the piston to move 
left and stop when it hits the left chamber end. At 1 second, the pressure at the 
left side is increased, causing the piston to move right and stop upon hitting the 
right chamber end. The connected mass follows the piston movement, demonstrating 
the dynamic response of the cylinder and the attached load 
"""
component TestDoubleActingCylinder
  double_acting_cylinder = DoubleActingCylinder(L = 1.0, M = 0.2, area_a = 0.001, area_b = 0.001, s0 = 0.5) {
    "Dyad": {"placement": {"diagram": {"x1": 450, "y1": 400, "x2": 550, "y2": 500}}}
  }
  port_a_side = BoundaryPressure() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 290, "y1": 400, "x2": 190, "y2": 500, "rot": 180}
      },
      "tags": []
    }
  }
  fixed_volume = FixedVolume(p0 = 1e6, vol = 100) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 690, "y1": 420, "x2": 790, "y2": 520, "rot": 0}
      },
      "tags": []
    }
  }
  step = BlockComponents.Step(start_time = 1, height = 2e6) {
    "Dyad": {
      "placement": {
        "diagram": {"x1": 20, "y1": 180, "x2": 120, "y2": 280, "sw": 0.1, "sh": 0.1, "rot": 0}
      }
    }
  }
  mass = TranslationalComponents.Mass(L = 1, m = 0.5) {
    "Dyad": {
      "placement": {
        "diagram": {"x1": 590, "x2": 690, "y1": 620, "y2": 720, "sh": 1, "sw": 1, "rot": 0}
      }
    }
  }
  path medium::AbstractMedium = IsothermalCompressible(bulk_modulus = 1e9, let_gas = false)
relations
  initial double_acting_cylinder.port_a.m_flow = 0.0
  connect(port_a_side.port, double_acting_cylinder.port_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  connect(step.y, port_a_side.p) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 156.5, "y": 230}, {"x": 156.5, "y": 450}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  continuity(medium, fixed_volume.port.medium)
  continuity(medium, port_a_side.port.medium)
  connect(double_acting_cylinder.flange, mass.flange_a) {
    "Dyad": {
      "edges": [{"S": 1, "M": [{"x": 500, "y": 670}], "E": 2}],
      "renderStyle": "standard"
    }
  }
  connect(fixed_volume.port, double_acting_cylinder.port_b) {
    "Dyad": {
      "renderStyle": "standard",
      "edges": [{"S": 1, "M": [{"x": 620, "y": 470}, {"x": 620, "y": 450}], "E": 2}]
    }
  }
metadata {
  "Dyad": {
    "experiments": {},
    "tests": {
      "case1": {
        "stop": 3,
        "atol": {"double_acting_cylinder.s": 0.01},
        "expect": {"signals": ["double_acting_cylinder.s"]}
      }
    },
    "labels": [
      {
        "label": "$(instance)",
        "x": 500,
        "y": 1100,
        "rot": 0,
        "layer": "icon",
        "attrs": {}
      }
    ],
    "icons": {"default": "dyad://Dyad/Default.svg"},
    "path": {},
    "doc": {"behavior": true}
  }
}
end

Test Cases

Test Case case1

plt

Related

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