HX从构建库获取错误但模拟
I used heat exchanger from Building library and changed the media to MSL media. I am getting the warning as mentioned in the figure. But, It is simulating. Can anyone tell me what the warning represents? How to avoid it
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警告似乎表明您有一个变量,其中名义属性无法评估为文字。
一个琐碎的模型是:
警告表明,由于无法对其忽略属性,就好像没有设置属性一样。
名义 - 归因于变量的缩放(特定状态),并应指示变量的自然尺度 - 如果变量在比例尺上有很大不同,并且可能接近零,则最重要的是最重要的。因此,在这种情况下似乎有些重要。
@Renejustnielsen的答案表明了可能的原因。
The warning seems to indicate that you have a variable where the nominal-attribute cannot be evaluated to a literal.
A trivial model would be:
The warning indicates that since the attribute couldn't be evaluated it is ignored, as if it hadn't been set.
The nominal-attribute is used for scaling of variables (in particular states), and should indicate the natural scale of the variable - and it is most important if the variable varies on scale substantially different from 1 and may be close to zero; so it seems somewhat important in this case.
The answer by @ReneJustNielsen indicates the likely cause.
看起来好像您的模型中有一个组件
volume
,但您尚未为其分配介质模型(空气),而仅保留默认的PartialMedium
It looks as if you have a component
volume
in your model to which you haven't assigned a medium model (air) but only kept the defaultPartialMedium