Article ID Journal Published Year Pages File Type
1507704 Cryogenics 2013 10 Pages PDF
Abstract

Thermohydraulic studies based on porous medium analogy, pertinent to dual channel Cable-in-Conduit Conductors (CICCs) used in International Thermonuclear Experimental Reactor (ITER), are explored in the present work. Dual channel CICC used in Toroidal Field (TF) Coil consists of a circular jacket in which superconducting cable bundles are placed in the annular channel separated from the central channel by a spiral. The cable bundle in the annular channel can be considered as saturated porous medium and the central channel can be viewed as clear region for thermohydraulic studies. In the present work, a 3D Computational Fluid Dynamics (CFD) analysis is performed on CICC by considering dual channel CICC as partially filled saturated porous medium. The 3D geometry was developed and meshed in GAMBIT-2.1.6, and exported to a commercial solver FLUENT -6.3.26 for further analysis. The effect of mass flow rate ( 6 - 10 g/s) of supercritical helium (SHe) on the velocity and pressure gradient distributions (axial and radial) in the transverse plane is presented. These studies resulted in estimating the mass flow repartition between the two channels and pumping power required to pump the SHe in CICC. In addition, the present CFD analysis brings a clear perspective of the phenomena of flow and heat transfer in complex geometries such as CICC.

► Three dimensional CFD analysis of CICC is done with porous medium approach. ► Pressure gradients (axial and radial) are calculated at various locations of CICC. ► Velocity distribution on longitudinal and transverse cross sections is plotted. ► Temperature distribution on the longitudinal cross section of CICC is plotted. ► Mass flow repartition between the bundle and central channel of CICC is calculated.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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