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HAL Id: inria-00070176

https://hal.inria.fr/inria-00070176

Submitted on 19 May 2006

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Generalized formulations of Maxwell’s equations for numerical Vlasov-Maxwell simulations

Régine Barthelmé, Patrick Ciarlet, Eric Sonnendrücker

To cite this version:

Régine Barthelmé, Patrick Ciarlet, Eric Sonnendrücker. Generalized formulations of Maxwell’s equa- tions for numerical Vlasov-Maxwell simulations. [Research Report] RR-5850, INRIA. 2006, pp.26.

�inria-00070176�

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ISRN INRIA/RR--5850--FR+ENG

a p p o r t

d e r e c h e r c h e

Thème NUM

Generalized formulations of Maxwell’s equations for numerical Vlasov-Maxwell simulations

Régine Barthelmé — Patrick Ciarlet — Eric Sonnendrücker

N° 5850

Février 2006

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Unité de recherche INRIA Lorraine

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— 6

¶±…±‚[x4t}|Œuh7{

U = ∂ E

∂t − c 2 curl B + c 2 ∇p + 1 0

J .

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∂ U

∂t = ∂ 2 E

∂t 2 − c 2 curl ∂ B

∂t + c 2 ∇ ∂p

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E

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°§†„x4Œ

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t > 0

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V =

"h7{

B = {v ∈ X 0 | div v = 0}, V ρ = {v ∈ X 0 | div v = ρ/ 0 }, V = {g ∈ X 0 0 | hg, vi = 0 ∀v ∈ V }, V = {u ∈ X 0 |(u, v) X = 0 ∀v ∈ V }.

£ hxf‚[v}h[°fv}d4†„vk™[|‰ˆ[h]x†[x>rh7‡‰h7g+h7x>v

ϕ

‚„ª

H 0 1 (Ω)

t¦yZŽdvwd4†v

∆ϕ ∈ L 2 (Ω)

°4‚[x4hd4†[t

∇ϕ ∈ X 0

®x¹†'ŒfŒu|–v}|‰‚[xÀ°svwdfh7{wh"df‚[‡Œftµsr<|‰x>v}h7™'{w†„v}|‰‚[xµ>rœ‹4†„{}vwt

(∇ϕ, v) X = (∇ϕ, v) 0 = 0, ∀ϕ ∈ H 0 1 (Ω)

t]¶v]¶

∆ϕ ∈ L 2 (Ω), v ∈ V.

4!5 “ 6

®xº‚[v}dfh]{¯‚[{ŽŒft]°

∇ϕ

µHh7‡‰‚[xf™>tv}‚

V

¶cd4|‰t‹4{}‚'‹Zh]{¦v(r$¯|‰‡–‡6µZhy4t}h]Œdfh]{}hS†ªèv}h]{]¶

±Â   - ) )(

b

[ )7 ) )

X 0 × L 2 (Ω)

λ∈L inf 2 (Ω) sup

v∈X 0

b(v, λ) kvk X kλk 0

≥ β.

+f £ hxfh7hSŒœvw‚+‹f{}‚ˆ'hkvwd4†vvwdfh7{whh¨u|t(vŽt

β > 0

t¦yZŽdœvwd4†v

∀λ ∈ L 2 (Ω), sup

v∈X 0

b(v, λ) kvk X

≥ βkλk 0

hv

λ ∈ L 2 (Ω)

¶cdfh7{whh7¨s|t¦vwt

ξ ∈ H 0 1 (Ω)

t¦y4ŽdEv}d4†„v

∆ξ = λ

|–x

¶l¹‚'{}h]‚ˆ[h]{]°

kξk 1 ≤ Ckλk 0

¯|–v}d

C > 0

|‰x4Œuh7‹Hh7xZŒuh7x>v1‚„ª

λ

¶cdfh7x

u = ∇ξ

ˆ[h]{}|4h]t

u ∈ L 2 (Ω) 3 , div u = λ ∈ L 2 (Ω), curl u = 0 ∈ L 2 (Ω) 3 , u × n |

Γ = ∇ξ × n |

Γ = 0

†[t

ξ ∈ H 0 1 (Ω).

·kh7x47h

u

µZh]‡–‚'xf™'tvw‚

X 0

¶ <mxœvwdfh‚„vwdfh7{dZ†„x4Œ©°

b(u, λ) = (div u, λ) 0 = kλk 2 0

°f†„x4Œ

kuk 2 X = kuk 2 0 + kdiv uk 2 0

= k∇ξk 2 0 + kλk 2 0

≤ kξ k 2 1 + kλk 2 0

≤ (1 + C 2 )kλk 2 0 .

cd4h7{whª³‚[{wh[°

b(u, λ) kuk X

= kλk 0

kλk 0

kuk X

≥ kλk 0 (1 + C 2 ) −1/2 ,

(17)

5:

†[x4Œt¦‚

sup

v∈X 0

b(v, λ) kvk X

≥ b(u, λ) kuk X

≥ βkλk 0 ,

¯|–v}d

β = (1 + C 2 ) −1/2

|‰x4Œuh]‹Zh]x4Œuh]x'v1‚[ª

λ

ÂsÆ Ÿ  > [- - )) = S

( E 0 , E 1 ) ∈ X 0 (curl ) × X 0 ,

4+5 576

[>

ρ

J

J ∈ C 2 ([0, T ]; H (div , Ω)), ρ ∈ C 2 ([0, T ]; L 2 (Ω)), ( ∂ρ

∂t + div J )(., 0) = 0.

4!5 — 6

%^> Y ^ - ,

( E , P )

)

E ∈ C 0 ([0, T ]; X 0 (curl )) ∩ C 1 ([0, T ]; X 0 ) ∩ C 2 ([0, T ]; H (div , Ω)),

P ∈ C 0 ([0, T ]; L 2 (Ω)).

+f <mxºv}dfh3‚[xfhdZ†„x4Œ©°Zv}d4hµf|‰‡–|‰xfh]†[{1ª³‚'{}g

b

ˆ[h]{}|4h]t1v}dfh¥|–xuªè­®t}yf‹_‚'x4Œu|–v}|‰‚[x¹|‰x¹v}d4h3t}‹4†[7h

X 0 × L 2 (Ω)

¶5cdfh]xÀ°±†'7‚'{wŒf|–xf™_v}‚ h]gXg$†

5 °

B

|‰t+†„x5|‰t}‚[g+‚'{}‹fd4|‰t}g ª³{}‚'g

V

‚[x>v}‚

L 2 (Ω) 0

·kh7x47h§v}dfh]{}hh7¨s|t¦vwt†Xyfxf|~>yfh

E ∈ V

t}y4Ždœvwd4†v

B E = ρ/ 0 .

lE‚[{wh7‚ˆ[h]{]°sŒuyfh§vw‚$|–xfhS~>y4†„‡‰|´v(r

4

|‰|–|

6

|–x h7g+g$†

5

†[x4Œ†[t

ρ ∈ C 2 ([0, T ]; L 2 (Ω))

°

E ∈ C 2 ([0, T ]; V ).

<mx¥v}dfh‚[v}dfh]{ d4†„x4ŒÀ°„‡–h7v

ϕ ∈ H 0 1 (Ω)

µZh†"t¦‚'‡–yfv}|‰‚[xvw‚

∆ϕ = ρ/ 0

¶ 3

]‚'{wŒu|‰xf™kv}‚

4!5

“ 6 °

∇ϕ ∈ V

r<y4xf|‰~>yfh]xfh]twt

4

B

|t1†[x|t¦‚'g+‚[{w‹fdf|t¦g ‚'x

V

6 °

E = ∇ϕ

¶cdf|t|–g+‹f‡‰|‰h]tvwd4†v

A E = 0,

†„x4Œ

E , F

X = E , F

0 = 0

ª³‚[{1†[‡–‡

F ∈ V.

»mh7x4‚„v}hµsr

A V

v}dfh‡‰|‰xfh]†[{‚[‹Hh7{ކv}‚'{Œuh 4x4h]Œµ>r

A V : X 0 → V 0

°

F 7→ A V F

°4t}y4Ždv}d4†„v

hA V F , G i = c 2 (curl F , curl G ) 0 , ∀( F , G ) ∈ X 0 × V.

( E , P )

|t†mt¦‚'‡–yfv}|‰‚[x"v}‚kv}dfhg+|´¨uhSŒ‹f{w‚[µf‡‰h7g 4 6

°„|–v|‰g+‹f‡‰|–hSt6vwd4†v

E

|t9†kt}‚[‡‰yuv}|‰‚[x"vw‚kvwdfhª³‚'‡–‡‰‚¯|–x4™

‹4{}‚'µf‡–h]g){wh]t¦v}{w|‰v}h]Œœv}‚

V

•|‰x4Œ

E ∈ V ρ

t¦yZŽdœvwd4†v

2 E

∂t 2 + A V E = − 1 0

∂ J ˜

∂t

|–x

V 0 .

3 ]‚'{wŒu|‰xf™3v}‚

4!5

“ 6

°uv}df|t‹f{w‚[µ4‡–h]g)|‰thS~>yf|–ˆ†[‡–h]x'vvw‚

•9|–xZŒ

W = E − E ∈ V

t}y4Ždv}d4†„v

2 W

∂t 2 + A V W = − 1 0

∂ ˜ J

∂t

|‰x

V 0 .

4+5 . 6

(18)

puhv¦vw|–x4™

u = W

∂ t W

, A =

0 −I A V 0

, f =

0

−∂ t J / 0

, u 0 =

E 0 − E (., 0) E 1 − ∂ t E (., 0)

,

vwdf|t‹f{w‚[µf‡‰h7g)µHh]7‚[g+h]t

d

dt u + Au = f, u(0) = u 0 .

4+5: 6

®x>vw{}‚uŒuy47h

H = V × H (div 0, Ω)

D(A) = {u ∈ H | Au ∈ H } = V (curl ) × V.

hvy4t1†'Œug+|´vª³‚'{v}dfhg+‚'gXh]x>vvwdfh"ª³‚[‡‰‡‰‚¯|–xf™ h7g+g$†f¶

±Â   - >S

I + A : D(A) → H

[ %') L YS

H

f

3 ]‚[{ŽŒu|‰xf™v}‚_Š1h7g$†„{>1”—u°9¯h<7†„x/†[‹f‹f‡‰rEv}d4hœ·1|‰‡–‡‰h­‚'t}|Œf†¹cdfh7‚'{}h]g

†[twt¦y4gX|‰xf™v}dZ†v

u 0 ∈ D(A)

†[x4Œ

f ∈ C 1 ([0, T ], H)

°‹f{}‚'µf‡‰h7g

4+5: 6

d4†[tœ† yfxf|~'y4hEt¦‚'‡–yuvw|–‚'x

u ∈ C 0 ([0, T ], D(A)) ∩ C 1 ([0, T ], H)

cdfhdsrs‹H‚„v}d4h]t}h]t‚„ªv}dfh·k|–‡‰‡‰h­‚'t}|‰Œf†+cdfh]‚[{wh7g7‚[{w{}hSt¦‹H‚[xZŒ$v}‚

f ∈ C 1 ([0, T ], H) ⇐⇒ ∂ t J ˜ ∈ C 1 ([0, T ], H(div 0, Ω))

cdfh{w|–™'d'v1t}|‰Œfh§d4‚[‡Œft¯dfh7x

J ∈ C 2 ([0, T ]; H(div , Ω))

†„xZŒ

ρ ∈ C 2 ([0, T ]; L 2 (Ω))

u 0 ∈ D(A) ⇐⇒ E 0 − E (., 0) ∈ V (curl )

†„xZŒ

E 1 − ∂ t E (., 0) ∈ V

hS7†„yZt¦h‚[ª©v}dfhmd>rs‹H‚„vwdfh]t}h]t±†„x4Œ$†'t

curl E = 0

°'‚'xfh1d4†'t

E 0 − E (., 0) ∈ X 0 (curl )

¶l¹‚[{wh7‚ˆ'h7{S°

div ( E 0 − E (., 0)) = div E 0 − ρ(., 0)/ 0 = 0,

d4h7x47h

E 0 − E (., 0)

µZh]‡–‚'xf™'tRv}‚

V (curl )

®xXv}d4hkt}†[g+h¯†Kr'°

E 1 −∂ t E (., 0) ∈ X 0

°'†[x4ŒXµZhS7†[y4t¦h

‚[ª

4 6

div ( E 1 − ∂ E

∂t (., 0)) = div E 1 − 1 0

∂ρ

∂t (., 0)

= div (c 2 curl B 0 − J (., 0)/ 0 ) − 1 0

∂ρ

∂t (., 0)

= − 1 0

(div J + ∂ρ

∂t )(., 0) = 0.

·kh7x47h

E 1 − ∂ t E (., 0)

µHh7‡‰‚[xf™>tv}‚

V

cdfh]{}h7ª³‚[{wh[°uvwdfhdsrs‹Z‚[v}dfhSt¦hSt‚„ª v}d4h·1|‰‡–‡‰h­‚'t}|‰Œ4†$cdfh7‚'{}h]g †„{wh†„‡‰‡Àˆ[h]{}|4hSŒ©°4†„xZŒ¯h™'hv1h¨u|t(­

vwh7x47h†„x4Œyfxf|~>yfh7x4h]twt‚„ª

u ∈ C 0 ([0, T ], D(A)) ∩ C 1 ([0, T ], H),

(19)

5

¯d4|‰Žd|‰t1h]~>yf|‰ˆK†[‡–h]x>vvw‚

W ∈ C 0 ([0, T ], V (curl )) ∩ C 1 ([0, T ], V ) ∩ C 2 ([0, T ], H (div 0, Ω)),

y4xf|‰~>yfh¹t}‚[‡‰yuv}|‰‚[x5v}‚

4+5

. 6 ¶ pu|–x47h

X 0 = V ⊕ V

°¯hdZ†Kˆ[hh¨u|‰t¦v}h]x4hº†„xZŒOyfx4|‰~>yfh]xfh]twt+‚„ª§v}dfh t}‚[‡‰yuvw|–‚'x

E

vw‚ 4 6

°4†[]‚[{ŽŒu|‰xf™3v}‚+v}d4ht¦‹f‡‰|–v¦v}|‰xf™

E = W + E ∈ C 0 ([0, T ], X 0 (curl )) ∩ C 1 ([0, T ], X 0 ) ∩ C 2 ([0, T ], H (div , Ω)).

Yv {}h]g+†[|–xZt©v}‚ 4x4Œ

P

h]]†„y4t}h‚[ªfv}dfh|‰xuªè­Yt}yf‹¥7‚[x4Œf|´vw|–‚'x

4

‡‰h7g+g$†

5 6 °

B 0

|t9†„x|t¦‚'g+‚[{w‹fdf|t¦g ª³{w‚[g

L 2 (Ω)

‚[x

V

¶yuv

− 1 0

∂ ˜ J

∂t − ∂ 2 E

∂t 2 − A E = − 1 0

∂ ˜ J

∂t − ∂ 2 W

∂t 2 − A W

! +

− ∂ 2 E

∂t 2 − A E

∈ V .

·kh7x47h§v}dfh]{}hh7¨s|t¦vwt†Xyfxf|~>yfh

P

|‰x

L 2 (Ω)

t¦y4Ždv}dZ†v

B 0 P = − 1 0

∂ J ˜

∂t − ∂ 2 E

∂t 2 − A E ∈ V .

jmt¦|‰xf™+xf‚¯ |–xfhS~>y4†„‡‰|´v(r

4

|‰|

6

‚[ª h7g+g$†

5

°f†„x4Œvwdfh"ªÑ†[vvwd4†v

− ∂ ˜ J

∂t − ∂ 2 E

∂t 2 − A E ∈ C 0 ([0, T ], L 2 (Ω) 3 ),

¯h"‚[µuvކ„|‰xœvwd4†v

P ∈ C 0 ([0, T ]; L 2 (Ω)).

c‚<‚'gX‹4‡–h7v}h§v}dfh‹4{}‚s‚„ª(°u¯h"xfh7hSŒv}‚+‹f{w‚ˆ[h

h7g+g$†

. ¶

+f

8€¬{}‚s‚„ª9‚„ª

h7g+g$†

. ¶;

h7v1y4tt¦d4‚¯Wv}dZ†v

I + A

|‰tg$†„¨s|‰g$†„‡©g+‚[x4‚„v}‚'xfh§‚[x

H

…±‚'x4t}|‰Œuh]{

u ∈ D(A)

((I + A)u, u) H = (u 1 − u 2 , u 1 ) V + (u 2 + A V u 1 , u 2 ) 0,div 0

= Z

|u 1 | 2 + c 2 |curl u 1 | 2 − u 1 · u 2 − c 2 curl u 1 · curl u 2

+ |u 2 | 2 + c 2 curl u 1 · curl u 2

d x

= Z

c 2 |curl u 1 | 2 + |u 1 | 2 + |u 2 | 2 − u 2 · u 1

d x ≥ 0.

·kh7x47h§v}dfh‚'‹Zh]{w†„v}‚[{

I + A

|tgX‚'xf‚„vw‚[xfh'¶

…±‚'x4t}|‰Œuh]{1xf‚¯

f ∈ H

£ h¥‡‰‚s‚ 1œª³‚[{

u ∈ D(A)

t¦yZŽdºv}d4†„v

(2I + A)u = f

°4v}d4†„vm|t7°H¯±h¥‡–‚s‚ 1œª³‚[{

u 1 ∈ V (

7yf{}‡

)

†„xZŒ

u 2 ∈ V

t¦y4Ždv}dZ†v

2u 1 − u 2 = f 1 ∈ V,

2u 2 + A V u 1 = f 2 ∈ H (

Œu|‰ˆ

0, Ω).

(20)

cd4|‰tt}rut(vwh7g|th]~>yf|‰ˆ†„‡‰h7x>vv}‚

u 2 = 2u 1 − f 1

4u 1 + A V u 1 = f 2 + 2f 1 .

cd4h¥µf|‰‡–|‰xfhS†„{mª³‚[{wg

(u 1 , v 1 ) 7→ (4u 1 , v 1 ) 0 + c 2 (curl u 1 , curl v 1 ) 0

|‰t"7‚[x>v}|‰xsyf‚[y4tm†„x4Œ_‚sh7{Ž|‰ˆ[h‚'x

vwdfh‡‰‚'t}h]Œt}yfµ4t}‹4†[7h

V

‚„ª

X 0

f 2 + 2f 1 ∈ H (

Œu|‰ˆ

0, Ω)

Œuh 4xfh]tk†3‡‰|‰xfh]†[{k‚'x'vw|–xsyf‚'y4tª³‚[{wg)‚'x

V

»myfh"vw‚3vwdfh †„¨s­Yl¹|‰‡‰™[{ކ„g)cdfh]‚[{wh7gº°>v}dfh]{}hh7¨s|t¦vwt†Xyfxf|~>yfh

u 1 ∈ V

t}y4Ždœvwd4†v

h4u 1 + A V u 1 , v 1 i V = (f 2 + 2f 1 , v 1 )

ª³‚'{1†„‡‰‡

v 1 ∈ V.

£ h‹f{w‚ˆ[h§xf‚¯Wvwd4†v

c 2 curl curl u 1 = f 2 + 2f 1 − 4u 1

|–xvwdfht¦h]x4t}h§‚[ª9Œu|t¦v}{w|–µfyfv}|‰‚[x4t]¶

hv

ϕ

µHhm†[x>r3ª³yfx4v}|‰‚[x<|‰x

D(Ω)

¶Rcdfh7{wh1h7¨s|t¦vwt¬†yfxf|~'y4h

λ ∈ H 0 1 (Ω)

t}y4Žd+vwd4†v

∆λ = div ϕ

¶¬puhv

ψ = ϕ − ∇λ

¯±h"ˆ[h]{}|–ª³r$h]†'t¦|‰‡‰r3vwd4†v

(∇λ, ψ) ∈ H 0 (curl , Ω) × V

<mxfhmdZ†[t]°uµ>r<Œfh 4xf|–v}|‰‚[x‚„ª

u 1

°

hc 2 curl curl u 1 , ψi V = hA V u 1 , ψi V = (f 2 + 2f 1 − 4u 1 , ψ) 0 .

lE‚[{wh7‚ˆ[h]{

hc 2 curl curl u 1 , ∇λi H 0 (curl ,Ω) = 0.

cd4h7{whª³‚[{wh[°

c 2 curl curl u 1 = f 2 + 2f 1 − 4u 1

ª³‚[‡‰‡–‚¯1t|‰x

D(Ω) 0

†„xZŒt}‚

u 1 ∈ V (curl )

£ hŒfh]Œuy47h<vwdfhh7¨u|‰t¦v}h]x4h<‚[ª

u 2 = 2u 1 − f 1 ∈ V

cdfhœ‚'‹Zh]{w†„v}‚[{

2I + A

|t¥‚'x'vw‚E‚[x

H

°

¯d4h7x47h

I + A

|tg$†¨u|–g$†[‡©gX‚'xf‚„vw‚[xfh"‚'x

H

cdfh|‰xf|–v}|†„‡À‹4{}‚'µf‡–h]g7†[x Zx4†„‡‰‡–rœµZht}‚[‡‰ˆ[hSŒ©¶

ÂsÆ Ÿ Â

-

B 0 ∈ H 0 (div 0, Ω) ∩ H (curl , Ω),

Y - ,[

( E , B , p)

)

E ∈ C 0 ([0, T ], X 0 (curl )) ∩ C 1 ([0, T ], X 0 ) ∩ C 2 ([0, T ], L 2 (Ω) 3 ), B ∈ C 1 ([0, T ], H 0 (div 0, Ω) ∩ H (curl , Ω)) ∩ C 2 ([0, T ], H 0 (div 0, Ω)), p ∈ C 1 ([0, T ], H 0 1 (Ω)).

+f p>vw†[{¦vw|–x4™$ª³{}‚'gvwdfh¯h]† 1t}‚[‡‰yuv}|‰‚[x

( E , P )

‚[µuvކ„|‰xfh]Œª³{w‚[g cdfh7‚'{}h]g¿—u°Z¯hµfyf|‰‡‰Œ

B

†„xZŒ

p

°sv}dfh]xº¯±h‹f{w‚ˆ[hkv}d4†„v

( E , B , p)

|t†+t(vw{}‚'xf™$t¦‚'‡–yuvw|–‚'xœvw‚+‹f{}‚'µf‡‰h7g 4

— 6 ¶

»myfh§v}‚

4’ 6 °

div E = ρ/ 0

|–x

L 2 (Ω)

ª³‚'{†[‡–‡

t

¶cdfh§µH‚[yfx4Œ4†„{wr+7‚[x4Œf|´vw|–‚'x

E × n | Γ = 0

ª³‚[‡‰‡–‚¯1t ª³{w‚[g)v}dfh"ªÑ†'ßvv}dZ†v

E

|t|–xv}d4ht¦‹4†'h

X 0

¶•4‚[{1†„‡‰‡

φ ∈ D(Ω) 3

°f¯h§dZ†Kˆ[h

( ∂ 2 E

∂t 2 + c 2 curl curl E − ∇P, φ) 0 = − 1 0

( ∂ J ˜

∂t , φ) 0 ,

(21)

5

d4h7x47h

∇P = 1 0

∂ ˜ J

∂t + ∂ 2 E

∂t 2 + c 2 curl curl E

|‰x

L 2 (Ω).

£ hŒuhSŒuy4h§vwd4†v

P ∈ C 0 ([0, T ], H 1 (Ω))

¶cdsy4t]°

P | Γ

d4†[t†Xg+h]†[xf|–x4™3|‰x

L 2 (Γ)

¶c‚+‹f{w‚ˆ[hmv}d4†„v1|´v

|t±h]~>y4†„‡4v}‚3¸7h7{w‚4°'‡–h7v±y4t¬vw† 1[hkt}y <|‰h7x>vw‡–r+g$†„xsr3v}h]t¦vª³yfx4ßvw|–‚'x4t]¶–¶‰¶RŠh]]†„‡‰‡fv}dZ†v

|t†‹H‚[‡‰r>d4h]Œu{w‚[xÀ°

t}‚vwd4†v|–vwtµH‚[yfx4Œ4†„{wr$|‰t‚'g+‹Z‚>t¦hSŒ<‚„ª6ªÑ†[hSt

(Γ k ) k

¶cdfh§yfxf|‰‚[x

∪ k D(Γ k )

|tŒuh7x4t}h§|–x

L 2 (Γ)

¶¬pu‚4°

ª³‚'{±†¥™[|‰ˆ[h7x<ªÑ†[h

Γ k 0

°s‡‰hv

λ ∈ D(Γ k 0 )

3 7‚'{wŒf|–xf™v}‚¥€¬{}‚'‹Z‚>t¦|–v}|‰‚[x . ¶—‚„ªb8 5;

°>vwdfh7{whkh7¨s|t¦vwt

v ∈ X 0

t}y4Ždv}d4†„v

v · n |

Γ = λ

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v

†'t†3v}h]t¦vª³yfx4v}|‰‚[xº|‰x 4’ 6

°f¯±h Zx4Œv}d4†„v

0 = Z

Γ

P v · n dΓ = Z

Γ k0

P λ dΓ.

®xº‚[v}dfh]{¯‚[{ŽŒft]°

P | Γ = 0

†„x4Œ

P ∈ C 0 ([0, T ], H 0 1 (Ω))

<mx½v}d4h$‚„v}d4h7{d4†[x4Œ

J ∈ C 2 ([0, T ], H(div , Ω))

°9¯dfh7x47h

ψ ∈ C 2 ([0, T ], H 0 1 (Ω))

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∂p

∂t = 1 c 2 (− 1

0

∂ψ

∂t − P )

†[x4Œœª³{}‚'g

p(., 0) = 0

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p ∈ C 1 ([0, T ], H 0 1 (Ω))

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B

µHh†+t¦‚'‡–yuvw|–‚'xœvw‚

∂ B

∂t = −curl E , B (., 0) = B 0 .

£ h[1sxf‚¯ vwd4†v

curl E ∈ C 0 ([0, T ], H 0 (div 0, Ω) ∩ H (curl , Ω)) ∩ C 1 ([0, T ], H 0 (div 0, Ω))

°4t¦|‰x47h

curl E · n = curl ( E × n ) |Γ = 0.

3 t

B 0 ∈ H 0 (div 0, Ω) ∩ H (curl , Ω)

°>¯h Zx4†„‡‰‡–rX™[h7v

B ∈ C 1 ([0, T ], H 0 (div 0, Ω)∩ H(curl , Ω)) ∩ C 2 ([0, T ], H 0 (div 0, Ω))

w2 ”6 )

B ½- -±9 -7

€¬{}‚'µf‡–h]g

4€ 576

‚'x4t}|‰t¦vwt|‰x 4x4Œu|‰xf™

E , B : Ω × [0, T ] → R 3

†[x4Œ

p : Ω × [0, T ] → R

t¦y4Ždvwd4†v

 

 

 

 

 

∂ E

∂t − c 2 curl B + c 2 ∇p = − 1 0

J

∂ B

∂t + curl E = 0 p + div E = ρ

0

4+5

‘ 6

†[‡–‚'xf™X¯|´vwdvwdfh|‰xf|´vw|‰†[‡6‚'x4Œu|–v}|‰‚[x4t

4‘ 6

†[x4Œ<vwdfhµH‚[yfx4Œ4†„{wrœ‚'x4Œu|–v}|‰‚[x4t

4: 6 ¶

cdfh"g$†„|‰xºŒu|´¼@h7{wh7xZh§¯|´vwdvwdfh"‹f{wh7ˆs|–‚'y4tpsh]v}|‰‚[x

4

h7‡‰‡‰|–‹uvw|‰"7‚[{w{}hSßv}|‰‚[x

6

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{wh7‹4‡‰†'h

p

µsr

ρ/ 0 −div E

°Kv}dfh]{}h|tx4‚kxfh]h]Œª³‚'{R†kg+|–¨shSŒ

4

‚[{ t}†'ŒfŒu‡‰h­Y‹Z‚'|–x>v

6

ª³‚[{wg¥y4‡‰†„v}|‰‚[x|‰x>ˆ'‚[‡‰ˆs|–xf™

µH‚„vwd

E

†„x4Œ

p

¶ €{w‚s‚„ªÑt¯|‰‡–‡©vwdfh7xºµHh"v}hSŽdfxf|7†„‡‰‡‰rœt¦|‰g+‹f‡‰h7{dfh]{}h'¶–¶‰¶

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