Deflection of pure shear viscous flow around a rigid spherical body

This paper theoretically simulates viscous flow around a rigid spherical body during far-field pure shear deformation, and derives the velocity vector, kinematical parameters such as the rate-of-strain tensor and dynamic parameters such as the differential stress. The results are applied to microstructures around porphyro-blasts and porphyroclasts. They reveal that in the pressure shadow regions pressure is lower, but differential stress is rather higher, and the strain is larger. Thus, this region is not a ‘shadow’ region for deformation.