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region in the stacks. Key words: thermoacoustic engine; phase difference; numerical simulation; field synergy 热声热机以其可靠性高,使用寿命长,绿色环保等特点,成为近年来制冷及低温领域的研究热点.经过最近二三十年的快速发展,热声技术的研究已经取得了许多成果[1-4].但要更进一步地提高声...: The synergy model was established and the computational fluid dynamics (CFD) method was used to conduct the two-dimensional numerical simulation on the 1/4 wavelength standing wave thermoacoustic......
the latent heat while melting, and releases the latent heat while solidifying. One method of dealing with phase transition is to adopt the enthalpy method, just define the material’s enthalpy which... Simulation on temperature field of TIG welding of copper without preheating LEI Yu-cheng(雷玉成), YU Wen-xia(郁雯霞), LI Cai-hui(李彩辉), CHENG Xiao-nong(程晓农) School of Materials Science and Engineering......
Trans. Nonferrous Met. Soc. China 28(2018) 290-297 Phase field method simulation of faceted dendrite growth with arbitrary symmetries Zhi CHEN1, Pei CHEN1, He-he GONG2, Pei-pei DUAN1, Li-mei HAO3, Ke... to be effective, and it can be generalized to arbitrary crystal symmetries. Key words: phase field method; strong anisotropy; faceted dendrite; Wulff theory; tip velocity; symmetry 1 Introduction......
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. The phase composition of the film was characterized by X-ray diffractometry(XRD), and the microstructure was observed by scanning electronic microscopy(SEM). Through the film annealed in magnetic field... with that in the film annealed with magnetic field. And the effect of magnetic field annealing on the microstructure of Fe/Pt film and the segregation of FCC FePt phase were also discussed. Key words: L10-FePt......
understanding on thermomagnetic convection under magnetic quadrupole field utilizing the lattice Boltzmann method. Present problem was examined under non-gravitational and gravitational conditions for a wide... a positive role in heat transfer under weak magnetic field while a negative one for magnetic force numbers larger than 1×105. Key words: lattice Boltzmann method; thermomagnetic convection; magnetic......
capacity; rough foundation; slip-line field theory; upper bound limit analysis theorem; slip failure mechanism; nonlinear programming method...Construction of improved rigid blocks failure mechanism for ultimate bearing capacity calculation based on slip-line field theoryZHAO Lian-heng(赵炼恒), YANG Feng(杨峰)(School of Civil Engineering......
: Kirkendall void; binary alloy; phase field crystal method; growth exponent; deformation 1 Introduction Kirkendall voids exist widely in solders, films and nanometer materials. Notably...Trans. Nonferrous Met. Soc. China 27(2017) 599-607 Morphological evolution and growth kinetics of Kirkendall voids in binary alloy system during deformation process-Phase field crystal simulation......
; Abstract: Based on Thomas-Fermi model, the interior potential boundary condition with the effect of electric field was defined, the calculation method of free energy for atom cluster under... boundary strengthening [J]. Rare Metal Materials and Engineering, 2001, 30(5): 331-334. (in Chinese) [5] KOCH C C. Experimental evidence for magnetic or electric field effects on phase transformations......
J. Cent. South Univ. (2020) 27: 752-761 DOI: https://doi.org/10.1007/s11771-020-4328-8 Phase change materials as quenching media for heat treatment of 42CrMo4 steels Milad SAKKAKI1, Farhad SADEGH... and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: In the present work, paraffin phase change material is used as quenchant for the heat treatment of 42CrMo4 alloy and compared......