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Question 17 A fluid is flowing in a horizontal pipe. It is known to be Non-Newtonian and the pressure drop per length is said to be 917 Pa/m. The ID of the pipe is 37 mm. The following data was recorded; Calculate uave Table 4: Data relating the shear stress and shear rate Shear stress (t) (Pa] 0.00 1.70 3.39 5.09 6.78 Shear rate (-0) [s] 0.00 3.91 12.41 24.38 39.39 8.48 10.18 57.14 77.43 Use the following equation: Suave 4 TW ***.***(-V)dt =26= 3 di Tw Hint: Determine tw first (using the equation from notes that relates tw to AP/L) and evaluate the integral graphically or numerically. f = 16/Re 0.01 BBU Fanning friction factor, AN Dve Experimental regions Exptrapolated regions 63 48 100000 0.0 0.001 1000 10000 Generalized Reynolds number, Re Friction factor chart for purely viscous non-Newtonian fluids Figure 6: Frictional factor chart for viscous non-Newtonian Fluids