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0
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0
1
1
2
1
2
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φ(x, t)
= 0 on Γ
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t
t
n
n
c
x
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z
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|v| =
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R(x)dS
,
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χ(v)dx
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E(φ) = χ(v)H(φ)dx − R(x)|∇φ|δ(φ)dx ,
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φ = −(χ + κR + ∇R · n)|∇φ| ,
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Discontinuity measure
0.9
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