compiler-errors - Modelica.Fluid.Valves.Valve损坏的模型无法压缩？接收错误 “Function Utilities.regRoot2 not found in scope ”

Question

我创建了一个基于2个二通阀的三通阀模型，这些模型被声明为可替换模型。这是它的开始...

within SHCLibrary;
model ThreeWayBallValveII

// Import section, AKA nicknames section. To (greately) improve readability.
  import Modelica.Fluid.System;
  import Modelica.Fluid.Interfaces.{FluidPort_a, FluidPort_b};
  import Modelica.Blocks.Sources.Constant;
  import Modelica.Blocks.Math.Add;
  import Modelica.Blocks.Interfaces.RealInput;

// Definition of the fluid to be used in the component.
//  replaceable package Medium = Modelica.Media.Interfaces.PartialMedium;
  replaceable package Medium = Modelica.Media.Water.ConstantPropertyLiquidWater;
// Allows for optional redefinition of junciton and valves model. 
//  replaceable model TeeJunction = Modelica.Fluid.Fittings.BaseClasses.PartialTeeJunction;
  replaceable model TeeJunction = Modelica.Fluid.Fittings.TeeJunctionIdeal;
//  replaceable model Valve = Modelica.Fluid.Valves.BaseClasses.PartialValve;
  replaceable model Valve = Modelica.Fluid.Valves.ValveLinear;
//  replaceable model Valve = Modelica.Fluid.Valves.ValveIncompressible;
//  import Valve = Modelica.Fluid.Valves.ValveIncompressible;

...

我在修改 Valve声明的测试模型中使用了该阀。关键是，如果我使用 LinearValve模型，一切都会顺利进行。

  ThreeWayBallValveII V1(
   redeclare package Medium = Medium,
   redeclare model Valve = Modelica.Fluid.Valves.ValveLinear)
   annotation(
    Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));

相反，如果我使用 ValveIncompressible模型

  ThreeWayBallValveII V1(
   redeclare package Medium = Medium,
//   redeclare model Valve = Modelica.Fluid.Valves.ValveLinear)
   redeclare model Valve = Modelica.Fluid.Valves.ValveIncompressible)
   annotation(
    Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));

我收到此错误:

[1] 12:40:08 Translation Error
[Modelica.Fluid.Valves: 38:9-40:80]: Function Utilities.regRoot2 not found in scope Valve.

我认为可以通过添加这样的行来解决

      import Modelica.Fluid.Utilities;

到 ValveIncompressible包中的 Valves模型，但是对我来说，这之前尚未得到修复似乎很奇怪，我想知道我做错了什么。你怎么看？

真诚的

Answer 1

似乎文件import Modelica.Fluid.Utilities;中需要Modelica 3.2.3/Fluid/Valves.mo。在我的机器上，相关类(class)的开头现在显示为:

within Modelica.Fluid;
package Valves "Components for the regulation and control of fluid flow"
    extends Modelica.Icons.VariantsPackage;

    model ValveIncompressible "Valve for (almost) incompressible fluids"
      extends BaseClasses.PartialValve;
      import Modelica.Fluid.Types.CvTypes;
      import Modelica.Constants.pi;
      import Modelica.Fluid.Utilities;

      constant SI.ReynoldsNumber Re_turbulent = 4000
      "cf. straight pipe for fully open valve -- dp_turbulent increases for closing valve";
      parameter Boolean use_Re = system.use_eps_Re
      "= true, if turbulent region is defined by Re, otherwise by m_flow_small"
        annotation(Dialog(tab="Advanced"), Evaluate=true);
...

进行此修改后，我的模型就可以工作了。