Hello Subashni

Thank you for the quick response. Let me explain my scenario. 

When we model a electronic component, all the parts are taking the same default convection value. In my case component is closed and convection should be applied only on outer surface. In general, when I assign heat input default convection is getting applied for all the parts(inside parts and outer surface).

How can I assign default convection to outer surfaces only?? 

PS: Need solution in Explore stage only.