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In the experiment of reflood heat transfer, the inlet structure of test section has an important effect on flow distribution. The test section mainly consists of three parts: the lower plenum, the middle section and the upper plenum. The middle section contains rod bundle and the flow cladding. The upper and lower plenums simulate the upper and lower plenum of the reactor pressure vessel. In order to accurately simulate the process of the coolant flooding the core uniformly, it is necessary to design a proper flow distributor at the entrance of the test section.
The test section mainly consists of three parts: the lower plenum, the middle section and the upper plenum. The middle section contains rod bundle and the flow cladding. The upper and lower plenums simulate the upper and lower plenum of the reactor pressure vessel. In order to accurately simulate the process of the coolant flooding the core uniformly, it is necessary to design a proper flow distributor at the entrance of the test section.