Local Hydrodynamics and Mass-transfer of Coolant in VVER-1000 FA with Mixing Grids
The results of experimental and settlement researches of local mass-transfer and hydrodynamics of coolant in characteristic zones of FA VVER using the belts of mixing grids<<swirling flow round fuel rod>> and<<run row upon row>> are considered. Researches were performed at the aerodynamic stand by a diffusion method of gaseous marker at some scaled experimental models of a segment alternative FA and model of a fragment of a core VVER, including segments of three FA and interassembly space. Experimental models are produced at observance of full geometrical similarity and include fuel rods-simulators, belts of spacer and mixing grids. All experimental researches are performed in a zone of an automodelling current and their results can be used to recount for natural conditions of a current of coolant in a core VVER alternative FA. The results of experimental researches of local hydrodynamics and mass-transfer of coolant in VVER-1000 are received. On the basis of the complex analysis of experimental researches values of an effective coefficients of mass-transfer and dimensionless coefficient of a turbulent transfer for alternative FA with various mixing grids are defined. The received results can be used as a database for verification of programs calculation cell-by-cell of a core VVER with alternative FA and for specification of hydrodynamic characteristics and processes of local mass-transfer in alternative FA with a view of conservatism decrease at numeration heat-engineering reliability of a core VVER with alternative FA.
VVER mass exchange mixing grid
Dmitriev Sergey Borodin Sergey Legchanov Maxim Khrobostov Alexsander Solntsev Dmitry Yuan Ming Li
The Nizhniy Novgorod State Technical University named after R.E.Alekseev Minina str. 24, Nizhni Novg Nuclear Power Institute of China P.O.Box 436, 28 South Third Section, Yihuan Road, Chengdu, China, 6
国际会议
上海
英文
1283-1293
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）