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>

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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 = amrex::Real(1e-15)
 
const amrex::Real WSMIN = amrex::Real(0.1)
 

Detailed Description

Moeng flux formulation

Constructor & Destructor Documentation

◆ moeng_flux()

moeng_flux::moeng_flux ( )
inline
1801 {}

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
1817  {
1818  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1819  amrex::Real qv = cons_arr(i,j,k,RhoQ1_comp) / rho;
1820  amrex::Real velx = myhalf * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1821  amrex::Real vely = myhalf * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1822 
1823  amrex::Real qv_mean = qvm_arr(i,j,0);
1824  amrex::Real ustar = u_star_arr(i,j,0);
1825  amrex::Real qstar = q_star_arr(i,j,0);
1826  amrex::Real qv_surf = q_surf_arr(i,j,0);
1827  amrex::Real wsp_mean = umm_arr(i,j,0);
1828  wsp_mean = std::max(wsp_mean, WSMIN);
1829 
1830  amrex::Real wsp = std::sqrt(velx*velx+vely*vely);
1831  amrex::Real num1 = wsp * (qv_mean-qv_surf);
1832  amrex::Real num2 = wsp_mean * (qv-qv_mean);
1833 
1834  // NOTE: this is rho*<Qv'w'> = -K dQvdz
1835  amrex::Real moflux = (std::abs(qstar) > eps) ?
1836  -rho*qstar*ustar*(num1+num2)/((qv_mean-qv_surf)*wsp_mean) : zero;
1837 
1838  return moflux;
1839  }
zero
constexpr amrex::Real zero
Definition: ERF_Constants.H:8
myhalf
constexpr amrex::Real myhalf
Definition: ERF_Constants.H:13
Rho_comp
#define Rho_comp
Definition: ERF_IndexDefines.H:36
RhoQ1_comp
#define RhoQ1_comp
Definition: ERF_IndexDefines.H:42
rho
rho
Definition: ERF_InitCustomPert_Bubble.H:106
Real
amrex::Real Real
Definition: ERF_ShocInterface.H:19
MicVar_Kess::qv
@ qv
Definition: ERF_Kessler.H:29
moeng_flux::eps
const amrex::Real eps
Definition: ERF_MOSTStress.H:1957
moeng_flux::WSMIN
const amrex::Real WSMIN
Definition: ERF_MOSTStress.H:1959

◆ 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
1855  {
1856  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1857  amrex::Real theta = cons_arr(i,j,k,RhoTheta_comp) / rho;
1858  amrex::Real velx = myhalf * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1859  amrex::Real vely = myhalf * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1860 
1861  amrex::Real theta_mean = tm_arr(i,j,0);
1862  amrex::Real ustar = u_star_arr(i,j,0);
1863  amrex::Real tstar = t_star_arr(i,j,0);
1864  amrex::Real theta_surf = t_surf_arr(i,j,0);
1865  amrex::Real wsp_mean = umm_arr(i,j,0);
1866  wsp_mean = std::max(wsp_mean, WSMIN);
1867 
1868  amrex::Real wsp = std::sqrt(velx*velx+vely*vely);
1869  amrex::Real num1 = wsp * (theta_mean-theta_surf);
1870  amrex::Real num2 = wsp_mean * (theta-theta_mean);
1871 
1872  // NOTE: this is rho*<T'w'> = -K dTdz
1873  amrex::Real moflux = (std::abs(tstar) > eps) ?
1874  -rho*tstar*ustar*(num1+num2)/((theta_mean-theta_surf)*wsp_mean) : zero;
1875 
1876  return moflux;
1877  }
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
1891  {
1892  amrex::Real velx = velx_arr(i,j,k);
1893  amrex::Real vely = fourth * ( vely_arr(i ,j,k) + vely_arr(i ,j+1,k)
1894  + vely_arr(i-1,j,k) + vely_arr(i-1,j+1,k) );
1895  amrex::Real rho = myhalf * ( cons_arr(i-1,j,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1896 
1897  amrex::Real umean = um_arr(i,j,0);
1898  amrex::Real ustar = myhalf * ( u_star_arr(i-1,j,0) + u_star_arr(i,j,0) );
1899  amrex::Real wsp_mean = myhalf * ( umm_arr(i-1,j,0) + umm_arr(i,j,0) );
1900  wsp_mean = std::max(wsp_mean, WSMIN);
1901 
1902  // Note: The surface mean shear stress is decomposed into tau_xz by
1903  // multiplying the modeled shear stress (rho*ustar^2) with
1904  // a factor of umean/wsp_mean for directionality; this factor
1905  // modifies the denominator from what is in Moeng amrex::Real(1984.)
1906  amrex::Real wsp = std::sqrt(velx*velx+vely*vely);
1907  amrex::Real num1 = wsp * umean;
1908  amrex::Real num2 = wsp_mean * (velx-umean);
1909 
1910  // NOTE: this is rho*<u'w'> = -K dudz
1911  amrex::Real stressx = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1912 
1913  return stressx;
1914  }
fourth
constexpr amrex::Real fourth
Definition: ERF_Constants.H:14

◆ 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
1928  {
1929  amrex::Real velx = fourth * ( velx_arr(i,j ,k) + velx_arr(i+1,j ,k)
1930  + velx_arr(i,j-1,k) + velx_arr(i+1,j-1,k) );
1931  amrex::Real vely = vely_arr(i,j,k);
1932  amrex::Real rho = myhalf * ( cons_arr(i,j-1,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1933 
1934  amrex::Real vmean = vm_arr(i,j,0);
1935  amrex::Real ustar = myhalf * ( u_star_arr(i,j-1,0) + u_star_arr(i,j,0) );
1936  amrex::Real wsp_mean = myhalf * ( umm_arr(i,j-1,0) + umm_arr(i,j,0) );
1937  wsp_mean = std::max(wsp_mean, WSMIN);
1938 
1939  // Note: The surface mean shear stress is decomposed into tau_yz by
1940  // multiplying the modeled shear stress (rho*ustar^2) with
1941  // a factor of vmean/wsp_mean for directionality; this factor
1942  // modifies the denominator from what is in Moeng amrex::Real(1984.)
1943  amrex::Real wsp = std::sqrt(velx*velx+vely*vely);
1944  amrex::Real num1 = wsp * vmean;
1945  amrex::Real num2 = wsp_mean * (vely-vmean);
1946 
1947  // NOTE: this is rho*<v'w'> = -K dvdz
1948  amrex::Real stressy = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1949 
1950  return stressy;
1951  }

Member Data Documentation

◆ eps

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

Referenced by compute_q_flux(), and compute_t_flux().

◆ WSMIN

const amrex::Real moeng_flux::WSMIN = amrex::Real(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: