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境界条件 - cobalt.cneas.tohoku.ac.jp

B. rotE = . t Maxwell .. D. rotH = J +. t divD = . divB = 0. 2 . S1 n D1. V. D2 n S2.. Maxwell divD = . D ndS = dV. S0 V.. lim D ndS = lim dV. +V 0 S +V 0 V. 0. = lim( D ndS D ndS ) = lim( D1 n D2 n)+S. +V 0 S S2 +V 0. 1. = +S. ( D1 D2 ) n = .. B(x, t ) . rotE( x, t ) = . d t . E dr = dt B dS. C0 S. n E1 t lim E dr = lim d Bn dS = 0. t + S 0 C. 0. + S 0 dt S. = lim( E dr + E dr ) = ( E1 E 2 ) t +A. + S 0 A A2 E2. 1. ( E1 E2 ) t = 0. t . n ( E1 E2 ) = 0.. D1 = 1 E1 , D2 = 2 E2.. 1E1 cos 1 = 2 E2 cos 2 , E1 sin 1 = E2 sin 2. 1. 1. D1 , E1 tan 1 1. =. 2 tan 2 2. D2 , E2 2.. divD(x, t ) = (x, t ) ( D1 D2 ) n = . divB (x, t ) = 0. ( B1 B2 ) n = 0. B (x, t ). rotE(x, t ) = n ( E1 E2 ) = 0. t D(x, t ) n ( H1 H 2 ) = i rotH(x, t ) = + i( x, t ). t

電束密度 Maxwellの方程式 を媒質境界面を含む微小体積に適用 divD =ρ SV 0 ∫∫Dn⋅=dS dVρ これより (電束密度の法線方向成分は連続:表面電荷成分だけ不連続)

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Transcription of 境界条件 - cobalt.cneas.tohoku.ac.jp