CFD Studio 
 Manual:
  Physical Parameters
    
In Physical Parameters module it is defined the medium properties used in the simulation (Figure 1), such as:
                  
          - density; 
          - specific heat;
          - thermal conductivity;
          - viscosity;
          - expansion coefficient beta;
          - gravity.
   
Figure 1 – Physical Parameters Setup.
   

The software contains a list of some media that can be chosen by the user (Figure 2). If heat generation and gravity are required to be defined, this is done also in this window. Click in APLLY ALL CELLS for every computational mesh to have those properties.
   

Figure 2 – Physical Parameters Setup – Material Selection.
   
Selection of cells through the mouse: 

CFD Studio allows to apply a different material to a group of cells using the mouse:

i) Choose SELECT MODE (Figure 3);
ii) Using the mouse select the cells where the property of the specified material will be applied (in red – Figure 4);
iii) Click APPLY CELL to apply the material in the selected cells.
   

Figure 3 – Physical Parameters Setup – Selected cells.
   
Load a field from file:

We can also load the data from a file in LOAD FIELD FROM FILE (Figure 4), selected the parameter to be loaded (Figure 5) and the file name (Figure 6). These files are in the format table data i x j of values, where the file is in ASCII (type file " * .dat ").
   

Figure 4 – Load field from file window.



Figure 5 – Load field from file window – Parameters selection.



Figure 6 – Scalar field file window.
    Button FIT VIEW: if the mesh is not properly located, clicking on the mesh image it is automatically adjusted in the view screen. (Figure 7 and 8).
   

Figure 7 – Physical Parameters Setup – Button FIT VIEW using.



Figure 8 – Physical Parameters Setup – Button FIT VIEW using.
   
OBS: Always remember to click APPLY to enter the parameters (Figure 9).
   

Figure 9 – Simulation parameters view – Physical Parameters.
    SET REFERENCE TEMPERATURE is just enabled for convection problems (Figure 10). The button is used to define the reference temperature used in the Boussinesq aproximation, - Scientific Manual - (gr = gb(Tvol – Tref)) (Figure 11).
   

Figure 10 – Physical Parameters Setup – SET REFERENCE TEMPERATURE enable.



Figure 11 – Reference temperature window .

     
    © SINMEC/EMC/UFSC, 2001. All rights reserved.