Is nanoFluidX part of HyperWorks?

Yes, it can be found in the CFD Solvers package on the Altair One Marketplace.

Does nanoFluidX have a ready-to-use fluid library inside the code?

No, not yet.

Is nanoFluidX in single or double precision?

The nanoFluidX installation comes with two binaries - single precision and double precision. Single precision is sufficient for common industrial problems.

For more information, refer to Single versus Double Precision binaries.