| Author | Message | ||
     jeff st-laurent (loulou) New member Username: loulou Post Number: 1 Registered: 02-2006 |
Hi, I have a fluid concentration profil and a temperature profil over time (T) and distance (X). The X value (distance in the x axis) of Co/2 is changing over time. I would like to get the temperature value corresponding to the position of the value Co/2 at the same time interval. So I would like to make a plot that shows the temperature on the Y axe and the distance on the X axe. So we were able to read that on the plot that I'm looking to make : The temperature of the concentration front (Co/2) was 55°C when he was at the distance of X=5 cm. | ||
| Robert G. Nelson (rgnelson) Moderator Username: rgnelson Post Number: 537 Registered: 06-2003 |
The x-coordinate of the mesh node with a value of C nearest C0/2 will be given by Xfront = GLOBALMIN_X((C-C0/2)^2) (Note: FlexPDE does not attempt to find the local minimum within a cell). The value of the temperature at this point will be Tfront = EVAL(Temp,Xfront) Then HISTORY(Tfront) versus Xfront will show the relationship you want. There may be a stair-step effect, if the same node is nearest the front for more than one cycle. If this happens, specify a very dense mesh, or use a FRONT statement. | ||
| jeff st-laurent (loulou) New member Username: loulou Post Number: 2 Registered: 02-2006 |
Thanks a lot for that jeff |