埋地管道关阀水锤数值模拟及结构响应流固耦合分析

以典型的管道关阀水锤为研究对象,通过多种计算流体力学软件进行数值模拟,探索最优的水锤现象模拟方法,并进一步分析管道内流场在关阀水锤中的变化情况。同时,通过流固耦合方法,分析管道结构对水锤波的响应特性。结果表明：Fluent的控制边界法和模拟关阀法均能较好地模拟关阀水锤特性,同时得到详细的内流场特性;水锤压力波会引起管道剧烈振动,并且使管道结构的应力最大值明显增大,显著加剧管道破坏的风险。     

红外热像技术在运动病研究中的应用

应用红外热图像技术，观察了６０名健康男性青年在平行秋千刺激下，诱发运动病引起的面色苍白前后，面部体表温度的变化，结果提示：红外热图技术对定量评价由运动病引起的面苍白程度有一定的应用价值。     

HPR20PLUS在线气体分析质谱仪低压测试性能观察

To obtain data for experiments and applications of HPR20^PLUS on-line mass spectrometer in low pressure. The gas, standard gas, and breath gas of low pressure cabin were analyzed respectively in unman and manned experiments under different low pressure. The accuracy and stability of HPR20^PLUS On-line Mass Spectrometer in unman experiments under different low pressure were conformed to the requirements of HPR20^PLUS on-line mass spectrometer, and the changes of breath gas in manned experiments were accorded with the laws of human experiments . Performance tests of HPR20^PLUS on-line mass spectrometer in low pressure is excellent , and HPR20 ^PLUS on-line mass spectrometer can be used for human experiments under low pressure .