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wall model refactor #335
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wall model refactor #335
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| #ifndef ShearStress_H | ||
| #define ShearStress_H | ||
|
|
||
| #include "amr-wind/wind_energy/MOData.H" | ||
|
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||
| /** | ||
| * \defgroup shear_stress Shear Stress Wall Models | ||
| * | ||
| * ShearStress contains functions to compute velocity and temperature shear | ||
| * stress wall models the default is the Moeng wall model specifying the wall | ||
| * model is done through the input file using ABL.wall_shear_stress_type options | ||
| * include "constant", "local", "Schumann", and "Moeng" | ||
| * | ||
| * \ingroup we_abl | ||
| */ | ||
|
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| struct ShearStressConstant | ||
| { | ||
| explicit ShearStressConstant(const amr_wind::MOData& mo) | ||
| : utau2(mo.utau * mo.utau) | ||
| , u_mean(mo.vel_mean[0]) | ||
| , v_mean(mo.vel_mean[1]) | ||
| , wspd_mean(mo.vmag_mean) | ||
| , theta_mean(mo.theta_mean) | ||
| , theta_surface(mo.surf_temp) | ||
| , term1(mo.utau * mo.kappa / mo.phi_h()) | ||
| {} | ||
|
|
||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_x(amrex::Real /* u */, amrex::Real /* wspd */) const | ||
| { | ||
| return u_mean / wspd_mean * utau2; | ||
| }; | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_y(amrex::Real /* u */, amrex::Real /* wspd */) const | ||
| { | ||
| return v_mean / wspd_mean * utau2; | ||
| }; | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_theta(amrex::Real /* wspd */, amrex::Real /* theta */) const | ||
| { | ||
| return term1 * (theta_mean - theta_surface); | ||
| }; | ||
|
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| amrex::Real utau2; | ||
| amrex::Real u_mean; | ||
| amrex::Real v_mean; | ||
| amrex::Real wspd_mean; | ||
| amrex::Real theta_mean; | ||
| amrex::Real theta_surface; | ||
| amrex::Real term1; | ||
| }; | ||
|
|
||
| struct ShearStressLocal | ||
| { | ||
| explicit ShearStressLocal(const amr_wind::MOData& mo) | ||
| : utau2(mo.utau * mo.utau) | ||
| , theta_surface(mo.surf_temp) | ||
| , term1(mo.utau * mo.kappa / mo.phi_h()) | ||
| {} | ||
|
|
||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_x(amrex::Real u, amrex::Real wspd) const | ||
| { | ||
| return u / amrex::max(wspd, small_vel) * utau2; | ||
| }; | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_y(amrex::Real v, amrex::Real wspd) const | ||
| { | ||
| return v / amrex::max(wspd, small_vel) * utau2; | ||
| }; | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_theta(amrex::Real /* wspd */, amrex::Real theta) const | ||
| { | ||
| return term1 * (theta - theta_surface); | ||
| }; | ||
|
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| amrex::Real utau2; | ||
| amrex::Real theta_surface; | ||
| amrex::Real term1; | ||
| amrex::Real small_vel{1.0e-6}; | ||
| }; | ||
|
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||
| struct ShearStressSchumann | ||
| { | ||
| explicit ShearStressSchumann(const amr_wind::MOData& mo) | ||
| : utau2(mo.utau * mo.utau) | ||
| , wspd_mean(mo.vmag_mean) | ||
| , theta_surface(mo.surf_temp) | ||
| , term1(mo.utau * mo.kappa / mo.phi_h()) | ||
| {} | ||
|
|
||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_x(amrex::Real u, amrex::Real /* wspd */) const | ||
| { | ||
| return u / wspd_mean * utau2; | ||
| }; | ||
|
|
||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_y(amrex::Real v, amrex::Real /* wspd */) const | ||
| { | ||
| return v / wspd_mean * utau2; | ||
| }; | ||
|
|
||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_theta(amrex::Real /* wspd */, amrex::Real theta) const | ||
| { | ||
| return term1 * (theta - theta_surface); | ||
| }; | ||
|
|
||
| amrex::Real utau2; | ||
| amrex::Real wspd_mean; | ||
| amrex::Real theta_surface; | ||
| amrex::Real term1; | ||
| }; | ||
|
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||
| struct ShearStressMoeng | ||
| { | ||
| explicit ShearStressMoeng(const amr_wind::MOData& mo) | ||
| : utau2(mo.utau * mo.utau) | ||
| , u_mean(mo.vel_mean[0]) | ||
| , v_mean(mo.vel_mean[1]) | ||
| , wspd_mean(mo.vmag_mean) | ||
| , theta_surface(mo.surf_temp) | ||
| , theta_mean(mo.theta_mean) | ||
| , term1(mo.utau * mo.kappa / (mo.vmag_mean * mo.phi_h())) | ||
| {} | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_x(amrex::Real u, amrex::Real wspd) const | ||
| { | ||
| return ((u - u_mean) * wspd_mean + wspd * u_mean) / | ||
| (wspd_mean * wspd_mean) * utau2; | ||
| }; | ||
|
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||
| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_vel_y(amrex::Real v, amrex::Real wspd) const | ||
| { | ||
| return ((v - v_mean) * wspd_mean + wspd * v_mean) / | ||
| (wspd_mean * wspd_mean) * utau2; | ||
| }; | ||
|
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| AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE amrex::Real | ||
| calc_theta(amrex::Real wspd, amrex::Real theta) const | ||
| { | ||
| const amrex::Real num1 = (theta - theta_mean) * wspd_mean; | ||
| const amrex::Real num2 = (theta_mean - theta_surface) * wspd; | ||
| return term1 * (num1 + num2); | ||
| }; | ||
|
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||
| amrex::Real utau2; | ||
| amrex::Real u_mean; | ||
| amrex::Real v_mean; | ||
| amrex::Real wspd_mean; | ||
| amrex::Real theta_surface; | ||
| amrex::Real theta_mean; | ||
| amrex::Real term1; | ||
| }; | ||
|
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| #endif /* ShearStress_H */ | ||
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May be add doxygen docs and assign them to ABL group?