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CERN Document Server Sök i 41 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 1.12 sekunder. 
1.
Experimental study of three-phase helium mixtures in confined channels / Vitrano, Andrea (CERN ; IRFU, Saclay, DACM) ; Stepanov, Vadim (IRFU, Saclay, DACM) ; Authelet, Gilles (IRFU, Saclay, DACM) ; Baudouy, Bertrand (IRFU, Saclay, DACM)
An experimental campaign was conducted to investigate heat and mass transfer phenomena in superfluid helium (He II) in two rectangular cross-section channels of high aspect ratios and different thickness resembling the space between steel collars in the LHC superconducting magnets. The experiments consisted of clamped heat flux tests at atmospheric pressure, in which a heater strip suddenly releases a constant heat load into the channel that is open to a helium bath on one side. [...]
2023 - 11 p. - Published in : Cryogenics 135 (2023) 103741 Fulltext: PDF;
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2.
Double phase transition numerical modeling of superfluid helium for fixed non-uniform grids / Vitrano, Andrea (U. Paris-Saclay ; CERN) ; Baudouy, Bertrand (U. Paris-Saclay)
A thermo-fluid dynamic numerical model for the simulation of the first-order and second-order phase transitions in superfluid helium (He II) is presented. The model is based on a Finite Volume Method algorithm for transient multidimensional problems [...]
2022 - 16 p. - Published in : Comput. Phys. Commun. 273 (2022) 108275 Fulltext: PDF;
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3.
Superfluid helium forced flow in the Gorter-Mellink regime / Vitrano, Andrea (CERN ; U. Paris-Saclay) ; Baudouy, Bertrand (U. Paris-Saclay)
A dimensional study of the momentum equations of superfluid helium is presented together with a parametric analysis of newly derived dimensionless numbers. The study is performed with a focus on the role of forced flows in the Gorter-Mellink regime. [...]
2023 - 5 p. - Published in : Cryogenics 129 (2023) 103628 Fulltext: PDF;
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4.
Chapter 2: High-field magnets / Védrine, P (Saclay) ; García-Tabarés, L (Madrid, CIEMAT) ; Auchmann, B (PSI, Villigen) ; Ballarino, A (CERN) ; Baudouy, B (Saclay) ; Bottura, L (CERN) ; Fazilleau, P (Saclay) ; Noe, M (KIT, Karlsruhe) ; Prestemon, S (LBNL, Berkeley) ; Rochepault, E (Saclay) et al.
High-field magnets (HFM) are among the key technologies that will enable the search for new physics at the energy frontier. Approved projects (HL-LHC) and potential future circular machines such as proton-proton Future Circular Collider (FCC-hh) and Super proton-proton Collider (SppC) require the development of superconducting (SC) magnets that produce fields beyond those attained in the LHC.The programme proposed here rests on the results achieved over the past twenty years of European and international programmes devoted to Nb$_{3}$Sn and HTS accelerator magnets, such as CARE, EuCARD, EuCARD2, ARIES and the recently launched I-FAST. [...]
2022 - 51 p. Fulltext: PDF;
In : European Strategy for Particle Physics - Accelerator R&D Roadmap, pp.9-59
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5.
Millisecond Time-Scale Measurements of Heat Transfer to an Open Bath of He II / Blomberg Ghini, Jonas (Norwegian U. Sci. Tech. ; CERN) ; Auchmann, Bernhard (CERN) ; Baudouy, Bertrand (IRFU, Saclay)
We explore steady state and transient heat transfer from a narrow, rectangular stainless steel heater strip cooled from one side by an open bath of He~II. [...]
arXiv:2203.04626. - 2022. - 19 p.
Fulltext
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6.
Millisecond Time-Scale Measurements of Heat Transfer to Confined He II / Blomberg Ghini, Jonas (Norwegian U. Sci. Tech. ; CERN) ; Auchmann, Bernhard (CERN) ; Baudouy, Bertrand (IRFU, Saclay)
We explore transient heat transfer, on the millisecond time-scale, from a narrow, rectangular stainless steel heater cooled from one side by He II confined to a channel of 120 $\mu$m depth. [...]
arXiv:2203.04701. - 2022. - 21 p.
Fulltext
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7.
CERN Yellow Report Front Cover European Strategy for Particle Physics - Accelerator R&D Roadmap / Adolphsen, C. ; Mounet, N. (ed.)
The 2020 update of the European Strategy for Particle Physics emphasised the importance of an intensified and well-coordinated programme of accelerator R&D, supporting the design and delivery of future particle accelerators in a timely, affordable and sustainable way [...]
arXiv:2201.07895 ; CERN-2022-001 - 2022-03-17 - 270. (CERN Yellow Reports: Monographs ; 1/2022)


10.23731/CYRM-2022-001
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8.
Numerical Investigation of Thermal Counterflow of He II Past Cylinders / Soulaine, Cyprien (Stanford U. ; Institut de Mécanique des Fluides de Toulouse, France) ; Quintard, Michel (Institut de Mécanique des Fluides de Toulouse, France) ; Baudouy, Bertrand (Saclay) ; Van Weelderen, Rob (CERN)
We investigate numerically, for the first time, the thermal counterflow of superfluid helium past a cylinder by solving with a finite volume method the complete so-called two-fluid model. In agreement with existing experimental results, we obtain symmetrical eddies both up- and downstream of the obstacle. [...]
2017 - 5 p. - Published in : Phys. Rev. Lett. 118 (2017) 074506 Fulltext: PDF; External link: Fulltext
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9.
A PISO-like algorithm to simulate superfluid helium flow with the two-fluid model / Soulaine, Cyprien (Toulouse III U. (main)) ; Quintard, Michel (Toulouse III U. (main ; IFMT, Toulouse) ; Allain, Hervé (CERN) ; Baudouy, Bertrand (IRFU, Saclay) ; Van Weelderen, Rob (CERN)
This paper presents a segregated algorithm to solve numerically the superfluid helium (He II) equations using the two-fluid model. In order to validate the resulting code and illustrate its potential, different simulations have been performed. [...]
2015 - Published in : Comput. Phys. Commun. 187 (2015) 20-28 Fulltext: PDF;
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10.
Development and Coil Fabrication Test of the $Nb_3Sn$ Dipole Magnet FRESCA2 / Manil, P (Saclay) ; Baudouy, B (Saclay) ; Clement, S (CERN) ; Devaux, M (Saclay) ; Durante, M (Saclay) ; Fazilleau, P (Saclay) ; Ferracin, P (CERN) ; Fessia, P (CERN) ; Munoz Garcia, J E (CERN) ; Garcia, L (CERN) et al.
The key objective of the High Field Magnet work package of the European Project EuCARD is to design and fabricate the Nb$_{3}$Sn dipole magnet FRESCA2. It has an aperture of 100 mm and a target bore field of 13 T. [...]
2014 - Published in : IEEE Trans. Appl. Supercond. 24 (2014) 4001705
In : 23rd International Conference on Magnet Technology, Boston, MA, USA, 14 - 19 Jul 2013, pp.4001705
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