HTRI 常见错误解释

任务信息 需求描述 任务规则 余额充值

一共2条：
1，The program has failed to converge on a valid solution for the MTD. A temperature pinch may be present in the exchanger. Check the specified or calculated process conditions, physical properties, and heat release curves, and rerun the case after correction.
2，Extrapolation of the physical properties for the cold fluid with respect to pressure resulted in a negative value.  Theprogram reset the calculated negative physical property to 0.00001.  Check the physical properties shown in the Final Results Printout, and rerun the case if necessary.
一般是什么造成的？