Numerical Study of Two-Phase Helium II Stratified Channel Flow

Yu, Xiang; Filina, N. N.; Sciver, S.W. Van; Weisend, J. G.; Wolff, S.

doi:10.1007/978-1-4615-4215-5_6

Cited by 8 publications

(3 citation statements)

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“…Changes in the two-phase flow pattern are balanced by the reduced heat loads at decreased operation temperatures as presumed previously [7]. The rigorous two-phase flow model could be used as a design tool, as proposed earlier [5].…”

Section: Discussionmentioning

confidence: 89%

“…The computer code is based on an existing two-phase flow model [5]. As basic assumptions one dimensional steady state flow of both phases, saturation state at any cross section of channel and stratified flow with smooth interface between liquid and vapor phases are considered.…”

Section: Two-phase Flow Model and Computer Codementioning

confidence: 99%

“…The He II two-phase flow was already analyzed for the proposal of the TESLA500 superconducting linac [3,4]. The existing rigorous He II two-phase flow model [5] served as a basis for the present investigations for the XFEL-linac.…”

Section: Introductionmentioning

confidence: 99%

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European Xfel-Linac Two-Phase He Ii Flow Simulations

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et al. 2008

AIP Conference Proceedings

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The superconducting 1.3-GHz niobium cavities of the XFEL linear accelerator will be cooled in a bath of saturated liquid He II at a temperature of 2 K. The liquid He II supply of the 1.7-km long linac is subdivided in sections of about 150 m length. In these sections a two-phase flow of He II liquid and corresponding vapor occurs. A stable stratified smooth helium flow has to be maintained for the RF operation of the cavities, to avoid any vibrations or microphonic effects. A computer code has been developed to simulate the two-phase flow patterns in the XFEL-linac, based on an existing model. The flow characteristics at different cryogenic loads and helium temperatures have been calculated. The results are shown and the consequences for the design of the XFEL-linac cryogenic system are discussed.

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Section: Discussionmentioning

confidence: 89%

Section: Two-phase Flow Model and Computer Codementioning

confidence: 99%