1. EUROTRANS WP1.5, May 22-23, 2007 HEAT TRANSFER TO LIQUID METAL: DATA AND CORRELATIONS FOR TUBE BUNDLES Konstantin MIKITYUK Laboratory for Reactor Physics and Systems Behaviour

2. EUROTRANS WP1.5, May 22-23, 2007 Outline Liquid metal / tube bundle data review Liquid metal / tube bundle correlation review Analysis of correlation quality for predicting the data Application of the correlations to ELSY conditions Recommendation and conclusion

3. EUROTRANS WP1.5, May 22-23, 2007 Test data

4. EUROTRANS WP1.5, May 22-23, 2007 Test data: Nusselt vs Pe

5. EUROTRANS WP1.5, May 22-23, 2007 Test data: Nusselt vs x

6. EUROTRANS WP1.5, May 22-23, 2007 Correlations

7. EUROTRANS WP1.5, May 22-23, 2007 Nu measured versus Nu calculated

8. EUROTRANS WP1.5, May 22-23, 2007 Nu measured versus Nu calculated

9. EUROTRANS WP1.5, May 22-23, 2007 Nu measured versus Nu calculated

10. EUROTRANS WP1.5, May 22-23, 2007 Nu measured versus Nu calculated

11. EUROTRANS WP1.5, May 22-23, 2007 Absolute error for each data point Mean absolute error Standard deviation Root-mean-square error Analysis of quality of correlations

12. EUROTRANS WP1.5, May 22-23, 2007 Analysis of quality of correlations

13. EUROTRANS WP1.5, May 22-23, 2007 TRAC analysis of correlations in ELSY conditions

14. EUROTRANS WP1.5, May 22-23, 2007 Conclusions Only tube bundle data considered No “dirty” fluid data considered: Influence of oxide layer  direct simulation Not enough data to see  /  difference Gräber correlation recommended