NUCLEAR TECHNIQUES, Volume. 48, Issue 6, 060601(2025)
Influence of helical geometry on flow and heat transfer characteristics of helical tri-lobe fuel
Fig. 2. Grid division for the fluid region of the helical tri-lobe fuel assemblies
Fig. 3. Secondary flow vector diagrams at heights of z=240 mm and z=280 mm (color online)
Fig. 4. Influence of helical pitch on pressure drop (a), JABS (b) and heat transfer coefficient (c)
Fig. 5. Wall temperature distribution of HTF with different helical pitches at z=360 mm (color online)
Fig. 6. Temperature contours at different axial positions for various helical pitches (color online)
Fig. 7. Velocity field contours in cross-sections with different lobe gap distances (color online)
Fig. 8. Temperature field contours with different lobe gap distances (color online)
Fig. 9. Wall temperature distribution of central HTF with different lobe gap distances (color online)
Fig. 10. Influence of lobe gap distances on pressure drop (a) and heat transfer coefficient (b)
Fig. 12. Influence of R2/R1 on pressure drop (a), fuel loading (b), and heat transfer coefficient (c)
Fig. 13. Wall temperature distribution of central HTF with different R2/R1 (color online)
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Siyu DIAO, Yanan ZHAO, Tao YU. Influence of helical geometry on flow and heat transfer characteristics of helical tri-lobe fuel[J]. NUCLEAR TECHNIQUES, 2025, 48(6): 060601
Category: NUCLEAR ENERGY SCIENCE AND ENGINEERING
Received: Aug. 9, 2024
Accepted: --
Published Online: Jul. 25, 2025
The Author Email: Yanan ZHAO (赵亚楠)