Helium cooling systems for Indian LLCB TBM testing in ITER

Yadav, Brijesh; Gandhi, A.; Verma, Ashima; Sandeep, K.T.; Chaudhari, V.; Kumar, E. Rajendra

doi:10.1016/j.fusengdes.2017.05.097

Cited by 9 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…as a purge gas to extract tritium from the breeder by flowing through the pebbles. Liquid PbLi circulates around the canister as a coolant with an average temperature (T ∞ ) of 613 K. The temperature-dependent thermophysical properties of Li 2 TiO 3 pebble bed, IN-RAFMS, and helium are given in refs 13,35 The scaling analysis is further extended to thermal energy storage (TES) systems filled with monosized rock pebbles. 36,37 The experimental setup of Meier et al 38 is considered for this study.…”

Section: Problem Definitionmentioning

confidence: 99%

“…Liquid PbLi circulates around the canister as a coolant with an average temperature ( T ∞ ) of 613 K . The temperature-dependent thermophysical properties of Li 2 TiO 3 pebble bed, IN-RAFMS, and helium are given in refs , …”

Section: Problem Definitionmentioning

confidence: 99%

“…However, due to computational resource constraints, many of these investigations have focused on scaled-down geometries. − For instance, Akhalesh et al studied LLCB TBM flow characteristics using CFD-DEM on a 1:20 scaled model, while Bhuyan et al determined the magnetohydrodynamics (MHD) pressure drop for a scaled model of LLCB-TBM using a potential-based method. In our prior work, we conducted parametric analyses on scaled-down breeder blanket models. ,, Experimental studies on laboratory-scale blanket modules have also been significant. − Satyamurthy et al conducted laboratory-scale experiments on a NaK test section of the Lead Lithium Ceramic Breeder TBM, comparing results with numerical simulations. Swami et al validated the neutronic design of the TBM shield module through experiments on a small-scale module.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of Scaling Laws for Fluid Flow and Heat Transfer Analysis of Packed Beds Filled with Monosized Pebbles

Kumar,

Saha,

Sharma

2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This study uses the porous medium approach to develop the scaling law for investigating fluid flow and heat transfer behavior of different scaled cuboid and cylindrical packed beds filled with monosized pebbles. Dimensionless flow and thermal similarity parameters are derived from the nondimensional forms of the Navier−Stokes equation with Darcy-Forchheimer terms and the local thermal nonequilibrium (LTNE) energy equations for adiabatic and convective heat loss boundary conditions at the sidewalls. A library is developed to improve the accuracy of numerical solvers in the open-source OpenFOAM software to account for local variations in the porosity of packed beds. Leveraging the library, both unsteady and steady-state numerical models are constructed using OpenFOAM. These models are used to investigate the impact of scaling on flow and temperature distributions in packed beds for a range of heat generation rates and mass flow conditions. The scale analysis results reveal consistent nondimensional pressure drops and dimensionless outlet temperature for the scaled prototypes at different Reynolds numbers and nondimensional heat generation rates. Further, it is found that the scaling law effectively maintains the consistency in uniformity in flow characteristics and heat transfer for various scaled prototypes. The applicability of transient and steady-state scaling parameters is elucidated by considering two prominent applications in fusion reactors and thermal energy storage systems. Using the scaling law, the pressure drop of a scaled-down packed pebble bed reactor reported in the literature is predicted and compared with the VDI (Verein Deutscher Ingenieure) heat atlas correlation, demonstrating its broader applicability in engineering and industrial applications.

show abstract