A MULTISCALE FINITE ELEMENT METHOD FOR OSCILLATING NEUMANN PROBLEM ON ROUGH DOMAIN
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作者:
Ming, Pingbing
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Chinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R ChinaChinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R China
Ming, Pingbing
[1
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Xu, Xianmin
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Chinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS,NCMIS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R ChinaChinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R China
Xu, Xianmin
[2
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机构:
[1] Chinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Univ Chinese Acad Sci, Inst Computat Math & Sci Engn Comp, LSEC,AMSS,NCMIS, 55 Zhong Guan Cun East Rd, Beijing 100190, Peoples R China
We develop a new multiscale finite element method for the Laplace equation with oscillating Neumann boundary conditions on rough boundaries. The key point is the introduction of a new boundary condition that incorporates both the microscopically geometrical and physical information of the rough boundary. Our approach applies to problems posed on a domain with a rough boundary as well as oscillating boundary conditions. We prove the method has a linear convergence rate in the energy norm with a weak resonance term for periodic roughness. Numerical results are reported for both periodic and nonperiodic roughness.
机构:
North Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, RussiaNorth Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia
Alekseev, Valentin
Tang, Qili
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Xiangtan Univ, Sch Math & Computat Sci, Hunan Key Lab Computat & Simulat Sci & Engn, Key Lab Intelligent Comp & Informat Proc,Minist E, Xiangtan 411105, Peoples R ChinaNorth Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia
Tang, Qili
Vasilyeva, Maria
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North Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia
Texas A&M Univ, Inst Sci Computat, College Stn, TX 77843 USANorth Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia
Vasilyeva, Maria
Chung, Eric T.
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Chinese Univ Hong Kong, Dept Math, Shatin, Hong Kong 999077, Peoples R ChinaNorth Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia
Chung, Eric T.
Efendiev, Yalchin
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Texas A&M Univ, Dept Math, College Stn, TX 77843 USANorth Eastern Fed Univ, Multiscale Model Reduct Lab, Yakutsk 677007, Russia