Assessment of Different Turbulence Models on the Large Scale Internal Heated Water Pool Natural Convection Simulation
Document Type
Article
Publication Date
3-23-2019
Publication Title
Annals of Nuclear Energy
Volume
131
First page number:
23
Last page number:
38
Abstract
In vessel retention (IVR) is treated as one of the strategies in the severe accident management aspect for the safety of nuclear reactor. The investigation of internal heated melt pool natural convection behavior is important for providing the reference for the IVR strategy. Various researchers conducted internal heated melt pool simulation with focusing on the different aspects and conditions. Based on the previous research, the large scale internal heated melt pool flow behavior located in the turbulence flow region and turbulence models used could affect the simulation result of the internal heated melt pool. Therefore, it is important to conduct the simulation of comprehensive assessment of different turbulence models on the melt pool simulation. In this work, the simulation of large scale internal heated water pool, which is one of the COPRA (COrium Pool Research Apparatus) water tests, is conducted by using ANSYS FLUENT 18.2. The large scale internal heated water pool transient behavior is investigated. The effect of various turbulence models on the internal heated water pool simulation is investigated. This work could provide better understanding of temperature distribution and velocity distribution of large scale internal heated water pool natural convection behavior from the numerical aspect. Based on the current simulation, Realizable k-epsilon turbulence model with the consideration of full buoyancy effects, RNG k-epsilon turbulence model with the consideration of full buoyancy effects, DES (Spalart-Allmaras) turbulence model and DES (SST k-omega) turbulence model are recommended for the simulation of large scale internal heated water pool. This work could bring the benefits for the further study on the numerical investigation of large scale internal heated water pool natural convection behavior.
Keywords
Internal heated water pool; Natural convection; Computational fluid dynamics
Disciplines
Heat Transfer, Combustion | Hydraulic Engineering
Language
English
Repository Citation
Wei, H.,
Chen, Y.
(2019).
Assessment of Different Turbulence Models on the Large Scale Internal Heated Water Pool Natural Convection Simulation.
Annals of Nuclear Energy, 131
23-38.
http://dx.doi.org/10.1016/j.anucene.2019.03.018