In the table below are shear stress and shear rate data for three bottles of syrup (simply identified as A, B, & C). One bottle is supposed to contain pure grade 'Canada #1 very clear' maple syrup (which as we discussed in lecture is a Newtonian fluid) while the other two are thought to be cheaper grade 'pancake syrups' (i.e. corn syrup plus colouring and other additives) that have some non-Newtonian rheological behaviour. a. Analyze the data using the linear regression function in Excel to determine which bottle (if any) contains the 'pure' maple syrup; be sure to give a clear description of the exact reasons how you conclude that the syrup is a Newtonian or non-Newtonian fluid. b. For the pure maple syrup, calculate the viscosity (in cP units). Bottle A Bottle B Shear Rate Shear Stress Shear Rate Shear Stress (1/s) (Pa) (1/s) (Pa) 80 120 160 200 240 280 320 360 400 45 71 98 124 148 173 195 216 238 80 120 160 200 240 280 320 360 400 56 77 101 126 152 175 200 226 250 Bottle C Shear Rate Shear Stress (1/s) (Pa) 80 120 160 200 240 280 320 360 400 51 72 99 121 148 171 197 218 246
In the table below are shear stress and shear rate data for three bottles of syrup (simply identified as A, B, & C). One bottle is supposed to contain pure grade 'Canada #1 very clear' maple syrup (which as we discussed in lecture is a Newtonian fluid) while the other two are thought to be cheaper grade 'pancake syrups' (i.e. corn syrup plus colouring and other additives) that have some non-Newtonian rheological behaviour. a. Analyze the data using the linear regression function in Excel to determine which bottle (if any) contains the 'pure' maple syrup; be sure to give a clear description of the exact reasons how you conclude that the syrup is a Newtonian or non-Newtonian fluid. b. For the pure maple syrup, calculate the viscosity (in cP units). Bottle A Bottle B Shear Rate Shear Stress Shear Rate Shear Stress (1/s) (Pa) (1/s) (Pa) 80 120 160 200 240 280 320 360 400 45 71 98 124 148 173 195 216 238 80 120 160 200 240 280 320 360 400 56 77 101 126 152 175 200 226 250 Bottle C Shear Rate Shear Stress (1/s) (Pa) 80 120 160 200 240 280 320 360 400 51 72 99 121 148 171 197 218 246
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:In the table below are shear stress and shear rate data for three
bottles of syrup (simply identified as A, B, & C). One bottle is supposed to contain pure grade
'Canada #1 very clear' maple syrup (which as we discussed in lecture is a Newtonian fluid)
while the other two are thought to be cheaper grade 'pancake syrups' (i.e. corn syrup plus
colouring and other additives) that have some non-Newtonian rheological behaviour.
a. Analyze the data using the linear regression function in Excel to determine which bottle (if any) contains
the 'pure' maple syrup; be sure to give a clear description of the exact reasons how you conclude that the
syrup is a Newtonian or non-Newtonian fluid.
b. For the pure maple syrup, calculate the viscosity (in cP units).
Bottle A
Shear Rate Shear Stress
(1/s)
(Pa)
80
120
160
200
240
280
320
360
400
45
71
98
124
148
173
195
216
238
Bottle B
Shear Rate Shear Stress
(1/s)
(Pa)
80
120
160
200
240
280
320
360
400
56
77
101
126
152
175
200
226
250
Bottle C
Shear Rate Shear Stress
(1/s)
(Pa)
80
120
160
200
240
280
320
360
400
51
72
99
121
148
171
197
218
246
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