8th High Power Targetry Workshop (HPTW2023)

Large Eddy Simulations of the cooling channels of ISIS Target Station 2

10 Nov 2023, 09:30

15m

Administrative Headquarters 2F conference room (RIKEN Wako campus)

Contributed Oral Topic4-3

Speaker

Dr Gregory Cartland-Glover (Scientific Computing, Science and Technology Facilities Council, UK Research and Innovation)

Description

We present recent work on the simulation of the turbulence occurring in the cooling channels and the influence of pulsed heating on conjugate heat transfer in Target Station 2 of the ISIS Neutron and Muon Source, which is a water cooled tantalum-clad tungsten target. The simulations performed explore the potential for the influence of thermal fatigue arising from turbulent fluctuations in the cooling channels, as well as pulsed heating from the proton beam on the lifetime of the target. Five case studies of heat transfer modelling are:

1. Conjugate heat transfer of TS2 with Large Eddy Simulation (LES), where steady state heating was applied
2. Conjugate heat transfer of TS2 with Reynolds averaged Navier-Stokes (RANS) turbulence modelling of pulsed heating
3. LES of an untapered version of the cooling channel nearest to the nose of the target
4. LES of pulsed heating applied to the walls of the cooling channel nearest to the nose of the target
5. LES of conjugate heat transfer in a straight channel.

The turbulence models applied are the Smagorinsky form of LES and the elliptical blending Reynolds stress model (EBRSM) for the RANS calculations.

Initial progress on the modelling of thermal stresses within target materials will also be presented.

Presentation materials

Slides-CartlandGlover_Session4-3_HPTW2023_20231110.pptx