Modelica：在范围内找不到类

问题描述

我正在尝试在 OpenModelica 中创建我自己的 GreenEnergy 库。我复制了一个与 Modelica 标准库类似的库结构，但不幸的是收到了下一个错误：

...
[GreenEnergy.Validation.Wall: 5:3-5:312]: Class GreenEnergy.HeatTransfer.Components.Wall not found in scope GreenEnergy.Validation.Wall.
...

我有下一个文件（及其内容）结构：

绿色能源

package.mo

within ;
package GreenEnergy
extends Modelica.Icons.Package;
end GreenEnergy;

传热

package.mo

within GreenEnergy;
package HeatTransfer
extends Modelica.Thermal.HeatTransfer;
end HeatTransfer;

组件

package.mo

within GreenEnergy.HeatTransfer;
package Components
extends Modelica.Thermal.HeatTransfer.Components;
end Components;

Wall.mo

within GreenEnergy.HeatTransfer.Components;

model Wall

import Modelica.Units.SI;
import Modelica.Thermal.HeatTransfer;

parameter SI.Area area = 1 "Wall area";
parameter SI.Length thickness = 0.5 "Thickness of wall";
parameter SI.Density density = 2000 "Wall density";
parameter SI.ThermalConductivity thermal_conductivity = 0.62 
"https://en.wikipedia.org/wiki/Thermal_conductivity";
parameter SI.SpecificHeatCapacity specific_heat_capacity = 800 
"Wall material specific heat capacity";
parameter SI.Temperature initial_temperature = 288.15 "Initial 
temperature of wall";

final constant SI.HeatCapacity heat_capacity = area * thickness * 
density * specific_heat_capacity;
final constant SI.CoefficientOfheatTransfer 
coefficient_of_heat_transfer = thermal_conductivity * thickness;
final constant SI.ThermalConductance thermal_conductance = area * 
coefficient_of_heat_transfer;

HeatTransfer.Components.HeatCapacitor heatCapacitor(C = 
heat_capacity,T(displayUnit = "degC",fixed = true,start = 
initial_temperature)) annotation(Placement(visible = true,transformation(origin = {1,-33},extent = {{-23,-23},{23,23}},rotation = 180)));
HeatTransfer.Components.ThermalConductor thermalConductorOuter(G = 
thermal_conductance / 2) annotation(Placement(visible = true,transformation(origin = {-56,0},extent = {{-18,-18},{18,18}},rotation = 0)));
HeatTransfer.Components.ThermalConductor thermalConductorInner(G = 
thermal_conductance / 2) annotation(Placement(visible = true,transformation(origin = {56,rotation = 0)));
HeatTransfer.Interfaces.HeatPort_a port_a 
annotation(Placement(visible = true,transformation(origin = 
{-100,extent = {{-10,-10},{10,10}},rotation = 0),iconTransformation(origin = {-66,rotation = 0)));
HeatTransfer.Interfaces.HeatPort_b port_b 
annotation(Placement(visible = true,transformation(origin = {100,iconTransformation(origin = {62,rotation = 0)));
HeatTransfer.Celsius.TemperatureSensor temperatureSensor 
annotation(Placement(visible = true,transformation(origin = {58,52},rotation = 0)));
Modelica.Blocks.Interfaces.RealOutput temperature 
annotation(Placement(visible = true,transformation(origin = {106,iconTransformation(origin = {0,-102},rotation = -90)));

equation

connect(thermalConductorOuter.port_b,heatCapacitor.port) 
annotation(Line(points = {{-38,{2,-10}},color = 
{191,smooth = Smooth.Bezier));

connect(thermalConductorInner.port_a,heatCapacitor.port) 
annotation(Line(points = {{38,smooth = Smooth.Bezier));

connect(port_a,thermalConductorOuter.port_a) 
annotation(Line(points = {{-100,{-74,0}},color = {191,0}));

connect(thermalConductorInner.port_b,port_b) 
annotation(Line(points = {{74,{100,0}));

connect(temperatureSensor.port,heatCapacitor.port) 
annotation(Line(points = {{48,smooth = Smooth.Bezier));

connect(temperatureSensor.T,temperature) annotation(Line(points = 
{{68,{106,52}},color = {0,127}));
annotation(Icon(graphics = {Rectangle(origin = {-1.75,-0.54},fillColor = {142,142,142},fillPattern = FillPattern.Backward,extent = {{-63.75,99.46},{63.75,-99.46}}),Text(origin = {-3,83},lineColor = {85,255},extent = {{-59,25},{59,-25}},textString = "%name"),Text(origin = {-15,-83},lineColor = {170,extent = {{-13,21},{13,-21}},textString = "T"),Text(origin = {-34,2},extent = {{-20,12},{20,-12}},textString = "outer"),Text(origin = {29,extent = {{-27,10},{27,textString = "inner"),Text(origin = {-2,57},extent 
= {{-60,19},{60,-19}},textString = "C=%heat_capacity"),Text(origin = {22,33},extent = {{-84,{84,textString = "G=%thermal_conductance")}));

end Wall;

验证

package.mo

within GreenEnergy;
package Validation
extends Modelica.Icons.ExamplesPackage;
end Validation;

Wall.mo

within GreenEnergy.Validation;

model Wall

  extends Modelica.Icons.Example;

  GreenEnergy.HeatTransfer.Components.Wall wall1(area = 1,density(displayUnit = "kg/m3") = 1,initial_temperature = 
   274.15,specific_heat_capacity = 1,thermal_conductivity = 1,thickness 
   = 1)

   annotation(Placement(visible = true,transformation(origin = 
   {0,extent = {{-45,-45},{45,45}},rotation = 0)));

  //Modelica.Thermal.HeatTransfer.sources.FixedTemperature 
  fixedTemperature(T = 283.15)  annotation(
  //Placement(visible = true,transformation(origin = {-76,22},rotation = 0)));

  //Modelica.Thermal.HeatTransfer.sources.FixedTemperature 
  fixedTemperature1(T = 303.15)  annotation(
  //Placement(visible = true,transformation(origin = {68,extent 
  = {{-10,rotation = 180)));

  Modelica.Thermal.HeatTransfer.sources.FixedTemperature 
  fixedTemperature annotation(Placement(visible = true,transformation(origin = {-70,-0},rotation = 0)));

  Modelica.Thermal.HeatTransfer.sources.FixedTemperature 
  fixedTemperature1 annotation(Placement(visible = true,transformation(origin = {70,rotation = -180)));

  equation

  connect(fixedTemperature.port,wall1.port_a) 
  annotation(Line(visible 
  = true,origin = {-44.85,points = {{-15.15,{15.15,0}));

  connect(wall1.port_b,fixedTemperature1.port) 
  annotation(Line(visible = true,origin = {43.95,points = 
  {{-16.05,{16.05,0}));

  end Wall;

然后我正在尝试运行 Validation.Wall 模型... 那么，为什么我会收到在范围内找不到组件的错误消息？

最佳

解决方法

问题出在下一个包代码中：

extends Modelica.Thermal.HeatTransfer;

和

extends Modelica.Thermal.HeatTransfer.Components;

当我用更简单的行替换这些行时：

extends Modelica.Icons.Package;

问题消失了。

Modelica.Thermal.HeatTransfer 包的开头包含这些行：

within Modelica.Thermal;

但是 Modelica.Icons.Package 是通过使用 partial 关键字以不同的方式声明的。有关部分关键字 here 的更多详细信息。

最好的。

lib lib lib modelica openmodelica