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Heat Simulations with COMSOL. Jeff Gronberg / LLNL June 26, 2007. This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.
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Heat Simulations with COMSOL Jeff Gronberg / LLNL June 26, 2007 This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.
Time evolution of heat distribution in beryllium • Gaussian distribution, sigma=1cm • Temperature • Peak 1000 C • Default 300 C
Beryllium parameters • COMSOL has a material model library • Parameters run with T during computation • They match standard values at T=300 K • Can be set to constants if desired
The relaxation timescale is in seconds • This result would argue that the conductive heat transport timescale is much longer than the bunch structure timescale
Next step • Attempt to replicate the ANL results for the post-target window • Due to an e-mail crash I need to get a copy of their talk • Comsol can model moving material • Simulate heat transport in the liquid metal target