Sorry, no. I'm a gardener, so I'm more about the soil...
Why do you ask?
He just needs a cfd expert, he's already got water
As long as the roots are not severed, all is well. And all will be well in the garden.
The field of fluid dynamics is enormous to the point that experts from its different branches may not understand each other (how much resemblance bear under the hood the modeling of weather, internal combustion engines, oil wells).