用HTRI计算换热器有下面警告内容? the physical properties of the cold fluid have been extrapolated beyond the valid temperature range. check calculated values. warning-bundle entrance velocity exceeds critical velocity, indicating a probability of fluidelastic instability and flow-induced vibration damage. if present, fluidelastic instability can lead to large amplitude vibration and tube damage. warning-shell entrance velocity exceeds critical velocity, indicating a probability of fluidelastic instability and flow-induced vibration damage. if present, fluidelastic instability can lead to large amplitude vibration and tube damage. warning-shell exit velocity exceeds critical velocity, indicating a probability of fluidelastic instability and flow-induced vibration damage. if present, fluidelastic instability can lead to large amplitude vibration and tube damage. the f-stream flow fraction is very high. check the design. 查看更多