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Recent Applications of RELAP5-3D at GRNSPG. N.Muellner 2011 RELAP5 International User’s Group Seminar And Meeting Salt Lake City, UT, July 25-28, 2011. CONTENTS. Introduction Fast Data Access (HDF5 file format) 3DS Viewer Conclusions. Introduction.

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slide1

Recent Applications of RELAP5-3D at GRNSPG

N.Muellner

2011 RELAP5 International User’s Group Seminar And Meeting

Salt Lake City, UT, July 25-28, 2011

contents
CONTENTS
  • Introduction
  • Fast Data Access (HDF5 file format)
  • 3DS Viewer
  • Conclusions

RELAP5 International User\'s Group Seminar and Meeting, Salt Lake City, UT, July 25-28, 2011

introduction
Introduction
  • CNA2 – Chapter 15 FSAR – one of the main projects of GRNSPG 2007-2010
  • Relap5-3D main tool for analysis
  • Applications (incomplete list)
    • Three different nodalizations for RCS
    • 3D Neutronics
    • Coupling to code modelling I&C
slide4

The Atucha-2 NPP

2 LOOPS

1 MCP, 1 UT SG each

1 PRZ

2160 MWth

1958 + 203 (nom. mod. T), or

2001 + 160 (max mod T)

+

14 from MCP

451 separated FC

slide6

THE BEPU PROCESS

THE POSTULATED INITIATING EVENTS (PIE)

83 NPP

Scenarios

introduction1
Introduction

RELAP5-3D – Calculation of

Temperatures, Pressures,

Mass flows etc

Multiple Timesteps inside

“Control-timestep”

Ovars:

Temperatures

Pressures

Massflows

Ivars:

Valve postions

Pumps on/off

PRZ Heaters

& Spray

DRIVER-PROGRAM

DYNETZ – calculation of

Signals from Control System

introduction2
Introduction
  • Results 2007-2011, apart from FSAR Chapter 15 - data of several TB
  • 2011 Activities –
    • Qualification
    • Consolidate data bases
    • Visualization
fast data access quality control
Fast Data Access & Quality Control
  • Need to organize data
  • HDF5 data format chosen
    • Open format supported by plotting software such as Tecplot
    • User can determine data structure
    • Possibility to save all data which are part of one calculation in one file
  • Controls may be imposed when file is created
fast data access quality control1
Fast Data Access & Quality Control
  • HDF5 ideal for large data sets
    • B-Tree (generalization of a binary search tree)
    • Chunking may be enabled (file sensitive to size of chunks)
    • At the moment, we could reach a maximum time of access of 1s (room for improvement)
  • HDF5 is used by (among others)
    • NASA (climate and geographic data)
    • DOE (Advanced Simulation and Computing Program)
    • Boeing
  • Open libraries available for reading/creating HDF5 files
3d viewer
3D - Viewer
  • Our ProEngineer Technical Drawings of NPP can be exported into .3ds file format (format by Autodesk)
  • 3ds file format can be read by open libraries, and is tuned to be displayed with OpenGL
  • OpenGL visualization
3d viewer1
3D Viewer
  • Putting together
    • Fast data access HDF5
    • Our technical 3D drawings
    • 3ds- OpenGL Libraries
  • 3D Visualization of Relap5-3D results
conclusions
Conclusions
  • Fast data access - HDF5
    • Fast access to large data files
    • Common standard, supported by commercial plotting – packages
    • Possibility to define controls on data set generation
  • 3D Viewer
    • Fast 3D Visualization using existing drawings
    • Use of open libraries, independent from OS
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