Spalding's composite wall function
 

Dear Foamers,
Could anyone clarify me the following questions.

1. If I use nutspallartAllmaraswallfunction for nut then does it uses Spaldings composite wall function as mentioned in Viscous fluid flow ,p.419 ,White(2006)?

2. What boundary condition should I specify for k and omega for walls ?
- is it zeroGradient for k and omega ?

Thanks