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Q: Viscous boundary condition at the singular point in spherical coordinates

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Old   April 14, 2019, 02:42
Question Q: Viscous boundary condition at the singular point in spherical coordinates
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XieQing
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\partial T/\partial t = 1/r^2\partial[r^2\lambda(\partial T/\partial x)]/\partial x

Simple equation as above

How to set the viscous numerical boundary condition at r=0 ?
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Old   April 14, 2019, 03:49
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Quote:
Originally Posted by xq712000 View Post
\partial T/\partial t = 1/r^2\partial[r^2\lambda(\partial T/\partial x)]/\partial x

Simple equation as above

How to set the viscous numerical boundary condition at r=0 ?



If r=0 is a point where you prescribe the BC then there is no equation to solve and no singularity
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boundary condition, spherical coordinate, viscous

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