LES Lagrangian nest using "preset moves" option not moving

[ephraims]

Hi,
I am attempting to run a real world Lagrangian simulation by advecting a LES inner nest through a larger mesoscale domain. Attached is a diagram of my experimental plan.

I modified "max_moves" within frame/module_driver_constants.F from 50 to 1000 prior to compilation so that the inner nest (d03) is able to move only one step at a time within d02.

While WRF is able to successfully run, the LES nest does not move (determined by looking at XLAT and XLONG).

Are you able to help offer advice on why the LES nest is not moving? Also, is the resolution jump of 1050 m to 150 m too large? I know that a ratio of 7:1 is higher than recommended, but I wanted to jump the turbulent greyscale.

Attached is my namelist.input

Thanks,
Sam Ephraim

 

[Ming Chen]

Sam,

I suppose you built WRF with moving-nest option, please let me know if I am wrong.

If you tried to run with the moving nest option, note that the finer-grid domain will only move following its vortex center. I am suspicious that this option cannot be applied to LES, although I am not 100% sure.

The nesting ratio of 1:7 is not ideal, but it should work reasonably.

 

[ephraims]

I build WRF with the "preset moves" option, not the "vortex following" option. I was under the impression that I can prescribe the moves of the inner domain using "move_cd_x" and " move_cd_y" in namelist.input. Is that not the case?