1D:Dialog RunCalculationWithFilm

Dialog: Run Calculation with Film

This full-screen dialog displays the results of the calculation, while in progress, in the form of a 'film' showing the thermal and hygric processes in the building component as an animation.

Use the control buttons to
start the calculation,
pause and resume the calculation,
single-step through the calculation.

After the calculation has finished, you may view the film again: choose "Outputs | View Film" to start a film viewer which offers additional options for operation and analysis.

The speed slider allows you to slow the display down (for demonstration purposes). Drag the slider with the mouse or adjust it with the cursor keys or the PageUp/PageDown or Home/End keys.
If the speed is set too high, the film viewer may start to skip 'frames'.

The clock and the calendar show you the current date the film display has reached.
 

In the left part of the screen, the temporal sequence of the hourly profiles of temperature, relative humidity / vapor pressure and water content is displayed as a film. The selection of the curves to be displayed, the adjustment of the axes and editing of other settings are done in a subdialog which can be reached by pressing the button "Properties".

The temperature (red) is displayed in the upper diagram. Water content (blue) and relative humidity / vapor pressure (green) are both displayed in the lower diagram. The left Y-axis corresponds to the water content, the right Y-axis, to the relative humidity / vapor pressure.

You can zoom into the component by dragging open a zoom frame from upper left to lower right. To zoom out, drag open a zoom frame from lower right to upper left.
Point the cursor at one of the curves to see the x-coordinate and the curve value displayed in the status bar.

The current boundary conditions (air temperatures and relative humidities / vapor pressures) are indicated by red and green arrows, respectively, at the sides of the diagrams. The left climate may include radiation and rain whose intensities are displayed by the respective bar indicators.
 

Above the diagrams the heat and moisture flows across the two component surfaces and the inner material interfaces are indicated by arrows whose length depends on the strength of the respective flow (these arrows are further discussed in the online help for the subdialog "Properties").

Point the cursor at one of the arrows to see the flux value displayed in the status bar.

At the exterior surface, the heat flow indicated by the arrows includes the incident solar radiation,

which is what the viewer intuitively expects in general. Note, however, that electromagnetic radiation is not really a heat flow, and in the Result Graphs only the proper heat flows are displayed. While incident solar radiation will create a large 'heat flow' arrow in the positive x-direction, what really happens is that the radiation is absorbed in the material and becomes converted to heat, most of which flows as a proper heat flow out of the component, in negative x-direction. This is further discussed in the Questions & Answers section.

The moisture flow is the sum of diffusion flow and capillary flow.
 

You can speed up the calculation by performing it without film. Choose "Run | Run Calculation" instead of "Run | Run Calculation with Film". WUFI then only displays a progress bar: