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定常非对称流动方程的最小二乘Petrov-Galerkin有限元方法(英文)
四川大学学报. 自然科学版, 2003 证明了定常非对称流动方程变分格式解的存在唯一性,并建立了其G/L S稳定化有限元格式,证明了有限元离散解对任意有限元空间组合是稳定的,并给出有限元解的收敛性和误差估计.
陈瑞阁, 冯民富
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Precise and controllable laser wavelength modulation over a broad spectral range in nanoscale devices is pivotal for advancing next‐generation optoelectronic technologies. Herein, we synthesized high‐quality CsPbBr3 nanowires (NWs) via the anti‐solvent method and constructed a CsPbBr3/SiO2/Ag hybrid structure, demonstrating both photonic and ...
Yizun Zhou +10 more
wiley +1 more source
, 2009 有限元法在岩土工程中的应用越来越广泛。随着问题规模的增大,对有限元的计算能力要求越来越高。岩土有限元计算形成的方程组的系数矩阵具有大型稀疏对称的特点。针对系数矩阵的特点,采用稀疏压缩存储的方式,可以大大节省内存,使在普通的PC机上求解大规模有限元问题成为可能 ...
吴梦喜, 余进
core
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In this work, In2O3 and three rare earth (RE)‐doped In2O3 composites (Ho, Yb, and Sm‐doped) were prepared via the hydrothermal method. Compared with In2O3 sensors, those fabricated from the three composite materials (RE–In2O3) exhibit varying degrees of enhanced response toward ethylene glycol (EG) gas. At 35% relative humidity (RH) and 250°C,
Chang Liu +9 more
wiley +1 more source
四川大学学报. 自然科学版, 2013 Darcy-Stokes方程的统一有限元方法是研究Darcy-Stokes耦合问题的基础.尽管该方法采用等阶或低阶有限元逼近在工程计算上有较大的实际应用价值,但这类有限元组合不满足inf-sup条件,因而会造成数值求解的困难.而非协调有限元更容易满足离散的inf-sup条件,因而在计算耦合问题时比协调有限元更具吸引力.本文对Darcy-Stokes方程提出了一种等阶线性非协调稳定化有限元方法,证明了该格式是稳定的,并得到了最优误差估计.
刘程熙, 孔花, 钟纯真
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Electromagnetic interference (EMI) shielding materials with low reflectivity are ideal materials for addressing the pollution caused by electromagnetic radiation. Ti3C2Tx MXene is widely used for EMI shielding due to its excellent conductivity.
Guirong Hu +6 more
wiley +1 more source
Gaoya dianqi, 2001 本文将两种高阶有限单元 （高阶亚参有限单元和高阶等参有限单元 ）结合在一起 ,研究了一种适用于高压电器电场计算的耦合有限元方法 ...
刘念 +4 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The surging demand for high‐performance NdFeB magnets has made it essential to achieve ultrahigh coercivity while minimizing the consumption of heavy rare earths. To tackle this challenge, this study proposes a Dy/Tb bilayer grain boundary diffusion strategy and systematically investigates the co‐diffusion behavior of Dy and Tb.
Rui Chang +7 more
wiley +1 more source