1) Right-click on Results>Data Sets and select Cut Plane
2) In the Settings window, change Plane type to General
3) Define your plane that cuts through your geometry
4) Right-click on Results and select 2D Plot Group
5) Right-click on 2D Plot Group and select More Plots> Max/Min Surface
6) Right-click on Derived Values>Average>Surface Average
7) In the Settings window, change the Data set to Cut Plane 1
8) In the Expression field, select appropriate expression (ie T, p, etc) to find average
But sir, while following the method you have suggested, it is plotting the results with a range of 0-1 and a step of 0.1. But, the time step I require is in the range of 0-86100 with a step of 300. How can I change it to the required pattern??