VVER-1000 Coolant Transient Benchmark - OECD Nuclear Energy ...

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LIST OF FIGURES 5.29 Temperature deviations from plant-estimated data at the core inlet – KU-RELAP3D and CEA-TRIO_U results (163 assemblies) .................................................................................................. 5.30 Temperature deviations from plant-estimated data at the core inlet – GRS/KI-ATHLET/BIPR8 82 and CEA-TRIO_U results (95 assemblies) ............................................................................................ 5.31 Temperature deviations from plant-estimated data at the core inlet – GRS/KI-ATHLET/BIPR8 83 and CEA-TRIO_U results (163 assemblies) .......................................................................................... 5.32 Temperature deviations from plant-estimated data at the core inlet – PSU-TRACE and 83 CEA-TRIO_U results (95 assemblies) .................................................................................................... 5.33 Temperature deviations from plant-estimated data at the core inlet – PSU-TRACE and 84 CEA-TRIO_U results (163 assemblies) .................................................................................................. 5.34 Temperature deviations from plant-estimated data at the core inlet – INRNE-CATHARE 84 and CEA-TRIO_U results (95 assemblies) ............................................................................................ 5.35 Temperature deviations from plant-estimated data at the core inlet – INRNE-CATHARE 85 and CEA-TRIO_U results (163 assemblies) .......................................................................................... 5.36 Temperature deviations from plant-estimated data at the core inlet – UNIPI-RELAP3D 85 and CEA-TRIO_U results (95 assemblies) ............................................................................................ 5.37 Temperature deviations from plant-estimated data at the core inlet – UNIPI-RELAP3D 86 and CEA-TRIO_U results (163 assemblies) .......................................................................................... 5.38 Temperature deviations from plant-estimated data at the core inlet – INRNE-CATHARE 86 and BUTE CFX 10 SST results (95 assemblies) .................................................................................... 5.39 Temperature deviations from plant-estimated data at the core inlet – INRNE-CATHARE 87 and BUTE CFX 10 SST results (163 assemblies) .................................................................................. 87 5.40 Assembly-by-assembly core inlet velocities ...................................................................................... 88 5.41 Time history of hot leg 1 temperature ............................................................................................... 89 5.42 Time history of hot leg 2 temperature ............................................................................................... 90 5.43 Time history of hot leg 3 temperature ............................................................................................... 91 5.44 Time history of hot leg 4 temperature ............................................................................................... 92 5.45 Time history of cold leg 1 temperature .............................................................................................. 93 5.46 Time history of cold leg 2 temperature .............................................................................................. 94 5.47 Time history of cold leg 3 temperature .............................................................................................. 95 5.48 Time history of cold leg 4 temperature .............................................................................................. 96 5.49 Time history of mass flow rate in loop 1 ........................................................................................... 97 5.50 Time history of mass flow rate in loop 2 ........................................................................................... 97 5.51 Time history of mass flow rate in loop 3 ........................................................................................... 98 5.52 Time history of mass flow rate in loop 4 ........................................................................................... 98 5.53 Pressure above the core (plant data used by ORNL) ......................................................................... 99 5.54 Time history of SG1 pressure .............................................................................................................. 99 E.1 CEA TRIO_U results – core inlet temperature deviations from plant data .................................... 129 E.2 BUTE CFX 10 SST results – core inlet temperature deviations from plant data ........................... 130 E.3 FZK CFX 5 k-ε results – core inlet temperature deviations from plant data ................................. 131 E.4 UNIPI CFX 10 k-ε results – core inlet temperature deviations from plant data ............................ 132 E.5 EREC REMIX k-ε results – core inlet temperature deviations from plant data .............................. 133 E.6 FZD CFX 10 SST results – core inlet temperature deviations from plant data .............................. 134 E.7 FLUENT k-ω results – core inlet temperature deviations from plant data .................................... 135 F.1 INRNE CATHARE2 – core inlet temperature deviations from plant data ....................................... 137 F.2 GRS/KI ATHLET/BIPR – core inlet temperature deviations from plant data .................................. 138 F.3 UNIPI RELAP5-3D – core inlet temperature deviations from plant data ........................................ 139 F.4 KU RELAP5-3D – core inlet temperature deviations from plant data ............................................. 140 F.5 PSU TRACE – core inlet temperature deviations from plant data................................................... 141 10 V1000CT-2: SUMMARY RESULTS OF EXERCISE 1 ON VESSEL MIXING SIMULATION – © OECD/NEA 2010
List of abbreviations ANS American Nuclear Society BOC Beginning of cycle BPG Best practice guidelines BST Block of shielding tubes CEA Commissariat à l’énergie atomique DES Detached eddy simulation DTC Doppler temperature coefficient EFPD Effective full power days EREC Electrogorsk Research and Experimental Centre FA Fuel assembly FZD Forschung Zentrum Dresden FZK Forschung Zentrum Karlsruhe (Karlsruhe Institute of Technology) GRS Geselschaft für Reaktorsicherheit HP Hot power HZP Hot zero power INRNE Institute for Nuclear Research and Nuclear Energy KI Kurchatov Institute KNPP Kozloduy nuclear power plant KU Kiev University LES Large eddy simulation LWR Light water reactor MCP Main coolant pump MSH Main steam header MSLB Main steam line break NEA Nuclear Energy Agency NRC Nuclear Regulatory Commission OECD Organisation for Economic Co-operation and Development ORNL Oak Ridge National Laboratory PSU Pennsylvania State University PWR Pressurised water reactor RCS Reactor coolant system RPLC Reactor power limitation controller RPC Reactor power controller SG Steam generator SST Shear stress transport TH Thermal-hydraulics UNIPI University of Pisa LIST OF ABBREVIATIONS V1000CT-2: SUMMARY RESULTS OF EXERCISE 1 ON VESSEL MIXING SIMULATION – © OECD/NEA 2010 11
Page 1 and 2: Nuclear Science ISBN 978-92-64-9915
Page 3 and 4: Foreword FOREWORD The Nuclear Energ
Page 5 and 6: Table of contents TABLE OF CONTENTS
Page 7 and 8: List of tables LIST OF TABLES 1.1 L
Page 9: LIST OF FIGURES 4.34 CEA TRIO_U and
Page 14 and 15: INTRODUCTION 1.2 Exercise 2 - Compu
Page 16 and 17: THE INVESTIGATED MIXING PROBLEM •
Page 18 and 19: THE INVESTIGATED MIXING PROBLEM Fig
Page 25 and 26: Chapter 3: Methodology of compariso
Page 27 and 28: Chapter 4: CFD results and discussi
Page 29 and 30: Temperature, K Temperature, K Figur
Page 31 and 32: CFD RESULTS AND DISCUSSION Figure 4
Page 33 and 34: 4.4.3 Radial distributions at the c
Page 35 and 36: Temperature, K Figure 4.4: Downcome
Page 37 and 38: Velocity at 5 800 mm (m/s) Figure 4
Page 41 and 42: Figure 4.10: EREC REMIX results - a
Page 43 and 44: Figure 4.14: FZK CFX 5 results - an
Page 45 and 46: Figure 4.18: BUTE CFX 10 results -
Page 47 and 48: Figure 4.22: Assembly-by-assembly c
Page 49 and 50: Temperature deviations, K Temperatu
Page 59: Velocity, m/s Velocity, m/s Figure
Page 62 and 63:
COARSE MESH RESULTS 5.2 Final state
Page 64 and 65:
COARSE MESH RESULTS Figure 5.53 sho
Page 66 and 67:
CFD RESULTS AND DISCUSSION Table 5.
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COARSE MESH RESULTS Velocity at 5 8
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COARSE MESH RESULTS Figure 5.6: INR
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COARSE MESH RESULTS Figure 5.10: KU
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COARSE MESH RESULTS Figure 5.14: UN
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COARSE MESH RESULTS Figure 5.17: De
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COARSE MESH RESULTS Temperature dev
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COARSE MESH RESULTS Figure 5.40: As
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COARSE MESH RESULTS Temperature, K
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COARSE MESH RESULTS Flow rate, kg/s
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Chapter 6: Summary and conclusions
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References REFERENCES ANSYS (2010a)
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CFX 10 (FZK, FZD, BUTE, UNIPI) Appe
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DESCRIPTION OF CFD CODES millions o
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CATHARE2 (INRNE) Appendix B: Descri
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DESCRIPTION OF SYSTEM CODES The rea
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PARTICIPANT-PROVIDED COMPUTATION DE
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INRNE (CATHARE 2.5) I. Vessel therm
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PSU (TRACE) I. Vessel thermal-hydra
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II. Core thermal-hydraulic model 1.
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DEVIATIONS OF CFD COMPUTED-TO-EXPER
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*89 1.00 *62 2.84 103 0.33 76 2.06
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*89 -0.38 *62 3.46 103 -0.40 76 4.3
Page 141:
*89 -0.98 *62 7.73 103 -0.84 76 8.9
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VVER-1000 Coolant Transient Benchmark - OECD Nuclear Energy ...

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