Numerical Study of Liquid Metal Turbulent Heat Transfer in Cross-Flow Tube Banks

Heavy liquid metals (HLM) are attractive coolants for nuclear fission and fusion applications due to their excellent thermal properties. In these reactors, a high coolant flow rate must be processed in compact heat exchangers, as such, it may convenient have the HLM flowing on shell side of helical coil steam generator. Technical knowledge about turbulent transfer cross-flow tube bundles is rather limited, this paper aims investigate suitability Reynolds Average Navier–Stokes (RANS) models simulation problem. Staggered in-line finite considered (a=1.25), medium (a=1.45), wide (a=1.65) pitch ratios. The lead bismuth eutectic alloy with Pr=2.21×10−2 working fluid. A 2D computational domain used relying k−ω Shear Stress Transport (SST) momentum flux Prt concept prediction. effect uniform spatially varying assumptions has been investigated. For bundle, unsteady SST/Prt=0.85 found significantly underpredict integral regard theory, featuring good acceptable agreement Pe≥1150. staggered bank, steady SST best modeling strategy bundles. poor observed all considered.