Transient numerical investigation of direct vessel injection for AP1000 under pressurized thermal shock
Creators
- 1. Nuclear Power Institute of China, Chengdu (China)
- 2. School of Nuclear Science and Technology, University of South China, Hengyang (China)
Description
The transient temperature and the transient mixing characteristics of RPV downcomer in AP1000 under four kinds of operation condition (CMT Hot Functional Test, CMT Injection and ADS, CMT Recirc with ACC/IRWST Injection and Normal RHR Operation) has been investigated using the computational fluid dynamics (CFD) method combined with the conjugate heat transfer computing method. Results show that the coolant mixed strongly at the intersection of DVI-Nozzle and the inner wall surface of RPV under each operating condition. The coolant from the cold leg decide how the distribution of fluid temperature in downcomer of RPV changed. And three typical location of DVI-Nozzle experience a large step change in temperature under each operation condition. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Power Engineering
- Journal Volume
- 36
- Journal Issue
- 1
- Journal Page Range
- p. 1-8
- ISSN
- 0258-0926
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 48083713
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- AFTER-HEAT REMOVAL; COMPUTERIZED SIMULATION; FLUID MECHANICS; HEAT TRANSFER; HIGH PRESSURE COOLANT INJECTION; MIXING; NOZZLES; NUCLEAR POWER PLANTS; PRESSURE VESSELS; PWR TYPE REACTORS; SURFACES; THERMAL SHOCK; TRANSIENTS; WALLS
- Descriptors DEC
- CONTAINERS; ECCS; ENERGY TRANSFER; ENGINEERED SAFETY SYSTEMS; ENRICHED URANIUM REACTORS; MECHANICS; NUCLEAR FACILITIES; POWER PLANTS; POWER REACTORS; REACTOR PROTECTION SYSTEMS; REACTORS; REMOVAL; SIMULATION; THERMAL POWER PLANTS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 9 figs., 1 tab., 8 refs.