ProtoDUNE-SP CFD Update Gregory Michna Stephen Gent Dillon - - PowerPoint PPT Presentation

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ProtoDUNE-SP CFD Update Gregory Michna Stephen Gent Dillon - - PowerPoint PPT Presentation

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ProtoDUNE-SP CFD Update Gregory Michna Stephen Gent Dillon Pedersen Weston Christensen Cecilia Streff Department of Mechanical Engineering South Dakota State University July 18, 2019 ProtoDUNE Modeling Overview of Current Work: Fine

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SLIDE 1

ProtoDUNE-SP CFD Update

Department of Mechanical Engineering South Dakota State University

July 18, 2019

Gregory Michna Stephen Gent Dillon Pedersen Weston Christensen Cecilia Streff

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SLIDE 2

ProtoDUNE Modeling

Model Inputs

Surface temperature: 87.59 K Liquid argon inlet temp: 88.16 K = Outlet + 0.2 K Liquid argon height: 7.50 m Liquid argon flow rate: 0.415 kg/s per pipe

July 18, 2019 South Dakota State DUNE CFD Update 2

Overview of Current Work: “Fine tuning” existing CFD model input parameters to best represent actual detector operation

Static Temp Probe Dynamic Temp Probe Outlet

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SLIDE 3

ProtoDUNE Modeling – Work to Date

  • Investigate inlet temperature effects for two cases:

– Inlet = Surface + 0.2 K = 87.793 K – Inlet = Surface + 0.1 K = 87.693 K

  • Investigate flow rate effects:

– Half of original flow rate (0.21 kg/s per pipe)

July 18, 2019 South Dakota State DUNE CFD Update 3

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SLIDE 4

87.664 87.666 87.668 87.67 87.672 87.674 87.676 87.678 87.68 87.682 87.684 1 2 3 4 5 6 7 8

Temperature (K) Height (m)

ST-S-ON 100mK ST-S-PON 200mK ST-S-PON 200mK, 0.21kg/s Experimental 87.655 87.66 87.665 87.67 87.675 87.68 87.685 1 2 3 4 5 6 7 8

Temperature (K) Height (m)

ST-S-PON 100mK ST-S-PON 200mK ST-S-PON 200mK, 0.21kg/s Experimental

Dynamic Probe Static Probe Pumps On Condition Flow Rate (per inlet) Inlet Temperature

0.42 kg/s 87.693 K 0.42 kg/s 87.793 K 0.21 kg/s 87.793 K

ProtoDUNE Modeling

July 18, 2019 South Dakota State DUNE CFD Update 4

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SLIDE 5

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s

Inlet Plane 1 (x = -3.06 m)

Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

July 18, 2019 South Dakota State DUNE CFD Update 5

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SLIDE 6

Inlet Plane 2 (x = -1.02 m)

South Dakota State DUNE CFD Update 6 July 18, 2019

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

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SLIDE 7

Inlet Plane 3 (x = 1.02 m)

South Dakota State DUNE CFD Update 7 July 18, 2019

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

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SLIDE 8

Inlet Plane 4 (x = 3.06 m)

South Dakota State DUNE CFD Update 8 July 18, 2019

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

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SLIDE 9

Valencia Plane (x = 3.414 m)

South Dakota State DUNE CFD Update 9 July 18, 2019

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

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SLIDE 10

Hawaii Plane (x = -1.978 m)

South Dakota State DUNE CFD Update 10 July 18, 2019

Inlet = Surface + 0.1 K = 87.693 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.42 kg/s Inlet = Surface + 0.2 K = 87.793 K 0.21 kg/s

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SLIDE 11

Inlet Temp 87.693 K 87.793 K 20 cm 30 cm 40 cm 50 cm 60 cm Height:

Temperature Contour Plots Along Horizontal Planes

Flow Rate = 0.42 kg/s (per inlet)

11 July 18, 2019 South Dakota State DUNE CFD Update

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SLIDE 12

Inlet Temp = 87.793 K 0.21 kg/s 20 cm 30 cm 40 cm 50 cm 60 cm

Height:

Temperature Contour Plots Along Horizontal Planes

Inlet Flow Rate (per inlet):

0.42 kg/s

12 July 18, 2019 South Dakota State DUNE CFD Update

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SLIDE 13

87.636 87.638 87.64 87.642 87.644 87.646 87.648 87.65 1 2 3 4 5 6 7 8

Temperature (K) Height (m)

ST-S-POFF ST-S-POFF Adiabatic Experimental 87.632 87.634 87.636 87.638 87.64 87.642 87.644 87.646 87.648 1 2 3 4 5 6 7 8

Temperature (K) Height (m)

ST-S-POFF ST-S-POFF Adiabatic Experimental

ProtoDUNE Modeling – Work to Date

  • Revised Pumps Off Simulation

– Adiabatic (not constant temp) pipes = improved dynamic profile from old solution

July 18, 2019 South Dakota State DUNE CFD Update 13

Dynamic Probe Static Probe

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SLIDE 14

ProtoDUNE Modeling – Work in Progress

  • Investigation of local fluid velocities &

bulk flow pattern effects on existing solutions

  • Simulations with correct LAr height

7.406 m (not 7.5 m)

July 18, 2019 South Dakota State DUNE CFD Update 14

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SLIDE 15
  • Increased flow rate simulation (0.63 kg/s per Anselmo)
  • Other Boundary Condition studies as requested

ProtoDUNE Modeling – Future Work

July 18, 2019 South Dakota State DUNE CFD Update 15