ERF
Energy Research and Forecasting: An Atmospheric Modeling Code
adiabatic_mod_charnock Struct Reference

#include <ERF_MOSTStress.H>

Collaboration diagram for adiabatic_mod_charnock:

Public Member Functions

 adiabatic_mod_charnock (amrex::Real zref, amrex::Real Tflux, amrex::Real Qvflux, amrex::Real depth)
 
AMREX_GPU_DEVICE AMREX_FORCE_INLINE void iterate_flux (const int &i, const int &j, const int &k, const int &max_iters, const amrex::Array4< amrex::Real > &z0_arr, const amrex::Array4< const amrex::Real > &umm_arr, const amrex::Array4< const amrex::Real > &, const amrex::Array4< const amrex::Real > &, const amrex::Array4< const amrex::Real > &, const amrex::Array4< amrex::Real > &u_star_arr, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &t_star_arr, const amrex::Array4< amrex::Real > &q_star_arr, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &olen_arr, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &, const amrex::Array4< amrex::Real > &) const
 

Private Attributes

most_data mdata
 
similarity_funs sfuns
 
const amrex::Real tol_z = 1.0e-10
 
const amrex::Real WSMIN = 0.1
 

Detailed Description

Adiabatic with modified charnock roughness

Constructor & Destructor Documentation

◆ adiabatic_mod_charnock()

adiabatic_mod_charnock::adiabatic_mod_charnock ( amrex::Real  zref,
amrex::Real  Tflux,
amrex::Real  Qvflux,
amrex::Real  depth 
)
inline
281  {
282  mdata.zref = zref;
283  mdata.surf_temp_flux = Tflux;
284  mdata.surf_moist_flux = Qvflux;
285  mdata.Cnk_d = depth;
286  mdata.Cnk_b = mdata.Cnk_b1 * std::log(mdata.Cnk_b2 / mdata.Cnk_d);
287  }
most_data mdata
Definition: ERF_MOSTStress.H:346
amrex::Real surf_moist_flux
Moisture flux.
Definition: ERF_MOSTStress.H:20
amrex::Real zref
Reference height (m)
Definition: ERF_MOSTStress.H:15
amrex::Real Cnk_b2
Modified Charnock Eq (4) https://doi.org/10.1175/JAMC-D-17-0137.1.
Definition: ERF_MOSTStress.H:24
amrex::Real Cnk_b
Definition: ERF_MOSTStress.H:26
amrex::Real Cnk_d
Modified Charnock Eq (4) https://doi.org/10.1175/JAMC-D-17-0137.1.
Definition: ERF_MOSTStress.H:25
amrex::Real Cnk_b1
Modified Charnock Eq (4) https://doi.org/10.1175/JAMC-D-17-0137.1.
Definition: ERF_MOSTStress.H:23
amrex::Real surf_temp_flux
Heat flux.
Definition: ERF_MOSTStress.H:19

Member Function Documentation

◆ iterate_flux()

AMREX_GPU_DEVICE AMREX_FORCE_INLINE void adiabatic_mod_charnock::iterate_flux ( const int &  i,
const int &  j,
const int &  k,
const int &  max_iters,
const amrex::Array4< amrex::Real > &  z0_arr,
const amrex::Array4< const amrex::Real > &  umm_arr,
const amrex::Array4< const amrex::Real > &  ,
const amrex::Array4< const amrex::Real > &  ,
const amrex::Array4< const amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  u_star_arr,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  t_star_arr,
const amrex::Array4< amrex::Real > &  q_star_arr,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  olen_arr,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &  ,
const amrex::Array4< amrex::Real > &   
) const
inline
312  {
313  amrex::Real ustar = 0.0;
314  amrex::Real z0 = z0_arr(i,j,k);
315  amrex::Real z0_old = z0;
316  amrex::Real psi_m = 0.0;
317  amrex::Real umm = std::max(umm_arr(i,j,k), WSMIN);
318  amrex::Real C = std::log(mdata.zref / z0);
319 
320  // Fixed point iteration on roughness
321  int iter_z = 0;
322  do {
323  // Transfer curr to old
324  z0_old = z0;
325 
326  // Update
327  C = std::log(mdata.zref / z0_old);
328  ustar = mdata.kappa * umm / (C - psi_m);
329  z0 = std::exp( (2.7*ustar - 1.8/mdata.Cnk_b) / (ustar + 0.17/mdata.Cnk_b) );
330 
331  ++iter_z;
332  } while ( (std::abs(z0 - z0_old) > tol_z) && (iter_z <= max_iters) );
333  AMREX_ALWAYS_ASSERT_WITH_MESSAGE(iter_z < max_iters,
334  "Maximum number of MOST roughness iterations reached.");
335  C = std::log(mdata.zref / z0);
336 
337  // Populate the stored MOST arrays
338  z0_arr(i,j,k) = z0;
339  olen_arr(i,j,k) = 1.0e16;
340  u_star_arr(i,j,k) = mdata.kappa * umm / (C - psi_m);
341  t_star_arr(i,j,k) = 0.0;
342  q_star_arr(i,j,k) = 0.0;
343  }
amrex::Real Real
Definition: ERF_ShocInterface.H:16
const amrex::Real tol_z
Definition: ERF_MOSTStress.H:348
const amrex::Real WSMIN
Definition: ERF_MOSTStress.H:349
amrex::Real kappa
von Karman constant
Definition: ERF_MOSTStress.H:17

Member Data Documentation

◆ mdata

most_data adiabatic_mod_charnock::mdata
private

◆ sfuns

similarity_funs adiabatic_mod_charnock::sfuns
private

◆ tol_z

const amrex::Real adiabatic_mod_charnock::tol_z = 1.0e-10
private

Referenced by iterate_flux().

◆ WSMIN

const amrex::Real adiabatic_mod_charnock::WSMIN = 0.1
private

Referenced by iterate_flux().


The documentation for this struct was generated from the following file: