The Power-Law Coefficient

摘要

The geometry of the screw makes shear heating hard to understand. Envision a flightless shaft turning in a tube. Visualize a very viscous fluid filling the space between the shaft and tube, and a slight bit of pressure at the right end. Since this imaginary material is very viscous it will take take a lot of work to turn the shaft. The slight pressure moves the viscous fluid from right to left.