w_advection

[TLWise]

w (z velocity) is not recognized in NSFVMomentumAdvection, INSFVMomentumPressure , FVDiffusion. What file will I need to modify in order to include w?

[GiudGiud]

w should be the variable, not an extra argument, for INSFVMomentumPressure and FVDiffusion.
Could you please paste here your FVKernel syntax?

Thanks,
Guillaume

[TLWise]

Thank you for you interest in potentially helping me to solve this issue. Here is the syntax for the FVKernels:

[FVKernels]
[mass]
type = INSFVMassAdvection
variable = pressure
advected_interp_method = ${advected_interp_method}
velocity_interp_method = ${velocity_interp_method}
vel = 'velocity'
pressure = pressure
u = u
v = v
w = w
mu = ${mu}
rho = ${rho}
[]

[u_advection]
type = INSFVMomentumAdvection
variable = u
advected_quantity = 'rhou'
vel = 'velocity'
advected_interp_method = ${advected_interp_method}
velocity_interp_method = ${velocity_interp_method}
pressure = pressure
u = u
v = v
w = w
mu = ${mu}
rho = ${rho}
[]

[u_viscosity]
type = FVDiffusion
variable = u
coeff = ${mu}
[]

[u_pressure]
type = INSFVMomentumPressure
variable = u
momentum_component = 'x'
p = pressure
[]

[v_advection]
type = INSFVMomentumAdvection
variable = v
advected_quantity = 'rhov'
vel = 'velocity'
advected_interp_method = ${advected_interp_method}
velocity_interp_method = ${velocity_interp_method}
pressure = pressure
u = u
v = v
mu = ${mu}
rho = ${rho}
[]

[v_viscosity]
type = FVDiffusion
variable = v
coeff = ${mu}
[]

[v_pressure]
type = INSFVMomentumPressure
variable = v
momentum_component = 'y'
p = pressure
[]

[w_advection]
type = INSFVMomentumAdvection
variable = w
advected_quantity = 'rhow'
vel = 'velocity'
advected_interp_method = ${advected_interp_method}
velocity_interp_method = ${velocity_interp_method}
pressure = pressure
u = u
v = v
w = w
mu = ${mu}
rho = ${rho}
[]

[w_viscosity]
type = FVDiffusion
variable = w
coeff = ${mu}
[]

[w_pressure]
type = INSFVMomentumPressure
variable = w
momentum_component = 'z'
p = pressure
[]

[]

[GiudGiud]

It looks like you are missing w = 'w' for the v_advection kernel.
I ll check it more offline

[GiudGiud]

It runs fine for me now when moving those kernels with the fix in an example problem

[TLWise]

Wow! That is awesome! Thank you for your sage guidance on this problem.