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
1771 {}

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
1787  {
1788  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1789  amrex::Real qv = cons_arr(i,j,k,RhoQ1_comp) / rho;
1790  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1791  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1792 
1793  amrex::Real qv_mean = qvm_arr(i,j,k);
1794  amrex::Real ustar = u_star_arr(i,j,k);
1795  amrex::Real qstar = q_star_arr(i,j,k);
1796  amrex::Real qv_surf = q_surf_arr(i,j,k);
1797  amrex::Real wsp_mean = umm_arr(i,j,k);
1798  wsp_mean = std::max(wsp_mean, WSMIN);
1799 
1800  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1801  amrex::Real num1 = wsp * (qv_mean-qv_surf);
1802  amrex::Real num2 = wsp_mean * (qv-qv_mean);
1803 
1804  // NOTE: this is rho*<Qv'w'> = -K dQvdz
1805  amrex::Real moflux = (std::abs(qstar) > eps) ?
1806  -rho*qstar*ustar*(num1+num2)/((qv_mean-qv_surf)*wsp_mean) : 0.0;
1807 
1808  return moflux;
1809  }
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:1924
moeng_flux::WSMIN
const amrex::Real WSMIN
Definition: ERF_MOSTStress.H:1925

◆ 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
1825  {
1826  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1827  amrex::Real theta = cons_arr(i,j,k,RhoTheta_comp) / rho;
1828  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1829  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1830 
1831  amrex::Real theta_mean = tm_arr(i,j,k);
1832  amrex::Real ustar = u_star_arr(i,j,k);
1833  amrex::Real tstar = t_star_arr(i,j,k);
1834  amrex::Real theta_surf = t_surf_arr(i,j,k);
1835  amrex::Real wsp_mean = umm_arr(i,j,k);
1836  wsp_mean = std::max(wsp_mean, WSMIN);
1837 
1838  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1839  amrex::Real num1 = wsp * (theta_mean-theta_surf);
1840  amrex::Real num2 = wsp_mean * (theta-theta_mean);
1841 
1842  // NOTE: this is rho*<T'w'> = -K dTdz
1843  amrex::Real moflux = (std::abs(tstar) > eps) ?
1844  -rho*tstar*ustar*(num1+num2)/((theta_mean-theta_surf)*wsp_mean) : 0.0;
1845 
1846  return moflux;
1847  }
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
1861  {
1862  amrex::Real velx = velx_arr(i,j,k);
1863  amrex::Real vely = 0.25 * ( vely_arr(i ,j,k) + vely_arr(i ,j+1,k)
1864  + vely_arr(i-1,j,k) + vely_arr(i-1,j+1,k) );
1865  amrex::Real rho = 0.5 * ( cons_arr(i-1,j,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1866 
1867  amrex::Real umean = um_arr(i,j,k);
1868  amrex::Real ustar = 0.5 * ( u_star_arr(i-1,j,k) + u_star_arr(i,j,k) );
1869  amrex::Real wsp_mean = 0.5 * ( umm_arr(i-1,j,k) + umm_arr(i,j,k) );
1870  wsp_mean = std::max(wsp_mean, WSMIN);
1871 
1872  // Note: The surface mean shear stress is decomposed into tau_xz by
1873  // multiplying the modeled shear stress (rho*ustar^2) with
1874  // a factor of umean/wsp_mean for directionality; this factor
1875  // modifies the denominator from what is in Moeng 1984.
1876  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1877  amrex::Real num1 = wsp * umean;
1878  amrex::Real num2 = wsp_mean * (velx-umean);
1879 
1880  // NOTE: this is rho*<u'w'> = -K dudz
1881  amrex::Real stressx = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1882 
1883  return stressx;
1884  }

◆ 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
1898  {
1899  amrex::Real velx = 0.25 * ( velx_arr(i,j ,k) + velx_arr(i+1,j ,k)
1900  + velx_arr(i,j-1,k) + velx_arr(i+1,j-1,k) );
1901  amrex::Real vely = vely_arr(i,j,k);
1902  amrex::Real rho = 0.5 * ( cons_arr(i,j-1,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1903 
1904  amrex::Real vmean = vm_arr(i,j,k);
1905  amrex::Real ustar = 0.5 * ( u_star_arr(i,j-1,k) + u_star_arr(i,j,k) );
1906  amrex::Real wsp_mean = 0.5 * ( umm_arr(i,j-1,k) + umm_arr(i,j,k) );
1907  wsp_mean = std::max(wsp_mean, WSMIN);
1908 
1909  // Note: The surface mean shear stress is decomposed into tau_yz by
1910  // multiplying the modeled shear stress (rho*ustar^2) with
1911  // a factor of vmean/wsp_mean for directionality; this factor
1912  // modifies the denominator from what is in Moeng 1984.
1913  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1914  amrex::Real num1 = wsp * vmean;
1915  amrex::Real num2 = wsp_mean * (vely-vmean);
1916 
1917  // NOTE: this is rho*<v'w'> = -K dvdz
1918  amrex::Real stressy = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1919 
1920  return stressy;
1921  }

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: