Prompted by seeing References for moving and nested grids in models. The asker is after information on "concepts such as moving grids and nested grids in models", which if asked as such would probably get closed as too broad.
However, what they actually ask for is a reference so that they can go and read about this.
In one respect it's a valid question, and it might be helpful to others. But all that it can attract are something akin to link-only answers, and it doesn't feel like it's in the "spirit" of StackExchange.
 Note: I don't think that the usual argument against allowing link-only answers (which is that the links may change or disappear) really applies to requesting a reference to academic literature, which should be constant and findable in the future.