一 维控制与执行计算出现问题(GT-ISE)

yfzhangf

各位老大：
      计算过程中出现的问题：(附件带模型)

*WARN:Temp out of range for: Oil-15W40-123-16cSt  T =  500.033
    Step :  494249 Part = controlin-in1-1
    Properties were evaluated at T =  500.
    Suppressing additional warnings of this type for this timestep.

*WARN:Temp out of range for: Oil-15W40-123-16cSt  T =  507.415
    Step :  494250 Part = controlin-in1-1
    Properties were evaluated at T =  500.
    Suppressing additional warnings of this type for this timestep.
*FAIL:One of the following liquid properties is negative:
      cp           =  -484.524 J/kg-K
      rho          =  1027.2 kg/m^3
      d(rho)/dP    =  0.16456E-01 kg/m^3-bar
      pressure     =  8865.54 bar
      temperature  =  501.766 K
      Decreasing the Time Step Multiplier may help
Occurs in a: FlowSplit, istep= 494250 Part = controlin-in1-1

The error above is typically caused by extremely low/high pressures or very
large mass flow rates. To diagnose, open GT-POST and check plots of flow rate,
pressure, and temperature in the component and its nearby parts. If plots are
not available due to the failure, please change the Plot Range in Plot Setup
to "Entire Run" and re-run the model. This will save results until just
before the failure.

In circuits with fluid-mechanical interaction where volumes are changing,
this may be caused by volumes going to zero. This might indicate a problem in
the initial volume of the flow part or the maximum displacement of the
attached mass. In some cases this error may be related to instability,
which may be resolved by decreasing the time step multiplier.

Possible causes are:
1) Incorrect unit on some input data
2) Severely mis-matched initial conditions

mizhongquan

关于您提供的GT-ISE计算过程中出现的控制与执行问题：计算时显示油类属性的温度值超出了预设范围（Oil-15W40-123-16cSt），具体为T = 500033。这种情况发生在控制模块（Part = controlin-in1-1）的某个时间点（Step : 494249）。尽管此模块会自动忽略这类额外警告，但为了预防可能出现的长期影响或性能问题，建议立刻对该时间点的输入数据和预设值进行检查与对比。建议增加传感器验证其提供的温度信号准确性，并进行相应的参数调整或模型修正。