Step 12: Chart Temperature vs. Distance

We want to show temperature vs. distance at the outlet of the pipe. We will create a chart to do that, but the chart requires a line where we can sample values.

1.   In the Outline tree view in the User Location and Plots area, right-click and select Hide All, then click in the check boxes to enable the Default Legend View 1 and the Wireframe.

2.   Click the cyan (ISO) sphere in the triad so that you can again see the full elbow.

3.   Create a line at the centerline of the outlet:

(a)   On the menu bar, select Insert/Location/Line. In the Insert Line dialog box, accept the default name and click OK.

(b)   Accept the default values and click Apply. A yellow line appears near the inside of the elbow.

(c)   In the Details view for Line 1, set the following:

Tab	Setting	Value
Geometry	Point 1 $^*$	4, 7.999, 0.001
	Point 2	8, 7.999, 0.001 $^{**}$
	Line Type	Cut $^{***}$
Color	Mode	Variable
	Variable	Temperature
	Range	Local
Render	Line Width	2

   $^*$ The units are taken from the 3D Viewer options setting, which you can access from the menu bar by selecting Edit/Options.

$^{**}$ The Z value ensures that the line unambiguously passes through the domain.

$^{***}$ This setting constrains the line to be within the object.

(d)   Click Apply.

4.   Create a chart that samples the points on Line 1:

(a)   On the menu bar, select Insert/Chart. In the Insert Chart dialog box, accept the default name and click OK.

(b)   In the Details view for Chart 1, on the General tab set Title to Output Temperatures.

(c)   On the Data Series tab, right-click in the empty list box and select New, then set Name to Temperature at Line 1 and Location to Line 1.

(d)   On the X Axis tab, set Variable to X.

(e)   On the Y Axis tab, set Variable to Temperature.

(f)   Click Apply. A chart similar to the following appears in the Chart Viewer:

Figure 1.11: Chart of Output Temperatures at the Outlet

   The Chart Viewer tab is at the bottom of the viewers area.

Now add a second line to the simulation and to the chart so that you can compare temperature distributions at two points:

1.   Click on the 3D Viewer tab so that you can see the line you are about to create.

2.   Create a new line midway towards the outlet:

(a)   On the menu bar, select Insert/Location/Line. In the Insert Line dialog box, accept the default name and click OK.

(b)   In the Details view for Line 2, set the following:

Tab	Setting	Value
Geometry	Point 1 $^*$	4, 1.25, 0.001 $^{**}$
	Point 2	8, 1.25, 0.001
	Line Type	Cut $^{***}$
Color	Mode	Variable
	Variable	Temperature
	Range	Local
Render	Line Width	2

   $^*$ The units are taken from the 3D Viewer options setting, which you can access from the menu bar by selecting Edit/Options.

$^{**}$ The Z value ensures that the line unambiguously passes through the domain.

$^{***}$ This setting constrains the line to be within the object.

(c)   Click Apply. A second line appears near the middle of the top section of pipe.

3.   Add Line 2 to the existing chart:

(a)   Right-click on Outline / Report / Chart 1 and select Edit.

(b)   In the Details view for Chart 1, click on the Data Series tab, then click the New icon . A new series appears.

Select Series 2 and set the following:

Tab	Setting	Value
Series	Name	Temperature at Line 2
	Location	Line 2

(c)   Click Apply. A chart similar to the following appears in the Chart Viewer:

Figure 1.12: Chart of Output Temperatures at Two Locations

The temperatures at Line 2 are higher, which shows that less mixing has occurred than at Line 1.