Question

我写了一个简单的代码来试验在标准库的Fluid包中使用PrescribedPump机器。我正在使用OpenModelica 1.13.2。我想通过使用以10000为常数的恒定值驱动的规定的泵将水从一个水箱抽到另一个水。

代码在这里：

model PompaPilotata

  package Medium = Modelica.Media.Water.ConstantPropertyLiquidWater;

  inner Modelica.Fluid.System system ;
  Modelica.Fluid.Vessels.OpenTank bacinella1(redeclare package Medium = Medium,
    T_ambient = system.T_ambient, T_start = system.T_ambient, crossArea = 4, energyDynamics = Modelica.Fluid.Types.Dynamics.FixedInitial,
    height = 10, level_start = 2, massDynamics = Modelica.Fluid.Types.Dynamics.FixedInitial, nPorts = 1, p_ambient = system.p_ambient,
    use_HeatTransfer = false, use_T_start = true, use_portsData = false)  ;

  Modelica.Fluid.Vessels.OpenTank bacinella2(redeclare package Medium = Medium,
    T_ambient = system.T_ambient, T_start = system.T_ambient, crossArea = 4, energyDynamics = Modelica.Fluid.Types.Dynamics.FixedInitial,
    height = 10, level_start = 2, massDynamics = Modelica.Fluid.Types.Dynamics.FixedInitial, nPorts = 1, p_ambient = system.p_ambient,
    use_HeatTransfer = false, use_T_start = true, use_portsData = false)  ;

  Modelica.Fluid.Machines.PrescribedPump Pompa(redeclare package Medium = Medium,
    medium(h(stateSelect = StateSelect.default), p(stateSelect = StateSelect.default)),N_nominal = 100, V = 0.1, allowFlowReversal = false,
    checkValve = true, energyDynamics = Modelica.Fluid.Types.Dynamics.DynamicFreeInitial, m_flow_start = 0.0000001,
    massDynamics = Modelica.Fluid.Types.Dynamics.DynamicFreeInitial, nParallel = 1, use_HeatTransfer = false, use_N_in = true) ;

  Modelica.Blocks.Sources.Constant Costante(k = 10000);

  Modelica.Fluid.Pipes.StaticPipe tubo1(redeclare package Medium = Medium,allowFlowReversal = true,
    diameter = 0.1, height_ab = 0, isCircular = true, length = 5, nParallel = 1) ;

  Modelica.Fluid.Pipes.StaticPipe tubo2(redeclare package Medium = Medium,allowFlowReversal = true,
    diameter = 0.1, height_ab = 0, isCircular = true, length = 5, nParallel = 1);

equation
  connect(tubo2.port_b, bacinella2.ports[1]);
  connect(Pompa.port_b, tubo2.port_a);
  connect(tubo1.port_b, Pompa.port_a);
  connect(bacinella1.ports[1], tubo1.port_a);
  connect(Costante.y, Pompa.N_in);
end PompaPilotata;

我从编译器收到此错误消息：

在C：/OpenModelica1.13.264bit/include/omc/c/util/modelica_string.h：38：0包含的文件中，来自C：/OpenModelica1.13.264bit/include/omc/c/openmodelica_func.h：52，来自PompaPilotata_model.h：6，来自PompaPilotata_06inz.c：2： PompaPilotata_06inz.c：在函数'PompaPilotata_eqFunction_237'中： C：/OpenModelica1.13.264bit/include/omc/c/meta/meta_modelica_data.h：231：21：错误：'omc_Modelica_Fluid_Machines_PrescribedPump $ Pompa_flowCharacteristic'参数2的类型不兼容 #define mmc_mk_real mmc_mk_rcon ^ C：/OpenModelica1.13.264bit/include/omc/c/meta/meta_modelica_data.h：225：45：注意：在宏“ mmc_unbox_real”的定义中 #define mmc_unbox_real（X）mmc_prim_get_real（X） ^ PompaPilotata_06inz.c：3005：139：注意：在宏'mmc_mk_real'的扩展中数据-> simulationInfo-> realParameter [7] = mmc_unbox_real（omc_Modelica_Fluid_Machines_PrescribedPump $ Pompa_flowCharacteristic（threadData，mmc_mk_real（data-> simulationInfo-> realParameter [5]）））; ^ 在PompaPilotata_model.h：23：0包含的文件中，来自PompaPilotata_06inz.c：2： PompaPilotata_functions.h：223：15：注意：预期为'modelica_real {aka double}'，但参数的类型为'void *' modelica_real omc_Modelica_Fluid_Machines_PrescribedPump $ Pompa_flowCharacteristic（threadData_t threadData，modelica_real _V_flow）; ^ ：目标“ PompaPilotata_06inz.o”的配方失败 \ tools \ msys \ mingw64 \ bin \ mingw32-make： [PompaPilotata_06inz.o]错误1 \ tools \ msys \ mingw64 \ bin \ mingw32-make：* 等待未完成的作业。编译过程失败。退出，代码为2。

有人可以向我解释这是什么意思，以及如何解决？谢谢

Answer 1

该模型不适用于Dymola高度，但它提供以下提示：

Function Pompa.flowCharacteristic_Unique7 is neither external nor has an algorithm. It should have been redeclared.

因此，重新声明flowCharacteristic函数应该有所帮助。从Modelica.Fluid.Examples.PumpingSystem复制这部分并将V_flow_nominal的值减少1000倍（这是一个疯狂的猜测），得出：

  Modelica.Fluid.Machines.PrescribedPump Pompa(redeclare package Medium = Medium,
    redeclare function flowCharacteristic = Modelica.Fluid.Machines.BaseClasses.PumpCharacteristics.quadraticFlow (V_flow_nominal={0.001,0.0025,0.005}, head_nominal={100,60,0}),
    medium(h(stateSelect = StateSelect.default), p(stateSelect = StateSelect.default)),N_nominal = 100, V = 0.1, allowFlowReversal = false,
    checkValve = true, energyDynamics = Modelica.Fluid.Types.Dynamics.DynamicFreeInitial, m_flow_start = 0.0000001,
    massDynamics = Modelica.Fluid.Types.Dynamics.DynamicFreeInitial, nParallel = 1, use_HeatTransfer = false, use_N_in = true);

第二行实际上已添加。

openmodelica中流体库的奇怪问题

1 个答案: