Abstract
In this study, a porous body three-dimensional thermal-hydraulic code, THYC, has been used to implement a refined model of the influence of mixing grids in a single-phase flow. Two effects are taken into account simultaneously: (1) turbulent diffusive effects treated by a partial differential equation describing production, transport, diffusion and dissipation of turbulent energy; (2) convective effects due to mixing vanes or other devices which promote cross-flow velocities. These effects are treated by a non-diagonal flow resistance tensor. The model has been applied to simulate a tracer injection experiment in a 81-rod bundle (HYDROMEL) with two grid locations. This calculation demonstrates the model`s overall capabilities and its independence of grid location. Results obtained with an air-flow mock-up (EDGAR) are also mentioned.
Citation Formats
Banner, D, Briere, E, and Olive, J.
Modelling spacer grids convective and diffusive effects in LWR fuel assemblies with the three dimensional thermal-hydraulics code THYC.
France: N. p.,
1992.
Web.
Banner, D, Briere, E, & Olive, J.
Modelling spacer grids convective and diffusive effects in LWR fuel assemblies with the three dimensional thermal-hydraulics code THYC.
France.
Banner, D, Briere, E, and Olive, J.
1992.
"Modelling spacer grids convective and diffusive effects in LWR fuel assemblies with the three dimensional thermal-hydraulics code THYC."
France.
@misc{etde_10129641,
title = {Modelling spacer grids convective and diffusive effects in LWR fuel assemblies with the three dimensional thermal-hydraulics code THYC}
author = {Banner, D, Briere, E, and Olive, J}
abstractNote = {In this study, a porous body three-dimensional thermal-hydraulic code, THYC, has been used to implement a refined model of the influence of mixing grids in a single-phase flow. Two effects are taken into account simultaneously: (1) turbulent diffusive effects treated by a partial differential equation describing production, transport, diffusion and dissipation of turbulent energy; (2) convective effects due to mixing vanes or other devices which promote cross-flow velocities. These effects are treated by a non-diagonal flow resistance tensor. The model has been applied to simulate a tracer injection experiment in a 81-rod bundle (HYDROMEL) with two grid locations. This calculation demonstrates the model`s overall capabilities and its independence of grid location. Results obtained with an air-flow mock-up (EDGAR) are also mentioned.}
place = {France}
year = {1992}
month = {Oct}
}
title = {Modelling spacer grids convective and diffusive effects in LWR fuel assemblies with the three dimensional thermal-hydraulics code THYC}
author = {Banner, D, Briere, E, and Olive, J}
abstractNote = {In this study, a porous body three-dimensional thermal-hydraulic code, THYC, has been used to implement a refined model of the influence of mixing grids in a single-phase flow. Two effects are taken into account simultaneously: (1) turbulent diffusive effects treated by a partial differential equation describing production, transport, diffusion and dissipation of turbulent energy; (2) convective effects due to mixing vanes or other devices which promote cross-flow velocities. These effects are treated by a non-diagonal flow resistance tensor. The model has been applied to simulate a tracer injection experiment in a 81-rod bundle (HYDROMEL) with two grid locations. This calculation demonstrates the model`s overall capabilities and its independence of grid location. Results obtained with an air-flow mock-up (EDGAR) are also mentioned.}
place = {France}
year = {1992}
month = {Oct}
}