Hafiz Mudaser Ahmad

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Questions related from Hafiz Mudaser Ahmad

What is the physical meaning of negative yield stress of bentonite suspension obtained by using Herschel Bulkley Model ?

I am performing flow sweep experiment using DHR-3 rheometer for bentonite suspensions. When the data was fitted in Herschel-Bulkley Model, It's giving negative yield stress. What does negative...

26 December 2016 7,139 0 View

How revolution per minute (rpm) is converted into shear rate in case of viscometers.?

I am working on drilling fluids. When we perform rheological experiments with a viscometer, usually it gives us shear stress values corresponding to particular revolution per minute (rpm). Then...

11 December 2016 3,408 11 View