14th August 20121 E. Da Riva, A.L. Lamure CFD thermal simulations IBL Enrico Da Riva, Anne-Laure Lamure 14th August 2012.

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Presentation transcript:

14th August E. Da Riva, A.L. Lamure CFD thermal simulations IBL Enrico Da Riva, Anne-Laure Lamure 14th August 2012

2 E. Da Riva, A.L. Lamure A. Geometry, materials and boundary conditions 1.Beam Pipe and insulation 2.IBL staves 3.Boundary conditions 4.CFD simulations settings

14th August E. Da Riva, A.L. Lamure 1. Beam Pipe, insulation and IPT

14th August E. Da Riva, A.L. Lamure 2. IBL staves * Assumed as isotropic ** Stycast 2850FT, manufacturer declared value: 1.02 W m -1 K -1 *** Electrolub HTCP, manufacturer declared value: 2.5 W m -1 K -1 -Perfect thermal contact between different layers in the CFD simulations

-40 °C 250°C 17th July 2012E. Da Riva, A.L. Lamure5 Convection 3. Boundary Conditions with : Bake-out case

-40 °C Adiabatic 17th July 2012E. Da Riva, A.L. Lamure6 Convection 3. Boundary Conditions with : Nominal case 100W / stave

14th August E. Da Riva, A.L. Lamure 4. CFD simulations settings -Nitrogen flow rate =0kg/s -Natural convection of nitrogen taken into account -Radiative heat transfer transfer taken into account (emissivity of 0.05 for the Beam Pipe, 1 for other surfaces) -Dependence of nitrogen properties on temperature taken into account -Laminar natural convection flow

14th August E. Da Riva, A.L. Lamure B. CFD Simulations 1.Bake-out case 2.Nominal case 3.Summary table

14th August E. Da Riva, A.L. Lamure 1. Bake-out Insulation : 0mm

14th August E. Da Riva, A.L. Lamure 1. Bake-out Insulation : 2mm

14th August E. Da Riva, A.L. Lamure 1. Bake-out Insulation : 4mm

14th August E. Da Riva, A.L. Lamure 2. Running nominal Insulation : 0mm

14th August E. Da Riva, A.L. Lamure 2. Running nominal Insulation : 2mm

14th August E. Da Riva, A.L. Lamure 2. Running nominal Insulation : 4mm

14th August E. Da Riva, A.L. Lamure 3. Summary table GeometryCaseInsulationTemperature Tsensor maxT IPT max convect mm°C IBL OnlyBake-Out IBL OnlyBake-Out IBL OnlyBake-Out IBL OnlyNominal IBL OnlyNominal IBL OnlyNominal

14th August E. Da Riva, A.L. Lamure C. Comparison with previous results 1.Bake-out case 2.Nominal case

14th August E. Da Riva, A.L. Lamure Summary table

14th August E. Da Riva, A.L. Lamure Thank you for your attention !