htri计算有下面的问题，怎么解决啊？

672805090 · 发表于 2014-6-17 13:43:26

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Runtime Messages

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Released to the following HTRI Member Company:

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Xist E Ver. 5.00 2014-6-17 13:18 SN: Friendsl

SI Units

GCP2014-006-001

Rating - Horizontal Multipass Flow TEMA BEM Shell With Single-Segmental Baffles

Unit ID 100 - WARNING MESSAGES (CALCULATIONS CONTINUE)

The vapor specific heat of the hot fluid is calculated in the area of the critical temperature. The

linear interpolation of the vapor specific heat and the sensible heat duty may be inaccurate in this

region. Specify the vapor specific heat and/or the heat release curve for this case.

The physical properties of the hot fluid have been extrapolated beyond the valid temperature range.

Check calculated values.

WARNING-Crossflow velocity exceeds critical velocity, indicating probability of fluidelastic instability

and flow-induced vibration damage. If present, fluidelastic instability can lead to large amplitude

vibration and tube damage.

WARNING-Crossflow velocity at baffle tip 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.

NOTE-Tube vibration from vortex shedding is possible. Check the crossflow-induced vibration

amplitude on Line 27 of the Vibration Analysis report for an asterisk. If no asterisk prints, probability

of tube damage is low.

NOTE-Tube vibration from turbulent buffeting is possible.

Bundle entrance velocity exceeds 80% of critical velocity, indicating that fluidelastic instability and

flow-induced vibration damage are possible. 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.

Bundle exit velocity exceeds 80% of critical velocity, indicating that fluidelastic instability and

flow-induced vibration damage are possible. 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.

WARNING-Shell entrance rho-v-squared exceeds TEMA maximum recommended value of 5950

kg/m s2 (4000 lb/ft sec2).

WARNING-Shell exit rho-v-squared exceeds TEMA maximum recommended value of 5950 kg/m s2

(4000 lb/ft sec2).

Xvib can be used for a more detailed analysis of individual tubes in the bundle.

The inlet unsupported span length (inlet baffle spacing + central baffle spacing) exceeds the TEMA

maximum unsupported span length.

The central unsupported span length (twice the central baffle spacing) exceeds the TEMA maximum