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Sediment_kernel.cu
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Sediment_kernel.cu
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//////////////////////////////////////////////////////////////////////////////////
//XBeach_GPU //
//Copyright (C) 2013 Bosserelle //
// //
//This program is free software: you can redistribute it and/or modify //
//it under the terms of the GNU General Public License as published by //
//the Free Software Foundation. //
// //
//This program is distributed in the hope that it will be useful, //
//but WITHOUT ANY WARRANTY; without even the implied warranty of //
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
//GNU General Public License for more details. //
// //
//You should have received a copy of the GNU General Public License //
//along with this program. If not, see <http://www.gnu.org/licenses/>. //
//////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#define pi 3.14159265
// declare texture reference for 2D DECNUM texture
//texture<DECNUM, 2, cudaReadModeElementType> texU;
//texture<DECNUM, 2, cudaReadModeElementType> texV;
//texture<DECNUM, 2, cudaReadModeElementType> texZ;
__global__ void longturb(int nx, int ny, DECNUM dx, DECNUM rho, DECNUM g, DECNUM dt, DECNUM beta, DECNUM * c, DECNUM *kturb, DECNUM * rolthick, DECNUM *dzsdt, DECNUM * uu, DECNUM *vv, DECNUM *hu, DECNUM *hv, int * wetu, int * wetv, DECNUM *h)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM uui[16][16];
__shared__ DECNUM uul[16][16];
__shared__ DECNUM vvi[16][16];
__shared__ DECNUM vvb[16][16];
__shared__ DECNUM kturbi[16][16];
__shared__ DECNUM kturbl[16][16];
__shared__ DECNUM kturbr[16][16];
__shared__ DECNUM kturbb[16][16];
__shared__ DECNUM kturbt[16][16];
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
// use lagrangian velocities
DECNUM kturbu = 0.0f;
DECNUM kturbv = 0.0f;
DECNUM dzsdt_cr = beta*c[i];
DECNUM kkturb;
DECNUM kturbumin, kturbvmin;
DECNUM Sturbu, Sturbv, Sturbumin, Sturbvmin;
DECNUM ksource, rolth;
DECNUM betad = 1.0f;
DECNUM hold = h[i] - dzsdt[i] * dt;
kturbi[tx][ty] = kturb[i];
kturbr[tx][ty] = kturb[xplus + iy*nx];
kturbl[tx][ty] = kturb[xminus + iy*nx];
kturbb[tx][ty] = kturb[ix + yminus*nx];
kturbt[tx][ty] = kturb[ix + yplus*nx];
uui[tx][ty] = uu[i];
uul[tx][ty] = uu[xminus + iy*nx];
vvi[tx][ty] = vv[i];
vvb[tx][ty] = vv[ix + yminus*nx];
// Update roller thickness
rolth = rolthick[i] + dt*(abs(dzsdt[i]) - dzsdt_cr);
rolthick[i] = max(rolth, 0.0f);
// X-direction
kturbu = kturbi[tx][ty] * max(uui[tx][ty], 0.0f) + kturbr[tx][ty] * min(uui[tx][ty], 0.0f);
/*if(uu[i]>0.0f)
{
kturbu=kturb[i];
}
else
{
if (uu[i]<0.0f)
{ kturbu=kturb[xplus+iy*nx];}
else
{ kturbu=0.5f*(kturb[i]+kturb[xplus+iy*nx]);}
}*/
kturbumin = kturbl[tx][ty] * max(uul[tx][ty], 0.0f) + kturbi[tx][ty] * min(uul[tx][ty], 0.0f);
/*if(uu[xminus+iy*nx]>0.0f)
{
kturbumin=kturb[xminus+iy*nx];
}
else
{
if(uu[xminus+iy*nx]<0.0f)
{
kturbumin=kturb[i];
}
else
{
kturbumin=0.5f*(kturb[xminus+iy*nx]+kturb[i]);
}
}*/
Sturbu = kturbu*hu[i] * wetu[i];
Sturbumin = kturbumin*hu[xminus + iy*nx] * wetu[xminus + iy*nx];
// Y-direction
kturbv = kturbi[tx][ty] * max(vvi[tx][ty], 0.0f) + kturbt[tx][ty] * min(vvi[tx][ty], 0.0f);
/*if(vv[i]>0.0f)
{
kturbv=kturb[i];
}
else
{
if(vv[i]<0)
{
kturbv=kturb[ix+yplus*nx];
}
else
{
kturbv=0.5f*(kturb[i]+kturb[ix+yplus*nx]);
}
}*/
kturbvmin = kturbb[tx][ty] * max(vvb[tx][ty], 0.0f) + kturbi[tx][ty] * min(vvb[tx][ty], 0.0f);
/*if(vv[ix+yminus*nx]>0.0f)
{
kturbvmin=kturb[ix+yminus*nx];
}
else
{
if(vv[ix+yminus*nx]<0.0f)
{
kturbvmin=kturb[i];
}
else
{
kturbvmin=0.5f*(kturb[ix+yminus*nx]+kturb[i]);
}
}*/
Sturbv = kturbv*hv[i] * wetv[i];
Sturbvmin = kturbvmin*hv[ix + yminus*nx] * wetv[ix + yminus*nx];
ksource = g*rolthick[i] * beta*c[i]; // only important in shallow water, where c=sqrt(gh)
kkturb = hold*kturb[i] - dt*((Sturbu - Sturbumin) / dx + (Sturbv - Sturbvmin) / dx - (ksource - betad*powf(kturb[i], 1.5f)));
kturb[i] = 0.0f;//max(kkturb,0.0f);
}
}
__global__ void Sbvr(int nx, int ny, DECNUM rho, DECNUM g, DECNUM eps, DECNUM Trep, DECNUM D50, DECNUM D90, DECNUM rhosed, DECNUM ws, DECNUM nuhfac, DECNUM * ueu, DECNUM * vev, DECNUM *H, DECNUM * DR, DECNUM * R, DECNUM * c, DECNUM * hh, DECNUM *urms, DECNUM * ceqsg, DECNUM * ceqbg, DECNUM *Tsg, DECNUM *zom, DECNUM * kturb)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM hhi[16][16];
//__shared__ DECNUM Hi[16][16];
__shared__ DECNUM ueui[16][16];
__shared__ DECNUM ueul[16][16];
__shared__ DECNUM vevi[16][16];
__shared__ DECNUM vevb[16][16];
DECNUM ue, ve;
DECNUM vmags, vmag, ML, Tbore, dcfin, dcf, kb, Urms2;
DECNUM B2, T1, Ucrc, Ucrw, Ucr, Ass, Asb, Cd, ceqb, ceqs;
//DECNUM D50=0.0038;
//DECNUM D90=0.0053;
DECNUM zo = 0.006f;//zom[i];
DECNUM sedcal = 1.0f;
int wetz;
DECNUM bulk = 1.0f;//1.0f;
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
//DECNUM rhosed=2500; //Sediment density
DECNUM drho = (rhosed - rho) / rho;
DECNUM dester = powf(drho*g, 1.0f / 3.0f) / 0.0001f*D50; //1.19e-4 comes from (Kb^2)^1/3 with Kb = 1.3e-6 m2s-2 kinematic viscosity of water
// Calc euler velocities at cell center
hhi[tx][ty] = max(hh[i], 0.01f);;
ueui[tx][ty] = ueu[i];
vevi[tx][ty] = vev[i];
//Hi[tx][ty]=H[i];
ueul[tx][ty] = ueu[xminus + iy*nx];
vevb[tx][ty] = vev[ix + yminus*nx];
__syncthreads;
ue = 0.5*(ueul[tx][ty] + ueui[tx][ty]);
ve = 0.5*(vevb[tx][ty] + vevi[tx][ty]);
//need to check this...
vmags = ue*ue + ve*ve;
vmag = sqrt(vmags);
//Mixing length
ML = max(min(sqrt(2.0f*R[i] * Trep / (rho*c[i])), hhi[tx][ty]), 0.01f);
//Bore period
Tbore = Trep / 4.0f;// should be more complex //to improve later
//Exponential decay of turbulence over time
dcfin = expf(min(hhi[tx][ty], 100.0f) / ML);
dcf = min(1 / (dcfin - 1), 1.0f);
//Short wave turbulence (Breaking):
kb = nuhfac*powf(DR[i] / rho, 0.66666666667f)*dcf;
Urms2 = urms[i] * urms[i] + 1.45f*(kb + kturb[i]);//not been tested yet!!!
DECNUM tsfac = 0.1f;
//DECNUM ws=0.0509f;
DECNUM Tsmin = 0.5f;
Tsg[i] = max(tsfac*hhi[tx][ty] / ws, Tsmin); //should be different for each sediment class
//critical U due to current
//Ucrc=8.5f*pow(D50,0.6f)*log(4.0f*hhi[tx][ty]/D90)/log(10.0f);//Shields
//Critical U due to Waves
//Ucrw=0.95f*pow(1.65f*g,0.57f)*pow(D50,0.43f)*pow(Trep,0.14f);//Komar and Miller 1975
//Critical velocity
//Ucr=B2*Ucrc+(1.0f-B2)*Ucrw;
if (D50 <= 0.0005f)
{
Ucr = 0.19f*powf(D50, 0.1f)*log10f(4.0f*hhi[tx][ty] / D90);
}
else
{
Ucr = 8.50f*powf(D50, 0.6f)*log10f(4.0f*hhi[tx][ty] / D90);
}
//drag coeff
DECNUM hdrag = max(hhi[tx][ty], 10.0f*zo);
Cd = 0.4f / (logf(hdrag / zo) - 1.0f);
Cd = Cd*Cd;
//Bottom sediment
//Asb=0.005f*hhi[tx][ty]*powf(D50/hhi[tx][ty]/(drho*g*D50),1.2f);
Asb = 0.005f*hhi[tx][ty] * powf(1 / hhi[tx][ty] / (drho*g), 1.2f);//simplified from above to limit the propagation of round of error with D50
//Suspended Sediment
Ass = 0.012f*D50*powf(dester, -0.6f) / (powf(drho*g*D50, 1.2f));
//
T1 = vmags + 0.018f / Cd*Urms2;
T1 = min(T1, 100000.0f*g / zom[i] * D50*drho);
T1 = sqrtf(T1);
// Calculate Cequilibrium
if (hhi[tx][ty] > eps)
{
wetz = 1;
}
else
{
wetz = 0;
}
DECNUM T2;
T2 = 0.0f;
if (T1 > Ucr && hhi[tx][ty] > eps)
{
T2 = powf(T1 - Ucr, 2.4f);
}
ceqb = Asb*T2;
ceqb = min(ceqb / hhi[tx][ty], 0.05f); //maximum equilibrium bed concentration
// This should be different for each sediment fraction
ceqbg[i] = (1 - bulk)*ceqb*sedcal*wetz;
ceqs = min(Ass*T2 / hhi[tx][ty], 0.05f);// maximum equilibrium suspended concentration
ceqsg[i] = (ceqs + bulk*ceqb)*sedcal*wetz;
}
}
__global__ void Sednew(int nx, int ny, DECNUM rho, DECNUM g, DECNUM eps, DECNUM Trep, DECNUM D50, DECNUM D90, DECNUM rhosed, DECNUM ws, DECNUM nuhfac, DECNUM * ueu, DECNUM * vev, DECNUM *H, DECNUM * DR, DECNUM * R, DECNUM * c, DECNUM * hh, DECNUM *urms, DECNUM * ceqsg, DECNUM * ceqbg, DECNUM *Tsg, DECNUM *zom, DECNUM * kturb)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM hhi[16][16];
//__shared__ DECNUM Hi[16][16];
__shared__ DECNUM ueui[16][16];
__shared__ DECNUM ueul[16][16];
__shared__ DECNUM vevi[16][16];
__shared__ DECNUM vevb[16][16];
DECNUM ue, ve;
DECNUM vmags, vmag, ML, Tbore, dcfin, dcf, kb, Urms2;
DECNUM B2, T1, Ucrc, Ucrw, Ucr, Ass, Asb, Cd, ceqb, ceqs;
//DECNUM D50=0.0038;
//DECNUM D90=0.0053;
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
DECNUM zo = zom[i];
DECNUM sedcal = 1.0f;
int wetz;
DECNUM bulk = 1.0f;
//DECNUM rhosed=25000; //Sediment density
DECNUM drho = (rhosed - rho) / rho;
DECNUM dester = powf(drho*g, 1.0f / 3.0f) / 0.0001*D50;
// Calc euler velocities at cell center
hhi[tx][ty] = hh[i];
ueui[tx][ty] = ueu[i];
vevi[tx][ty] = vev[i];
//Hi[tx][ty]=H[i];
ueul[tx][ty] = ueu[xminus + iy*nx];
vevb[tx][ty] = vev[ix + yminus*nx];
__syncthreads;
ue = 0.5*(ueul[tx][ty] + ueui[tx][ty]);
ve = 0.5*(vevb[tx][ty] + vevi[tx][ty]);
//need to check this...
vmags = ue*ue + ve*ve;
vmag = sqrt(vmags);
//Mixing length
ML = max(min(sqrt(2 * R[i] * Trep / (rho*c[i])), hhi[tx][ty]), 0.01f);
//Bore period
Tbore = Trep / 4.0f;// should be more complex //to improve later
//Exponential decay of turbulence over time
dcfin = exp(min(hhi[tx][ty], 100.0f) / ML);
dcf = min(1 / (dcfin - 1), 1.0f);
//Short wave turbulence (Breaking):
kb = nuhfac*powf(DR[i] / rho, 0.6666667f)*dcf;
Urms2 = urms[i] * urms[i] + 1.45f*(kb + kturb[i]);//not been tested yet!!!
//DECNUM dester=rhosed*D50;//dester=25296*D50;
//DECNUM dster=(drho*g/1.0f-12)**onethird*s%D50(jg)
DECNUM tsfac = 0.1f;
//DECNUM ws=0.043f;
DECNUM Tsmin = 0.5f;
Tsg[i] = max(tsfac*hhi[tx][ty] / ws, Tsmin); //should be different for each sediment class
//DECNUM Ucrc,Ucrw;
if (D50 <= 0.0005)
{
Ucrc = powf(0.19f*D50, 0.10f)*log10f(4.0f*hhi[tx][ty] / D90);
Ucrw = powf(0.24f*drho*g, 0.66f)*powf(D50*Trep, 0.33);
}
if (D50<0.002 && D50>0.0005)
{
//critical U due to current
Ucrc = 8.5f*powf(D50, 0.6f)*log(4.0f*hhi[tx][ty] / D90) / log(10.0f);//Shields
//Critical U due to Waves
Ucrw = 0.95f*powf(1.65f*g, 0.57f)*powf(D50, 0.43f)*powf(Trep, 0.14f);//Komar and Miller 1975
}
B2 = vmag / max(vmag + sqrtf(Urms2), eps);
//Critical velocity
Ucr = B2*Ucrc + (1.0f - B2)*Ucrw;
//Bottom sediment
Asb = 0.015f*hhi[tx][ty] * powf(D50 / hhi[tx][ty], 1.2f) / powf(drho*g*D50, 0.75f);
//Suspended Sediment
Ass = 0.012f*D50*powf(dester, -0.6f) / (powf(drho*g*D50, 1.2f));
//
T1 = vmags + 0.64f*Urms2;
T1 = min(T1, 100000 * g / zom[i] * D50*drho);
T1 = sqrtf(T1);
// Calculate Cequilibrium
if (hhi[tx][ty] > eps)
{
wetz = 1;
}
else
{
wetz = 0;
}
DECNUM T2;
T2 = 0.0f;
if (T1 > Ucr && hhi[tx][ty] > eps)
{
T2 = powf((T1 - Ucr), 1.5f);
ceqb = Asb*T2;
ceqb = min(ceqb / hhi[tx][ty], 0.05f); //maximum equilibrium bed concentration
// This should be different for each sediment fraction
T2 = powf((T1 - Ucr), 2.4f);
ceqs = min(Ass*T2 / hhi[tx][ty], 0.05f);// maximum equilibrium suspended concentration
}
ceqbg[i] = (1 - bulk)*ceqb*sedcal*wetz;
ceqsg[i] = (ceqs + bulk*ceqb)*sedcal*wetz;
}
}
__global__ void Rvr(int nx, int ny, DECNUM Trep, DECNUM facsk, DECNUM facas, DECNUM * H, DECNUM * hh, DECNUM * urms, DECNUM * c, DECNUM *ua)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
if (ix < nx && iy < ny)
{
// time averaged flows due to wave asymmetry
DECNUM m1 = 0.0f; // a = 0
DECNUM m2 = 0.7939f; // b = 0.79 +/- 0.023
DECNUM m3 = -0.6065f; // c = -0.61 +/- 0.041
DECNUM m4 = 0.3539f; // d = -0.35 +/- 0.032
DECNUM m5 = 0.6373f; // e = 0.64 +/- 0.025
DECNUM m6 = 0.5995f; // f = 0.60 +/- 0.043
DECNUM alpha = -1.0f*log10(exp(1.0f)) / m4;
DECNUM beta = exp(m3 / m4);
DECNUM k = 2 * pi / (c[i] * Trep);
DECNUM Ur, Bm, B1, Sk, As;
// if (abs(facua)>0.d0f)
// {
Ur = 3.0f / 8.0f*sqrt(2.0f)*H[i] * k / powf(k*hh[i], 3.0f); //Ursell number
Ur = max(Ur, 0.00001f);
Bm = m1 + (m2 - m1) / (1.0f + beta*powf(Ur, alpha)); //Boltzmann sigmoid (eq 6)
B1 = (-90.0f + 90.0f*tanh(m5 / powf(Ur, m6)))*pi / 180.0f;
Sk = Bm*cos(B1); //Skewness (eq 8)
As = Bm*sin(B1); //Asymmetry(eq 9)
ua[i] = (facsk*Sk - facas*As)*urms[i];
// }
}
}
__global__ void Erosus(int nx, int ny, DECNUM dt, DECNUM morfac, DECNUM por, DECNUM * hh, DECNUM * ceqsg, DECNUM * ceqbg, DECNUM *Tsg, DECNUM * facero, DECNUM * structdepth)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
if (ix < nx && iy < ny)
{
//DECNUM morfac=0.0f; //Morphological factor 0.0= no bed update 1.0= normal bed update >1.0= enhance bed update
//DECNUM por=0.4f;
DECNUM pbbed = 1.0f;// sand fraction everywhere
DECNUM exp_ero;
//to be done for each sediment class
exp_ero = morfac*dt / (1.0f - por)*hh[i] * (ceqsg[i] * pbbed / Tsg[i] + ceqbg[i] * pbbed / dt);
facero[i] = min(1.0f, structdepth[i] * pbbed / max(0.000001f, exp_ero)); // limit erosion to available sediment on top
}
}
__global__ void Susp(int nx, int ny, DECNUM dx, DECNUM eps, DECNUM nuh, DECNUM nuhfac, DECNUM rho, DECNUM sus, DECNUM bed, DECNUM * ueu, DECNUM * vev, DECNUM * uu, DECNUM * uvg, DECNUM * hug, DECNUM * vv, DECNUM *vug, DECNUM *hvg, DECNUM * zb, DECNUM *h, DECNUM * DR, DECNUM * C, DECNUM * ceqbg, DECNUM * Sus, DECNUM * Svs, DECNUM * Sub, DECNUM * Svb, DECNUM * thetamean, DECNUM * ua)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
DECNUM cu, cv, Dc, dcsdx, dcsdy, hu, hv;
DECNUM dzbdx, dzbdy;
DECNUM wetu, wetv;
DECNUM vmagu, vmagv;
DECNUM uau, uav;
DECNUM uv, vu;
DECNUM cub, cvb;
//DECNUM sus=1.0f;
//DECNUM bed=1.0f;
DECNUM pbbed = 1.0f; // WARNING sand fraction every where
DECNUM facsl = 1.6f; // between 0 and 1.6 tke into account the bed slope in bed load calculations
DECNUM urep, vrep;
__shared__ DECNUM cci[16][16];
__shared__ DECNUM ccr[16][16];
__shared__ DECNUM cct[16][16];
__shared__ DECNUM cbi[16][16];
__shared__ DECNUM cbr[16][16];
__shared__ DECNUM cbt[16][16];
__shared__ DECNUM hhi[16][16];
__shared__ DECNUM zbi[16][16];
__shared__ DECNUM zbr[16][16];
__shared__ DECNUM zbt[16][16];
__shared__ DECNUM uui[16][16];
__shared__ DECNUM vvi[16][16];
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
hhi[tx][ty] = h[i];
zbi[tx][ty] = zb[i];
zbr[tx][ty] = zb[xplus + iy*nx];
zbt[tx][ty] = zb[ix + yplus*nx];
cci[tx][ty] = C[i];
ccr[tx][ty] = C[xplus + iy*nx];
cct[tx][ty] = C[ix + yplus*nx];
cbi[tx][ty] = pbbed*ceqbg[i];
cbr[tx][ty] = pbbed*ceqbg[xplus + iy*nx];
cbt[tx][ty] = pbbed*ceqbg[ix + yplus*nx];
uui[tx][ty] = uu[i];
vvi[tx][ty] = vv[i];
__syncthreads;
uau = 0.5*cosf(thetamean[i])*(ua[i] + ua[xplus + iy*nx]);
uav = 0.5*sinf(thetamean[i])*(ua[xplus + iy*nx] + ua[i]);
uv = uvg[i];//0.25f*(uul[tx][ty]+uui[tx][ty]+uutl[tx][ty]+uut[tx][ty]);
vu = vug[i];//0.25f*(vvb[tx][ty]+vvi[tx][ty]+vvbr[tx][ty]+vvr[tx][ty]);
urep = ueu[i] + uau;
vmagu = sqrtf(powf((uui[tx][ty] + uau), 2.0f) + powf((vu + uav), 2.0f));
uau = 0.5*cosf(thetamean[i])*(ua[i] + ua[ix + yplus*nx]);
uav = 0.5*sinf(thetamean[i])*(ua[ix + yplus*nx] + ua[i]);
vrep = vev[i] + uav;
vmagv = sqrtf(powf(uv + uau, 2.0f) + powf(vvi[tx][ty] + uav, 2.0f));
dzbdx = -1.0f*(zbr[tx][ty] - zbi[tx][ty]) / dx;
dzbdy = -1.0f*(zbt[tx][ty] - zbi[tx][ty]) / dx;
hu = hug[i];//0.50f*(hhi[tx][ty]+hhr[tx][ty]);
hv = hvg[i];//0.50f*(hhi[tx][ty]+hht[tx][ty]);
wetu = 0.0f;
wetv = 0.0f;
if (hu > eps)
{
wetu = 1.0f;
}
if (hv > eps)
{
wetv = 1.0f;
}
if (urep > 0.0f)
{
cu = cci[tx][ty];
cub = cbi[tx][ty];
}
else
{
if (urep < 0.0f)
{
cu = ccr[tx][ty];
cub = cbr[tx][ty];
}
else
{
cu = 0.50f*(cci[tx][ty] + ccr[tx][ty]);
cub = 0.50f*(cbi[tx][ty] + cbr[tx][ty]);
}
}
dcsdx = (ccr[tx][ty] - cci[tx][ty]) / dx;
if (vrep > 0.0f)
{
cv = cci[tx][ty];
cvb = cbi[tx][ty];
//cvb(i,j)=par%thetanum*pbbed(i,j,1,jg)*ceqbg(i,j,jg)+(1.d0-par%thetanum)*pbbed(i,min(j+1,ny),1,jg)*ceqbg(i,min(j+1,ny),jg)
}
else
{
if (vrep < 0.0f)
{
cv = cct[tx][ty];
cvb = cbt[tx][ty];
//cvb(i,j)=par%thetanum*pbbed(i,j+1,1,jg)*ceqbg(i,j+1,jg)+(1.d0-par%thetanum)*pbbed(i,max(j,2),1,jg)*ceqbg(i,max(j,2),jg)
}
else
{
cv = 0.50f*(cci[tx][ty] + cct[tx][ty]);
cvb = 0.50f*(cbi[tx][ty] + cbt[tx][ty]);
//cvb(i,j)=0.5d0*(pbbed(i,j,1,jg)*ceqbg(i,j,jg)+pbbed(i,j+1,1,jg)*ceqbg(i,j+1,jg))
}
}
dcsdy = (cct[tx][ty] - cci[tx][ty]) / dx;
Dc = nuh + nuhfac*hhi[tx][ty] * powf(DR[i] / rho, 1.0f / 3.0f);
Sus[i] = sus*(cu*urep*hu - Dc*hu*dcsdx - facsl*cu*vmagu*hu*dzbdx)*wetu;
Svs[i] = sus*(cv*vrep*hv - Dc*hv*dcsdy - facsl*cv*vmagv*hv*dzbdy)*wetv;
Sub[i] = bed*(cub*urep*hu - facsl*cub*vmagu*hu*dzbdx)*wetu;
Svb[i] = bed*(cvb*vrep*hv - facsl*cvb*vmagv*hv*dzbdy)*wetv;
}
}
__global__ void Conc(int nx, int ny, DECNUM dx, DECNUM dt, DECNUM eps, DECNUM * hh, DECNUM * C, DECNUM * ceqsg, DECNUM *Tsg, DECNUM *facero, DECNUM * ero, DECNUM * depo, DECNUM * Sus, DECNUM *Svs)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM Susi[16][16];
__shared__ DECNUM Susl[16][16];
__shared__ DECNUM Svsi[16][16];
__shared__ DECNUM Svsb[16][16];
__shared__ DECNUM hhi[16][16];
DECNUM cs, dsusdx, dsvsdy, wetz;
DECNUM Pbed = 1.0f;
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
hhi[tx][ty] = hh[i];
Susi[tx][ty] = Sus[i];
Susl[tx][ty] = Sus[xminus + iy*nx];
Svsi[tx][ty] = Svs[i];
Svsb[tx][ty] = Svs[ix + yminus*nx];
__syncthreads;
wetz = 0.0f;
if (hhi[tx][ty] > eps)
{
wetz = 1.0f;
}
ero[i] = facero[i] * hhi[tx][ty] * ceqsg[i] * Pbed / Tsg[i];
dsusdx = (Susi[tx][ty] - Susl[tx][ty]) / dx;
dsvsdy = (Svsi[tx][ty] - Svsb[tx][ty]) / dx;
cs = (dt*Tsg[i]) / (dt + Tsg[i])*(hhi[tx][ty] * C[i] / dt - (dsusdx + dsvsdy - ero[i]))*wetz;
cs = max(cs, 0.0f);
cs = min(cs, 0.1f*hhi[tx][ty]);
depo[i] = cs / Tsg[i];
//cs=cs/hh[i];
C[i] = cs / hh[i];
}
}
__global__ void CClatbnd(int nx, int ny, DECNUM eps, DECNUM * hh, DECNUM * C)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM cci[16][16];
__shared__ DECNUM cct[16][16];
__shared__ DECNUM ccb[16][16];
__shared__ DECNUM ccr[16][16];
//cci[tx][ty]=C[i];
//cct[tx][ty]=C[ix+yplus*nx];
//ccb[tx][ty]=C[ix+yminus*nx];
//ccr[tx][ty]=C[xplus+iy*nx];
//__syncthreads;
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
if (iy == 0)
{
C[i] = C[ix + yplus*nx];
}
if (iy == ny - 1)
{
C[i] = C[ix + yminus*nx];
}
if (ix == 0)
{
C[i] = 0.0f;//ccr[tx][ty];
}
}
}
__global__ void hardlayer(int nx, int ny, DECNUM dx, DECNUM dt, DECNUM * Sub, DECNUM * Svb, DECNUM * Sout, int * indSub, int * indSvb)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM Subi[16][16];
__shared__ DECNUM Subl[16][16];
__shared__ DECNUM Svbi[16][16];
__shared__ DECNUM Svbb[16][16];
__shared__ DECNUM Souti[16][16];
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
Subi[tx][ty] = Sub[i];
Subl[tx][ty] = Sub[xminus + iy*nx];
Svbi[tx][ty] = Svb[i];
Svbb[tx][ty] = Svb[ix + yminus*nx];
Souti[tx][ty] = 0.0f;
indSub[i] = 0;
indSvb[i] = 0;
if (Subi[tx][ty] > 0.0f) // ! bed load u-direction
{
indSub[i] = 1;
Souti[tx][ty] = Souti[tx][ty] + Subi[tx][ty] * dx;
}
if (Svbi[tx][ty] > 0.0f) // ! bed load v-direction
{
indSvb[i] = 1;
Souti[tx][ty] = Souti[tx][ty] + Svbi[tx][ty] * dx;
}
// fluxes at i-1,j
if (Subl[tx][ty] < 0.0f) // ! bed load u-direction
{
Souti[tx][ty] = Souti[tx][ty] - Subl[tx][ty] * dx;
}
// fluxes at i,j-1
if (Svbb[tx][ty] < 0.0f) // ! bed load v-direction
{
Souti[tx][ty] = Souti[tx][ty] - Svbb[tx][ty] * dx;
}
Sout[i] = Souti[tx][ty];
}
}
__global__ void bedupdate(int nx, int ny, DECNUM eps, DECNUM dx, DECNUM dt, DECNUM morfac, DECNUM por, DECNUM * hh, DECNUM * ero, DECNUM * depo, DECNUM * Sub, DECNUM * Svb, DECNUM * Sout, int * indSub, int * indSvb, DECNUM * zb, DECNUM *ddzb, DECNUM * structdepth)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
__shared__ DECNUM Subi[16][16];
__shared__ DECNUM Subl[16][16];
__shared__ DECNUM Svbi[16][16];
__shared__ DECNUM Svbb[16][16];
__shared__ int indSubi[16][16];
__shared__ int indSubl[16][16];
__shared__ int indSvbi[16][16];
__shared__ int indSvbb[16][16];
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
DECNUM oldzb = zb[i];
DECNUM fac;
DECNUM Savailable;
DECNUM pbbed = 1.0f;
Subi[tx][ty] = Sub[i];
Subl[tx][ty] = Sub[xminus + iy*nx];
Svbi[tx][ty] = Svb[i];
Svbb[tx][ty] = Svb[ix + yminus*nx];
indSubi[tx][ty] = indSub[i];
indSubl[tx][ty] = indSub[xminus + iy*nx];
indSvbi[tx][ty] = indSvb[i];
indSvbb[tx][ty] = indSvb[ix + yminus*nx];
__syncthreads;
Savailable = structdepth[i] * pbbed / morfac / dt*(1.0f - por)*dx*dx;
// ! reduction factor for cell outgoing sediment transports
fac = 1.0f;
if (Sout[i] > 0.0f)
{
fac = min(1.0f, Savailable / Sout[i]);
}
if (fac < 1.0f)
{
Subi[tx][ty] = fac*indSubi[tx][ty] * Subi[tx][ty] + (1 - indSubi[tx][ty])*Subi[tx][ty];
Subl[tx][ty] = fac*(1 - indSubl[tx][ty])*Subl[tx][ty] + indSubl[tx][ty] * Subl[tx][ty];
Svbi[tx][ty] = fac*indSvbi[tx][ty] * Svbi[tx][ty] + (1 - indSvbi[tx][ty])*Svbi[tx][ty];
Svbb[tx][ty] = fac*(1 - indSvbb[tx][ty])*Svbb[tx][ty] + indSvbb[tx][ty] * Svbb[tx][ty];
}
DECNUM dzg;
dzg = morfac*dt / (1.0f - por)*(ero[i] - depo[i] /*+ (Subi[tx][ty]-Subl[tx][ty])/dx + (Svbi[tx][ty]-Svbb[tx][ty])/dx*/);
zb[i] = zb[i] + dzg;
hh[i] = hh[i] + dzg;
ddzb[i] = -1 * dzg;
structdepth[i] = structdepth[i] - dzg;
}
}
__global__ void zblatbnd(int nx, int ny, DECNUM * F)
{
unsigned int ix = blockIdx.x*blockDim.x + threadIdx.x;
unsigned int iy = blockIdx.y*blockDim.y + threadIdx.y;
unsigned int i = ix + iy*nx;
int tx = threadIdx.x;
int ty = threadIdx.y;
//__shared__ DECNUM Fi[16][16];
//__shared__ DECNUM Ft[16][16];
//__shared__ DECNUM Fb[16][16];
//__shared__ DECNUM Fr[16][16];
if (ix < nx && iy < ny)
{
unsigned int xminus = mminus(ix, nx);
unsigned int xplus = pplus(ix, nx);
unsigned int yminus = mminus(iy, ny);
unsigned int yplus = pplus(iy, ny);
//Fi[tx][ty]=F[i];
//Ft[tx][ty]=
//Fb[tx][ty]=F[ix+yminus*nx];
//Fr[tx][ty]=F[xplus+iy*nx];
__syncthreads;
//F[i]=Fi[tx][ty];
if (iy == 0)