断言已违反 Pipe/ClosedVolume

Question

我在 OpenModelica 上做了一个模型，简单地将固定体积源与恒压源连接起来。但是，我收到错误并且无法设置它。你能帮我吗，我是这个软件的新手？谢谢你的帮助，艾玛

 Modelica.Fluid.Vessels.ClosedVolume volume(redeclare package Medium = Modelica.Media.IdealGases.SingleGases.N2, V = 6e-4, nPorts = 1, p_start = 40e5, use_portsData = false) annotation(
    Placement(visible = true, transformation(origin = {-174, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 90)));
  inner Modelica.Fluid.System system annotation(
    Placement(visible = true, transformation(origin = {-170, 150}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  Modelica.Fluid.Sources.Boundary_pT boundary1(redeclare package Medium = Modelica.Media.IdealGases.SingleGases.N2, nPorts = 1, p = 100000) annotation(
    Placement(visible = true, transformation(origin = {154, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 180)));
  Modelica.Fluid.Pipes.StaticPipe pipe(redeclare package Medium = Modelica.Media.Air.SimpleAir, diameter = 8e-3, length = 351.4e-3, nParallel = 1) annotation(
    Placement(visible = true, transformation(origin = {-72, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  CurvedBendModel curvedBendModel(redeclare package Medium = Modelica.Media.Air.SimpleAir, geometry = Geometry(d_hyd = 8e-3, R_0 = 25.5e-3, delta = 90)) annotation(
    Placement(visible = true, transformation(origin = {-2, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  Modelica.Fluid.Pipes.StaticPipe pipe1(redeclare package Medium = Modelica.Media.Air.SimpleAir, diameter = 8e-3, length = 166e-3, nParallel = 1) annotation(
    Placement(visible = true, transformation(origin = {76, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
equation
  connect(volume.ports[1], pipe.port_a) annotation(
    Line(points = {{-164, 0}, {-82, 0}}, color = {0, 127, 255}));
  connect(pipe.port_b, curvedBendModel.port_a) annotation(
    Line(points = {{-62, 0}, {-12, 0}}, color = {0, 127, 255}));
  connect(curvedBendModel.port_b, pipe1.port_a) annotation(
    Line(points = {{8, 0}, {66, 0}}, color = {0, 127, 255}));
  connect(pipe1.port_b, boundary1.ports[1]) annotation(
    Line(points = {{86, 0}, {144, 0}}, color = {0, 127, 255}));
protected
  annotation(enter image description here

我调整了现有“CurvedBend”组件的代码（因为我无法让它工作）。这就解释了为什么它对你来说不存在。

model CurvedBendModel
 extends Modelica.Fluid.Dissipation.Utilities.Icons.PressureLoss.Bend_i;
  extends Modelica.Fluid.Interfaces.PartialPressureLoss;
  
  parameter Geometry geometry
    "Geometry of curved bend"
      annotation (Placement(transformation(extent={{-20,0},{0,20}})));

protected
  parameter Medium.AbsolutePressure dp_small(min=0)=
              Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_DP(
               Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_con(
                   d_hyd=geometry.d_hyd,
                   delta=geometry.delta,
                   K=geometry.K,
                   R_0=geometry.R_0),
                Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_var(
                  rho=Medium.density(state_dp_small),
                  eta=Medium.dynamicViscosity(state_dp_small)),
                m_flow_small)
    "Default small pressure drop for regularization of laminar and zero flow (calculated from m_flow_small)";

equation
  if allowFlowReversal then
     m_flow =  Modelica.Fluid.Fittings.BaseClasses.Bends.CurvedBend.massFlowRate(
                dp, geometry, d_a, d_b, eta_a, eta_b, dp_small, m_flow_small);
  else
     m_flow = Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_MFLOW(
               Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_con(
                   d_hyd=geometry.d_hyd,
                   delta=geometry.delta,
                   K=geometry.K,
                   R_0=geometry.R_0),
  Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_var(rho=d_a, eta=eta_a), dp);
  end if;
end CurvedBendModel;

Answer 1

啊，是的，对不起。我调整了现有“CurvedBend”组件的代码（因为我无法让它工作）。这就解释了为什么它对你来说不存在。

model CurvedBendModel
 extends Modelica.Fluid.Dissipation.Utilities.Icons.PressureLoss.Bend_i;
  extends Modelica.Fluid.Interfaces.PartialPressureLoss;
  
  parameter Geometry geometry
    "Geometry of curved bend"
      annotation (Placement(transformation(extent={{-20,0},{0,20}})));

protected
  parameter Medium.AbsolutePressure dp_small(min=0)=
              Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_DP(
               Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_con(
                   d_hyd=geometry.d_hyd,
                   delta=geometry.delta,
                   K=geometry.K,
                   R_0=geometry.R_0),
                Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_var(
                  rho=Medium.density(state_dp_small),
                  eta=Medium.dynamicViscosity(state_dp_small)),
                m_flow_small)
    "Default small pressure drop for regularization of laminar and zero flow (calculated from m_flow_small)";

equation
  if allowFlowReversal then
     m_flow =  Modelica.Fluid.Fittings.BaseClasses.Bends.CurvedBend.massFlowRate(
                dp, geometry, d_a, d_b, eta_a, eta_b, dp_small, m_flow_small);
  else
     m_flow = Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_MFLOW(
               Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_con(
                   d_hyd=geometry.d_hyd,
                   delta=geometry.delta,
                   K=geometry.K,
                   R_0=geometry.R_0),
                Modelica.Fluid.Dissipation.PressureLoss.Bend.dp_curvedOverall_IN_var(rho=d_a, eta=eta_a), dp);
  end if;
end CurvedBendModel;