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Thermalhydraulics Flows with TransAT - Thermal Stripping- Sep. 2014 ASCOMP

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Presentation on theme: "Thermalhydraulics Flows with TransAT - Thermal Stripping- Sep. 2014 ASCOMP"— Presentation transcript:

1 Thermalhydraulics Flows with TransAT - Thermal Stripping- Sep. 2014 ASCOMP www.ascomp.ch lakehal@ascomp.ch

2 LES of Thermal stipping in a T-junction Flow visualization test in the Vattenfall T-junction test facility (Courtesy from Älvkarleby Laboratory, Vattenfall R&D). LDV meas. (Westin et al.) Re = 1.9E5  T= 15 Deg.

3 BFC grid (1.600.000 nodes) LES of Thermal stipping in a T-junction

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5 Time signals results LES of Thermal stipping in a T-junction

6 Time-averaged velocities: LES versus experiment Horizontal profile, L/D=1.6Horizontal profile, L/D=3.6 Vertical profile, L/D=1.6Vertical profile, L/D=3.6 LES of Thermal stipping in a T-junction

7 Reynolds stresses: LES versus experiment Horizontal profile, L/D=1.6Horizontal profile, L/D=3.6 Vertical profile, L/D=1.6Vertical profile, L/D=3.6 LES of Thermal stipping in a T-junction

8 Mean temperatures and RMS temperatures Angle of 0° (Top of the pipe)Angle of 180° (Bottom of the pipe) Angle of 90°Angle of 270° LES of Thermal stipping in a T-junction

9 LES of Thermal stipping in a channel junction Schematic diagram of the test channel Hirota et al. (2010)

10 LES of Thermal stipping in a channel junction Time average velocity profiles at various locations of the horizontal channel (X/B=0, 1 and 2) R.M.S. profiles at various locations of the channel (X/B=0, 1 and 2)

11 Time average and R.M.S. temperature profiles at various locations of the channel (X/B=0, 1 and 2) LES of Thermal stipping in a channel junction


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