A MULTISCALE FINITE ELEMENT METHOD FOR OSCILLATING NEUMANN PROBLEM ON ROUGH DOMAIN
被引:4
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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:
Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 637371, SingaporeNanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 637371, Singapore
Xia, Bingxing
Hoang, Viet Ha
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Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 637371, SingaporeNanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore 637371, Singapore