5-21 Effects of Turbulent Intermittency on Fluctuation of Thermal Parameters in a Heated Channel

• 作者: Feng Li
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 年，卷（期）: 2016,（1）
• 页码范围: 231-232
• 页数: 2页
• 分类号: O4

摘要

I.Experimental apparatus A schematic diagram of the experimental test loop is shown in Fig.1.The flow circulation starts from the pump,sub-cooled water is pumped through filter and turbine flowmeter into the test section.The heat is provided to the flow using an electrical DC power supply by applying a voltage over the test section.The fluid absorbs heat when passing through the test section,causing an increase in the temperature measured at the exit of the test section.The water then flows to the condenser where it is further sub-cooled in order to complete the circulation,the flow then back to the pump again.A control valve at the inlet of the test section enables the accommodation of flow rate.Flow rate was also adjusted by controlling the motor speed.The experiment was conducted by slowly increasing the flow rate while maintaining the heat flux as constant parameter which was 19.66 kW/m2.The outlet temperature,pressure drop and wall temperature under the same heat flux and different flow rate conditions were measured.