what is mean of LAMINAR?
 

what is mean of LAMINAR? What is mean of LVEL?

Re: what is mean of LAMINAR?
 

Laminar means laminar flow as opposed to the turbulent flow that occurs a high Reynolds number.

LVEL stands for lengthscale*velocity model, which is an algebraic turbulence model that is valid throughout the laminar, transitional and fully-turbulent regions of a boundary layer. This turbulence model is useful for flow situations characterised by cluttered spaces, such as for example the flow around many closely-spaced objects as encountered in electronics-cooling applications. The model presumes the existence of bounding walls, and so it is not recommended for unconfined flows like free jets.

Re: what is mean of LAMINAR?
 

if so, can I use the LVEL model to simulate the solid-water flow at a high Reynolds number in a straight pipe?

Re: what is mean of LAMINAR?
 

You can but the LVEL model knows nothing of turbulence modulation due to solid particles. The k-e model can also be used and there are extensions to account for these effects, if you believe they are important. Look in the advanced multi-phase flow library for examples. I believe there are some in that part of teh library.

Does this model use something like dimensionless turbulent viscosity? If yes, how is it calculated?