[idrees khan]

Hello everyone.
I'm going to review a paper ( link for the paper doi:10.1016/j.cnsns.2010.07.006 )in foam-extend-4.0 version .kindly if any has code share with me or guide me how to handle.I have some questions,
1.which form of governing equation's(momentum, Heat ,relaxation time and viscosity etc ) should I use dimension form or non-dimensional form,if I'm using dimension form there are some parameters whose values are not,given.
2.In the constitutive equation(Oldroyd-B model) there is a term (material derivative of log of temperature) as well.how I would write it in openFoam.
3.how I will decide to write fvc(explicit treatment) and fvm(implicite treatment) sp and sup with different terms in equation,while writing in main source code file.
4.here the Reynolds no(Re)and Deborah no(De)is small is there still need of using Devss(which is normally used for incorporating high Re,De no's) according to my knowledge) etc forms for momentum equation.
Kindly help me I shell be very thankful,