Non-uniform heating method, test method and test device for flow stability test

• Main Authors: HU YOUSEN, JIN DESHENG, CHENG YI, GAO YAXIN, ZHENG XIONG, RUAN TIANMING, MAO YULONG, ZHANG WEI, CHEN JUN, HU YISONG
• Format: Patent
• Language: Chinese; English
• Published: 15.08.2023
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention relates to a non-uniform heating method for a flow stability test, a test method and a test device. The non-uniform heating method for the flow stability test comprises the following steps: acquiring an axial power distribution curve of a pipe fitting under a preset operation condition; and the pipe fitting is divided into a plurality of working sections, the preset temperature of the corresponding working sections is obtained according to the axial power distribution curve, and the temperature of each working section is adjusted to the corresponding preset temperature. Segmented heating is performed on the pipe fitting through the axial power distribution curve under the preset operation condition, so that the heat exchange process of water and water inside and outside the heat transfer pipe is simulated, the influence of the length of the pipe fitting on the heat exchange process of water is reduced, the heat exchange process of water and water is simulated more accurately, and the heat exchan