Dear Sir,
i would like to know limitation of WRC 107.
means up to what extent we can use WRC 107 and then we have to use FEA instead of WRC.
this is for channel shell and nozzle.
up to what value of di/Di we can use WRC107 etc.

Samir,

Just refer WRCB-107 starting few pages for limitations. You need to understand what the author says. Then there are limitations based on curve values given which you can see from the curves itself.

folks

Sometimes the limits of the various graphs are exceeded. Where that is the case, we place an exclamation point next to the appropriate graph data to warn the user. Where extrapolation takes place, we try to be conservative.