Evaluate
Compute the average mixture property values. These will be used to compute the flow and heat transfer in the test apparatus, visualized in Figure 11.
Surface Average 1
1
In the Results toolbar, click  More Derived Values and choose Average >  Surface Average.
2
In the Settings window for Surface Average, locate the Data section.
3
From the Dataset list, choose Study 4: Glycol and Water /Vel = 1.0 m/s (sol6).
4
Select Domain 1 only. Do this by pressing Domain 1 in the Graphics window, and verifying the selection in the Selection section in the Surface Average Settings window.
5
Locate the Expressions section. In the table, enter the following settings:
Expression
Unit
Description
ht.rho
kg/m^3
Density
ht.Cp
J/(kg*K)
Heat capacity at constant pressure
ht.krr
W/(m*K)
Thermal conductivity, rr component
spf.mu
Pa*s
Dynamic viscosity
6
Click  Evaluate in the toolbar of the Settings window.
The computed averages are found in Table 1 , added under the Tables  node under  Results in the Model Builder. Now store the average property values as parameters.
Parameters 1
1
In the Model Builder window, under  Global Definitions click  Parameters 1.
2
In the Settings window for Parameters, locate the Parameters section.
3
In the table, add the following rows:
Name
Expression
Value
Description
rhoC
1010[kg/m^3]
1010 kg/m³
Average constant density
CpC
3486[J/kg/K]
3486 J/(kg·K)
Average constant heat capacity
kC
0.574[W/m/K]
0.574 W/(m·K)
Average constant conductivity
muC
9.07e-4[Pa*s]
9.07E-4 Pa·s
Average constant viscosity
Finally, compute the flow and heat transfer in the test apparatus using the averaged mixture properties. First apply the mixture parameters.