db/d07/hip_2cai__sagaut__model__ii__kernel_8h_source.html

#ifndef CAI_SAGAUT_MODEL_II_KERNEL_H

#define CAI_SAGAUT_MODEL_II_KERNEL_H


/*

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     contributors may be used to endorse or promote products derived

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 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

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*/


#include <cfloat>

#include <algorithm>

#include <cmath>


template<typename T>


__global__ void cai_sagaut_model_ii_compute(const T * __restrict__ u_d,

                                           const T * __restrict__ v_d,

                                           const T * __restrict__ w_d,

                                           const T * __restrict__ n_x_d,

                                           const T * __restrict__ n_y_d,

                                           const T * __restrict__ n_z_d,

                                           const T * __restrict__ nu_d,

                                           const T * __restrict__ rho_w_d,

                                           const T * __restrict__ h_d,

                                           T * __restrict__ tau_x_d,

                                           T * __restrict__ tau_y_d,

                                           T * __restrict__ tau_z_d,

                                           const int n_nodes,

                                           const T kappa,

                                           const T B,

                                           const T p,

                                           const T s) {

  const int idx = blockIdx.x * blockDim.x + threadIdx.x;

  const int str = blockDim.x * gridDim.x;

  const T one = static_cast<T>(1.0);

  const T eps = (sizeof(T) == sizeof(float)) ?

    static_cast<T>(FLT_EPSILON) :

    static_cast<T>(DBL_EPSILON);

  const T e_const = exp(kappa * B);


  for (int i = idx; i < n_nodes; i += str) {

    T ui = u_d[i];

    T vi = v_d[i];

    T wi = w_d[i];

    const T rho = rho_w_d[i];

    const T nx = n_x_d[i];

    const T ny = n_y_d[i];

    const T nz = n_z_d[i];


    const T normu = ui * nx + vi * ny + wi * nz;

    ui -= normu * nx;

    vi -= normu * ny;

    wi -= normu * nz;


    const T magu = sqrt(ui * ui + vi * vi + wi * wi);


    if (magu < eps) {

      tau_x_d[i] = static_cast<T>(0.0);

      tau_y_d[i] = static_cast<T>(0.0);

      tau_z_d[i] = static_cast<T>(0.0);

      continue;

    }


    const T rey = magu * h_d[i] / nu_d[i];

    const T blend = exp(-pow(rey / s, p));

    const T warg = kappa * e_const * rey;

    const T a = one /

      (one + static_cast<T>(0.5) * log(one + warg));

    T wlam = log(one + a * warg);

    wlam = wlam / (one + wlam) * (one + log(warg / wlam));

    const T up = blend * sqrt(rey) +

      (one - blend) * wlam / kappa;

    const T utau = magu / (up + eps);


    tau_x_d[i] = -rho * utau * utau * ui / (magu + eps);

    tau_y_d[i] = -rho * utau * utau * vi / (magu + eps);

    tau_z_d[i] = -rho * utau * utau * wi / (magu + eps);

  }

}


#endif

ale_add_kinematics_kernel
__global__ void ale_add_kinematics_kernel(const int n, T *__restrict__ wx, T *__restrict__ wy, T *__restrict__ wz, const T *__restrict__ x_ref, const T *__restrict__ y_ref, const T *__restrict__ z_ref, const T *__restrict__ phi, const T *__restrict__ x, const T *__restrict__ y, const T *__restrict__ z, const kinematics_params_t kin_params)
Definition ale_kinematics_kernel.h:52

i
const int i
Definition ax_helm_full_kernel.h:95

cai_sagaut_model_ii_compute
__global__ void cai_sagaut_model_ii_compute(const T *__restrict__ u_d, const T *__restrict__ v_d, const T *__restrict__ w_d, const T *__restrict__ n_x_d, const T *__restrict__ n_y_d, const T *__restrict__ n_z_d, const T *__restrict__ nu_d, const T *__restrict__ rho_w_d, const T *__restrict__ h_d, T *__restrict__ tau_x_d, T *__restrict__ tau_y_d, T *__restrict__ tau_z_d, const int n_nodes, const T kappa, const T B, const T p, const T s)
Definition cai_sagaut_model_ii_kernel.h:67