1.

In three dimensional consolidation of sand drain, having radial symmetry, the governing consolidation equation is _______

A. ( frac{ overline{u}}{ t}=C_{vr} ( frac{ overline{u}}{ r^2}+ frac{1}{r} frac{ overline{u}}{ r})-C_{vz} frac{ ^2 overline{u}}{ z^2} )
B. ( frac{ overline{u}}{ t}=C_{vr} ( frac{ overline{u}}{ r^2}+ frac{1}{r} frac{ overline{u}}{ r})+C_{vz} frac{ ^2 overline{u}}{ z^2} )
C. ( frac{ overline{u}}{ t}=C_{vr} ( frac{ overline{u}}{ r^2}- frac{1}{r} frac{ overline{u}}{ r})+C_{vz} frac{ ^2 overline{u}}{ z^2} )
D. ( frac{ overline{u}}{ t}=C_{vz} ( frac{ overline{u}}{ r^2}+ frac{1}{r} frac{ overline{u}}{ r})+C_{vz} frac{ ^2 overline{u}}{ z^2} )
Answer» C. ( frac{ overline{u}}{ t}=C_{vr} ( frac{ overline{u}}{ r^2}- frac{1}{r} frac{ overline{u}}{ r})+C_{vz} frac{ ^2 overline{u}}{ z^2} )


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