ERF
Energy Research and Forecasting: An Atmospheric Modeling Code
Public Member Functions | Private Attributes | List of all members
moeng_flux Struct Reference

#include <ERF_MOSTStress.H>

Collaboration diagram for moeng_flux:
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Public Member Functions

 moeng_flux ()
 
AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real compute_q_flux (const int &i, const int &j, const int &k, const amrex::Array4< const amrex::Real > &cons_arr, const amrex::Array4< const amrex::Real > &velx_arr, const amrex::Array4< const amrex::Real > &vely_arr, const amrex::Array4< const amrex::Real > &umm_arr, const amrex::Array4< const amrex::Real > &qvm_arr, const amrex::Array4< const amrex::Real > &u_star_arr, const amrex::Array4< const amrex::Real > &q_star_arr, const amrex::Array4< const amrex::Real > &q_surf_arr) const
 
AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real compute_t_flux (const int &i, const int &j, const int &k, const amrex::Array4< const amrex::Real > &cons_arr, const amrex::Array4< const amrex::Real > &velx_arr, const amrex::Array4< const amrex::Real > &vely_arr, const amrex::Array4< const amrex::Real > &umm_arr, const amrex::Array4< const amrex::Real > &tm_arr, const amrex::Array4< const amrex::Real > &u_star_arr, const amrex::Array4< const amrex::Real > &t_star_arr, const amrex::Array4< const amrex::Real > &t_surf_arr) const
 
AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real compute_u_flux (const int &i, const int &j, const int &k, const amrex::Array4< const amrex::Real > &cons_arr, const amrex::Array4< const amrex::Real > &velx_arr, const amrex::Array4< const amrex::Real > &vely_arr, const amrex::Array4< const amrex::Real > &umm_arr, const amrex::Array4< const amrex::Real > &um_arr, const amrex::Array4< const amrex::Real > &u_star_arr) const
 
AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real compute_v_flux (const int &i, const int &j, const int &k, const amrex::Array4< const amrex::Real > &cons_arr, const amrex::Array4< const amrex::Real > &velx_arr, const amrex::Array4< const amrex::Real > &vely_arr, const amrex::Array4< const amrex::Real > &umm_arr, const amrex::Array4< const amrex::Real > &vm_arr, const amrex::Array4< const amrex::Real > &u_star_arr) const
 

Private Attributes

const amrex::Real eps = 1e-15
 
const amrex::Real WSMIN = 0.1
 

Detailed Description

Moeng flux formulation

Constructor & Destructor Documentation

◆ moeng_flux()

moeng_flux::moeng_flux ( )
inline
1767 {}

Member Function Documentation

◆ compute_q_flux()

AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real moeng_flux::compute_q_flux ( const int &  i,
const int &  j,
const int &  k,
const amrex::Array4< const amrex::Real > &  cons_arr,
const amrex::Array4< const amrex::Real > &  velx_arr,
const amrex::Array4< const amrex::Real > &  vely_arr,
const amrex::Array4< const amrex::Real > &  umm_arr,
const amrex::Array4< const amrex::Real > &  qvm_arr,
const amrex::Array4< const amrex::Real > &  u_star_arr,
const amrex::Array4< const amrex::Real > &  q_star_arr,
const amrex::Array4< const amrex::Real > &  q_surf_arr 
) const
inline
1783  {
1784  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1785  amrex::Real qv = cons_arr(i,j,k,RhoQ1_comp) / rho;
1786  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1787  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1788 
1789  amrex::Real qv_mean = qvm_arr(i,j,k);
1790  amrex::Real ustar = u_star_arr(i,j,k);
1791  amrex::Real qstar = q_star_arr(i,j,k);
1792  amrex::Real qv_surf = q_surf_arr(i,j,k);
1793  amrex::Real wsp_mean = umm_arr(i,j,k);
1794  wsp_mean = std::max(wsp_mean, WSMIN);
1795 
1796  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1797  amrex::Real num1 = wsp * (qv_mean-qv_surf);
1798  amrex::Real num2 = wsp_mean * (qv-qv_mean);
1799 
1800  // NOTE: this is rho*<Qv'w'> = -K dQvdz
1801  amrex::Real moflux = (std::abs(qstar) > eps) ?
1802  -rho*qstar*ustar*(num1+num2)/((qv_mean-qv_surf)*wsp_mean) : 0.0;
1803 
1804  return moflux;
1805  }
Rho_comp
#define Rho_comp
Definition: ERF_IndexDefines.H:36
RhoQ1_comp
#define RhoQ1_comp
Definition: ERF_IndexDefines.H:42
Real
amrex::Real Real
Definition: ERF_ShocInterface.H:19
MicVar_Kess::rho
@ rho
Definition: ERF_Kessler.H:22
MicVar_Kess::qv
@ qv
Definition: ERF_Kessler.H:28
moeng_flux::eps
const amrex::Real eps
Definition: ERF_MOSTStress.H:1920
moeng_flux::WSMIN
const amrex::Real WSMIN
Definition: ERF_MOSTStress.H:1921

◆ compute_t_flux()

AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real moeng_flux::compute_t_flux ( const int &  i,
const int &  j,
const int &  k,
const amrex::Array4< const amrex::Real > &  cons_arr,
const amrex::Array4< const amrex::Real > &  velx_arr,
const amrex::Array4< const amrex::Real > &  vely_arr,
const amrex::Array4< const amrex::Real > &  umm_arr,
const amrex::Array4< const amrex::Real > &  tm_arr,
const amrex::Array4< const amrex::Real > &  u_star_arr,
const amrex::Array4< const amrex::Real > &  t_star_arr,
const amrex::Array4< const amrex::Real > &  t_surf_arr 
) const
inline
1821  {
1822  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1823  amrex::Real theta = cons_arr(i,j,k,RhoTheta_comp) / rho;
1824  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1825  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1826 
1827  amrex::Real theta_mean = tm_arr(i,j,k);
1828  amrex::Real ustar = u_star_arr(i,j,k);
1829  amrex::Real tstar = t_star_arr(i,j,k);
1830  amrex::Real theta_surf = t_surf_arr(i,j,k);
1831  amrex::Real wsp_mean = umm_arr(i,j,k);
1832  wsp_mean = std::max(wsp_mean, WSMIN);
1833 
1834  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1835  amrex::Real num1 = wsp * (theta_mean-theta_surf);
1836  amrex::Real num2 = wsp_mean * (theta-theta_mean);
1837 
1838  // NOTE: this is rho*<T'w'> = -K dTdz
1839  amrex::Real moflux = (std::abs(tstar) > eps) ?
1840  -rho*tstar*ustar*(num1+num2)/((theta_mean-theta_surf)*wsp_mean) : 0.0;
1841 
1842  return moflux;
1843  }
RhoTheta_comp
#define RhoTheta_comp
Definition: ERF_IndexDefines.H:37
LsmVar_MM5::theta
@ theta
Definition: ERF_MM5.H:20

◆ compute_u_flux()

AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real moeng_flux::compute_u_flux ( const int &  i,
const int &  j,
const int &  k,
const amrex::Array4< const amrex::Real > &  cons_arr,
const amrex::Array4< const amrex::Real > &  velx_arr,
const amrex::Array4< const amrex::Real > &  vely_arr,
const amrex::Array4< const amrex::Real > &  umm_arr,
const amrex::Array4< const amrex::Real > &  um_arr,
const amrex::Array4< const amrex::Real > &  u_star_arr 
) const
inline
1857  {
1858  amrex::Real velx = velx_arr(i,j,k);
1859  amrex::Real vely = 0.25 * ( vely_arr(i ,j,k) + vely_arr(i ,j+1,k)
1860  + vely_arr(i-1,j,k) + vely_arr(i-1,j+1,k) );
1861  amrex::Real rho = 0.5 * ( cons_arr(i-1,j,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1862 
1863  amrex::Real umean = um_arr(i,j,k);
1864  amrex::Real ustar = 0.5 * ( u_star_arr(i-1,j,k) + u_star_arr(i,j,k) );
1865  amrex::Real wsp_mean = 0.5 * ( umm_arr(i-1,j,k) + umm_arr(i,j,k) );
1866  wsp_mean = std::max(wsp_mean, WSMIN);
1867 
1868  // Note: The surface mean shear stress is decomposed into tau_xz by
1869  // multiplying the modeled shear stress (rho*ustar^2) with
1870  // a factor of umean/wsp_mean for directionality; this factor
1871  // modifies the denominator from what is in Moeng 1984.
1872  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1873  amrex::Real num1 = wsp * umean;
1874  amrex::Real num2 = wsp_mean * (velx-umean);
1875 
1876  // NOTE: this is rho*<u'w'> = -K dudz
1877  amrex::Real stressx = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1878 
1879  return stressx;
1880  }

◆ compute_v_flux()

AMREX_GPU_DEVICE AMREX_FORCE_INLINE amrex::Real moeng_flux::compute_v_flux ( const int &  i,
const int &  j,
const int &  k,
const amrex::Array4< const amrex::Real > &  cons_arr,
const amrex::Array4< const amrex::Real > &  velx_arr,
const amrex::Array4< const amrex::Real > &  vely_arr,
const amrex::Array4< const amrex::Real > &  umm_arr,
const amrex::Array4< const amrex::Real > &  vm_arr,
const amrex::Array4< const amrex::Real > &  u_star_arr 
) const
inline
1894  {
1895  amrex::Real velx = 0.25 * ( velx_arr(i,j ,k) + velx_arr(i+1,j ,k)
1896  + velx_arr(i,j-1,k) + velx_arr(i+1,j-1,k) );
1897  amrex::Real vely = vely_arr(i,j,k);
1898  amrex::Real rho = 0.5 * ( cons_arr(i,j-1,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1899 
1900  amrex::Real vmean = vm_arr(i,j,k);
1901  amrex::Real ustar = 0.5 * ( u_star_arr(i,j-1,k) + u_star_arr(i,j,k) );
1902  amrex::Real wsp_mean = 0.5 * ( umm_arr(i,j-1,k) + umm_arr(i,j,k) );
1903  wsp_mean = std::max(wsp_mean, WSMIN);
1904 
1905  // Note: The surface mean shear stress is decomposed into tau_yz by
1906  // multiplying the modeled shear stress (rho*ustar^2) with
1907  // a factor of vmean/wsp_mean for directionality; this factor
1908  // modifies the denominator from what is in Moeng 1984.
1909  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1910  amrex::Real num1 = wsp * vmean;
1911  amrex::Real num2 = wsp_mean * (vely-vmean);
1912 
1913  // NOTE: this is rho*<v'w'> = -K dvdz
1914  amrex::Real stressy = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1915 
1916  return stressy;
1917  }

Member Data Documentation

◆ eps

const amrex::Real moeng_flux::eps = 1e-15
private

Referenced by compute_q_flux(), and compute_t_flux().

◆ WSMIN

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

Referenced by compute_q_flux(), compute_t_flux(), compute_u_flux(), and compute_v_flux().

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