11. Append irregular grid 

EDPIV provides a function to create complicated interrogation grid. This function may be useful for evaluating PIV recordings with a complex flow boundary. The following example shows how to append an irregular grid to the right of a regular grid. 

 

At first, select menu “Edit \ Grid structure \ Irregular” to active the function for creating irregular grid. The function can be deactivated by press “TJ” button:

 

 

To continue, determine four corners of the irregular grid, and press a “+” button in dialogue box “Irregular grid” as below:

 

 

The final grid is shown as below:

 

 

Irregular grids can be appended to other three sides in the same way.

 

Edpiv pE 2013 grid & points