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Energy Research and Forecasting: An Atmospheric Modeling Code
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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
1575 {}

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
1591  {
1592  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1593  amrex::Real qv = cons_arr(i,j,k,RhoQ1_comp) / rho;
1594  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1595  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1596 
1597  amrex::Real qv_mean = qvm_arr(i,j,k);
1598  amrex::Real ustar = u_star_arr(i,j,k);
1599  amrex::Real qstar = q_star_arr(i,j,k);
1600  amrex::Real qv_surf = q_surf_arr(i,j,k);
1601  amrex::Real wsp_mean = umm_arr(i,j,k);
1602  wsp_mean = std::max(wsp_mean, WSMIN);
1603 
1604  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1605  amrex::Real num1 = wsp * (qv_mean-qv_surf);
1606  amrex::Real num2 = wsp_mean * (qv-qv_mean);
1607 
1608  // NOTE: this is rho*<Qv'w'> = -K dQvdz
1609  amrex::Real moflux = (std::abs(qstar) > eps) ?
1610  -rho*qstar*ustar*(num1+num2)/((qv_mean-qv_surf)*wsp_mean) : 0.0;
1611 
1612  return moflux;
1613  }
Rho_comp
#define Rho_comp
Definition: ERF_IndexDefines.H:36
RhoQ1_comp
#define RhoQ1_comp
Definition: ERF_IndexDefines.H:42
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:1728
moeng_flux::WSMIN
const amrex::Real WSMIN
Definition: ERF_MOSTStress.H:1729

◆ 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
1629  {
1630  amrex::Real rho = cons_arr(i,j,k,Rho_comp);
1631  amrex::Real theta = cons_arr(i,j,k,RhoTheta_comp) / rho;
1632  amrex::Real velx = 0.5 * ( velx_arr(i,j,k) + velx_arr(i+1,j ,k) );
1633  amrex::Real vely = 0.5 * ( vely_arr(i,j,k) + vely_arr(i ,j+1,k) );
1634 
1635  amrex::Real theta_mean = tm_arr(i,j,k);
1636  amrex::Real ustar = u_star_arr(i,j,k);
1637  amrex::Real tstar = t_star_arr(i,j,k);
1638  amrex::Real theta_surf = t_surf_arr(i,j,k);
1639  amrex::Real wsp_mean = umm_arr(i,j,k);
1640  wsp_mean = std::max(wsp_mean, WSMIN);
1641 
1642  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1643  amrex::Real num1 = wsp * (theta_mean-theta_surf);
1644  amrex::Real num2 = wsp_mean * (theta-theta_mean);
1645 
1646  // NOTE: this is rho*<T'w'> = -K dTdz
1647  amrex::Real moflux = (std::abs(tstar) > eps) ?
1648  -rho*tstar*ustar*(num1+num2)/((theta_mean-theta_surf)*wsp_mean) : 0.0;
1649 
1650  return moflux;
1651  }
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
1665  {
1666  amrex::Real velx = velx_arr(i,j,k);
1667  amrex::Real vely = 0.25 * ( vely_arr(i ,j,k) + vely_arr(i ,j+1,k)
1668  + vely_arr(i-1,j,k) + vely_arr(i-1,j+1,k) );
1669  amrex::Real rho = 0.5 * ( cons_arr(i-1,j,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1670 
1671  amrex::Real umean = um_arr(i,j,k);
1672  amrex::Real ustar = 0.5 * ( u_star_arr(i-1,j,k) + u_star_arr(i,j,k) );
1673  amrex::Real wsp_mean = 0.5 * ( umm_arr(i-1,j,k) + umm_arr(i,j,k) );
1674  wsp_mean = std::max(wsp_mean, WSMIN);
1675 
1676  // Note: The surface mean shear stress is decomposed into tau_xz by
1677  // multiplying the modeled shear stress (rho*ustar^2) with
1678  // a factor of umean/wsp_mean for directionality; this factor
1679  // modifies the denominator from what is in Moeng 1984.
1680  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1681  amrex::Real num1 = wsp * umean;
1682  amrex::Real num2 = wsp_mean * (velx-umean);
1683 
1684  // NOTE: this is rho*<u'w'> = -K dudz
1685  amrex::Real stressx = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1686 
1687  return stressx;
1688  }

◆ 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
1702  {
1703  amrex::Real velx = 0.25 * ( velx_arr(i,j ,k) + velx_arr(i+1,j ,k)
1704  + velx_arr(i,j-1,k) + velx_arr(i+1,j-1,k) );
1705  amrex::Real vely = vely_arr(i,j,k);
1706  amrex::Real rho = 0.5 * ( cons_arr(i,j-1,k,Rho_comp) + cons_arr(i,j,k,Rho_comp) );
1707 
1708  amrex::Real vmean = vm_arr(i,j,k);
1709  amrex::Real ustar = 0.5 * ( u_star_arr(i,j-1,k) + u_star_arr(i,j,k) );
1710  amrex::Real wsp_mean = 0.5 * ( umm_arr(i,j-1,k) + umm_arr(i,j,k) );
1711  wsp_mean = std::max(wsp_mean, WSMIN);
1712 
1713  // Note: The surface mean shear stress is decomposed into tau_yz by
1714  // multiplying the modeled shear stress (rho*ustar^2) with
1715  // a factor of vmean/wsp_mean for directionality; this factor
1716  // modifies the denominator from what is in Moeng 1984.
1717  amrex::Real wsp = sqrt(velx*velx+vely*vely);
1718  amrex::Real num1 = wsp * vmean;
1719  amrex::Real num2 = wsp_mean * (vely-vmean);
1720 
1721  // NOTE: this is rho*<v'w'> = -K dvdz
1722  amrex::Real stressy = -rho*ustar*ustar * (num1+num2)/(wsp_mean*wsp_mean);
1723 
1724  return stressy;
1725  }

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: