I know it is strongly advisable to read up on your prospective PhD supervisors' work. However, I find that most of the things are too esoteric and I would need a substantial period to absorb them. I do understand perfectly the overview of the area that they are working. I have some questions:
In writing my research interest/statement for getting into a PhD, how detailed should it be?
Is it okay to mention that you would like to work on a general field (e.g. CFD in multiphase) and not propose an specific direction?