2.- The following experimental data shows the variation of kinematic viscosity with the increase of temperature for pure air. Air viscosity is primarily a function of temperature, and can be modeled in tems of temperature with the input of experimental reference measurements. T(°C) 10 20 40 60 80 100 120 μ (105 m /s) 1.5 1.6 1.7 1.9 2.1 2.4 3.0 a) Plot the experimental data in a scatter graph. Show kinematic viscosity as a function of the temperature. a/T b) Include in the previous graph the curve given by the following viscosity equation: u = 1+/T where u is kinematic viscosity in 10s m?/s, Tis the temperature in °C, a=0.238, and b=- 5.1. Compare this curve with the data given. Is this equation a good mathematical model for the variation of kinematic viscosity with the increase of temperature for pure air? e) Find the kinematic viscosity value for T=48 °C and for T=92 °C.
2.- The following experimental data shows the variation of kinematic viscosity with the increase of temperature for pure air. Air viscosity is primarily a function of temperature, and can be modeled in tems of temperature with the input of experimental reference measurements. T(°C) 10 20 40 60 80 100 120 μ (105 m /s) 1.5 1.6 1.7 1.9 2.1 2.4 3.0 a) Plot the experimental data in a scatter graph. Show kinematic viscosity as a function of the temperature. a/T b) Include in the previous graph the curve given by the following viscosity equation: u = 1+/T where u is kinematic viscosity in 10s m?/s, Tis the temperature in °C, a=0.238, and b=- 5.1. Compare this curve with the data given. Is this equation a good mathematical model for the variation of kinematic viscosity with the increase of temperature for pure air? e) Find the kinematic viscosity value for T=48 °C and for T=92 °C.
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Transcribed Image Text:2.- The following experimental data shows the variation of kinematic viscosity with the increase of
temperature for pure air. Air viscosity is primarily a function of temperature, and can be modeled in tems of
temperature with the input of experimental reference measurements.
T("C)
10
20
40
60
80
100
120
µ (10$ m²/s)
1.5
1.6
1.7
1.9
2.1
2.4
3.0
a) Plot the experimental data in a scatter graph. Show kinematic viscosity as a function of the temperature.
a/T
b) Include in the previous graph the curve given by the following viscosity equation: u =
1+ b/T
where u is kinematic viscosity in 10s m²/s, Tis the temperature in °C, a=0.238, and b=- 5.1.
Compare this curve with the data given. Is this equation a good mathematical model for the variation of
kinematic viscosity with the increase of temperature for pure air?
e) Find the kinematic viscosity value for T=48 °C and for T=92 °C.
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