Further Modifications to the ARIES T-tube Divertor Concept

Jeremy Burke

ARIES-Pathways Project Meeting

Jan 26, 2011

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Summary of past workDesign modificationsParameter design windowsDetailed CFD analysisDetailed thermo-mechanical analysisArmor analysisNeutron irradiation effects

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Design ModificationsInner cartridge tapered from

10 mm to 2.5 mmArmor thickness varied to

determine effectSlot width varied to find

optimal

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Parameter Design Windows(Stress)

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(Pressure Drop)

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(Temperature)

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Armor Thickness

Compared two values for armor thickness

5 mm and 1 mmDetermine effects of

having more armor5 mm caused a drop in

max heat flux of ~3-5%

Neutron Irradiation

Will reduce thermal conductivity

~5-10%Want to determine how

much this effects max heat flux

Reduction of ~6% with a 10% reduction in thermal conductivity

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Current workFurther Design Modifications

Steel cartridgeFlow diverter in cartridgeDetailed tapper

Inlet/Outlet conditionsPumping power curvesJoint analysis

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Design ModificationsDBTT temp of W ~ 700 CCurrently inlet temp = 600 CModify cartridge and outer

wall design so that all materials are within proper temperature limits

Steel cartridgeFlow diverterNon-linear taper 9

Modified Outer Wall

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Will make joint design much easier

Steel cartridge will connect directly to manifold

Inner walls removedNeed a spacer to

keep cartridge in place

Pumping Power CurvesTested 3 cases of inlet and outlet temperatures600°C inlet – 677°C outlet623°C inlet – 700°C outlet650°C inlet – 700°C outletTapered cartridge450 micron slot1 mm armor

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Pumping Power Fraction vs. Surface Heat Flux

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Corresponding Temperature vs. Surface Heat Flux

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Joint AnalysisWith the modified outer wall and cartridge, designing

a transition joint will be much simplerWill be based on the plate jointTungstenTantalumSteel

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