SEARCH Articles Figures Tables Flow models Herschel-Bulkley Herschel Space Observatory Herschel region Herschel telescope Herschel, Bulkley model viscosity Herschel, John Herschel, John Frederick Herschel, John Frederick William Herschel, Sir William Herschel, William Herschel-Bulkley Herschel-Bulkley equation Herschel-Bulkley fluids Herschel-Bulkley general model Herschel-Bulkley model Rheological models Herschel-Bulkley Rheology Herschel-Bulkley Shear viscosity Herschel-Bulkley equation Yield-stress fluids Herschel-Bulkley model