Case learning about example.UAE_PhaseVI.ALMAdvanced.

[Dawan-H]

Hi all:
The pisoFoam.ALMAdvanced solver used the “single actuator drag line model” when considering the tower in numerical simulation.In SOWFA,there is an example case about the numerical calculation of “NREL Phase VI experiment” named "example.UAE_PhaseVI.ALMAdvanced".
1、As a new learner of OpenFoam and SOWFA,I didn't change any parameter and run the example case,but the result of bladeAxialForce did not match the result in the paper 《Modeling Wind Turbine Tower and Nacelle Effects within an Actuator Line Model》.So I read the file horizontalAxisWindTurbinesALMAdvanced.C to help understand the defination of "bladeAxialForce" ,my understanding is the axial direction of lift force and drag force,is that right?
2、Besides,the parameter Cd and epsilon in the paper still confused me.Is Cd the drag force coefficient of the tower or the nacelle?And in the file named turbineArrayProperties,bladeEpsilon、nacelleEpsilon and towerEpsilon seemed like being composed of a matrix with one row and three columns.But the definition of each number is still confusing to me.

Can anyone help me out how to solve this issue?
Thanks in advance!

Tianhao