EXPERIMENTAL RESEARCHES OF THE LOCAL HYDRODYNAMIC FLOW OF COOLANT IN THE REACTOR VVER WITH TVSA-12 PLUS

Authors

  • Сергей [Sergey] Михайлович [M.] Дмитриев [Dmitriev]
  • Денис [Denis] Владимирович [V.] Доронков [Doronkov]
  • Максим [Maxim] Александрович [A.] Легчанов [Legchanov]
  • Алексей [Alexey] Николаевич [N.] Пронин [Рronin]
  • Александр [Alexandr] Евгеньевич [E.] Хробостов [Khrobostov]

Keywords:

FA (fuel assembly), spacer and mixing grids, hydrodynamics, heat mass-transfer

Abstract

Results of experimental investigations of local hydrodynamics and intercell mass transfer of coolant flow in a core of WWER with FA-12PLUS have been presented. The aim of work has been consisted in investigating distribution of local hydrodynamic and mass-transfer characteristics of flow in FA behind spacer and mixing grids. Investigations were carried out by the diffusion method (the tracer-gas method) with the help of pneumometric probes. Cells distribution of axial speed components, tracer concentration distribution in experimental model have been received on the base of conducted investigations results. The obtained results allowed to specificate and to visualize coolant flow pattern (picture) behind mixing and spacer grids of FA-12 PLUS. Investigation results have been taken for practical use by Africantov OKBM JSC when assessing heat engineering reliability of cores WWER-1000 with FA-12 PLUS.

Author Biographies

Сергей [Sergey] Михайлович [M.] Дмитриев [Dmitriev]

Science degree: Dr.Sci. (Techn.)
Workplace Nizhny Novgorod State Technical University
Occupation rector

Денис [Denis] Владимирович [V.] Доронков [Doronkov]

Workplace Nizhny Novgorod State Technical University
Occupation ph.D.-student

Максим [Maxim] Александрович [A.] Легчанов [Legchanov]

Science degree: Ph.D. (Techn.)
Workplace Institute of Nuclear Energy and Technical Physics of Nizhny Novgorod State Technical University
Occupation associate professor, deputy director

Алексей [Alexey] Николаевич [N.] Пронин [Рronin]

Workplace Nizhny Novgorod State Technical University
Occupation Ph.D.-student

Александр [Alexandr] Евгеньевич [E.] Хробостов [Khrobostov]

Science degree: Ph.D. (Techn.)
Workplace Nizhny Novgorod State Technical University
Occupation associate professor, director of the Institute of Nuclear Energy and Technical Physics

References

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3. Дмитриев С.М. и др. Экспериментальные исследования гидродинамических и массообменных характеристик потока теплоносителя в ТВСА ВВЭР // Атомная энергия. 2012. Т. 113. Вып. 5. С. 252 — 256.
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Published

2018-12-03

Issue

No. 2 (2016): Выпуск № 2

Section

Power engineering (05.14.00)