Numerical Analysis of Stratified T-Junction Mixing Flows

Cenk Evrim () and Eckart Laurien ()
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Cenk Evrim: University of Stuttgart, Institute of Nuclear Technology and Energy Systems
Eckart Laurien: University of Stuttgart, Institute of Nuclear Technology and Energy Systems

A chapter in High Performance Computing in Science and Engineering '20, 2021, pp 359-372 from Springer

Abstract: Abstract Mixing of coolant streams at high temperature differences in a T-junction frequently cause unexpected fatigue cracking of piping material, this is a challenge for the safe operation of a nuclear power plant. This study compares the T-junction flow mixing in different T-junction configurations of the Fluid-Structure Interaction (FSI) facility at the University of Stuttgart. Warm and cold fluids flow in the main and branch pipes with a temperature difference $$\varDelta $$ Δ T = 180 K between the mixing fluids. Numerical study is conducted using the Large-Eddy Simulation (LES) method. The numerical results are validated with in-house experimental data from the horizontal and vertical T-junction configuration. The stratified T-junction mixing flows are numerically investigated and characterized. Additionally, this paper also contains a close investigation of temperature fluctuations and the influence of the weld seam on the mixing process.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-80602-6_23

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DOI: 10.1007/978-3-030-80602-6_23

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