American Nuclear Society

Home / Publications / Journals / Fusion Science and Technology / Volume 44 / Number 1

Thermal Fluid Finite Element Calculations for the European PPCS Divertor Concepts

Panos J. Karditsas, Neill P. Taylor

Fusion Science and Technology / Volume 44 / Number 1 / July 2003 / Pages 227-231

Technical Paper / Fusion Energy - Divertor and Plasma-Facing Components /

As part of the European Power Plant Conceptual Study, two different divertor designs were proposed, based on previous work on HETS (High Efficiency Thermal Shield) performed at FZK and ENEA. The coolant is helium gas at pressures in the range 10-14 MPa and the inlet temperatures are in the range of 500-800°C. The geometrical complexity of the designs made prediction of heat transfer coefficients, needed for conducting thermal and structural analysis, difficult, and the calculated values from empirical correlations uncertain. This paper presents and summarises results of thermal-fluid calculations performed on both divertor concepts and gives estimates of effective values of heat transfer coefficients based on the local flow conditions and temperature distributions. The agreement of calculations with experimental values for similar conditions, inspires confidence in results from such calculations, and demonstrates that computational fluid dynamic finite element codes can accurately predict behaviour, and can be used to optimise the designs.

Questions or comments about the site? Contact the ANS Webmaster.