public override void doBC(double dt)
{
interfunc_dx = Vector1.Distance(core_node.position, core_node.neighbours.Last().position);
interfunc_dt = dt;
previous_time = current_time;
current_time = current_time + dt;
Q_tx_01 = core_node.lumen_sq * core_node.velocity * v_sign[0];
Q_tx_10 = neighbour_node.lumen_sq * neighbour_node.velocity * v_sign[1];
U_tx_10 = neighbour_node.velocity * v_sign[1];
P_tx_01 = core_node.pressure;
P_tx_10 = neighbour_node.pressure;
double sound_speed = Math.Pow(core_node.lumen_sq, 0.25f) * Math.Sqrt(beta_1 / 2.0f / GlobalDefs.BLOOD_DENSITY);
P_tx_11 = (interfunc_dx / sound_speed / dt * P_tx_01 - P_tx_10) / (1 + interfunc_dx / dt / sound_speed);
Q_tx_11 = (interfunc_dx / sound_speed / dt * Q_tx_01 - Q_tx_10) / (1 + interfunc_dx / dt / sound_speed);
A_tx_10 = neighbour_node.lumen_sq;
chrt_frw_left = U_tx_10 + 4 * Math.Pow(A_tx_10, 0.25f) * Math.Sqrt(beta_1 / 2.0f / GlobalDefs.BLOOD_DENSITY);
// A_tx_11 = myMath.NewtonSolver(chrt_function, A_tx_10, 1e-9, 1e-10);
A_tx_11 = calcLumenSq(P_tx_11);
core_node.velocity = Q_tx_11 / A_tx_11 * v_sign[0];
core_node.lumen_sq = A_tx_11;
core_node.pressure = P_tx_11;
//A_tx_11 = calcLumenSq(P_tx_11);
Q_t_0 = Q_t_1;
}
public override void doBC(double dt)
{
if (true)
{
previous_time = current_time;
current_time = current_time + dt;
previous_velocity = current_velocity;
double flux = flux_on_time(current_time);
//Console.WriteLine(flux);
double inlet_lumen = myMath.NewtonSolver(flux_function, core_node.lumen_sq, core_node.lumen_sq_0 * 1e-4f, core_node.lumen_sq_0 * 1e-6);
double U = flux / inlet_lumen;
double dZ = Vector1.Distance(core_node.neighbours.Last().position, core_node.position);
double dUdt = (U - previous_velocity) / dt;
double dUdZ = (core_node.neighbours.Last().velocity *v_sign[1] - U) / dZ;
double visc_term = (double)(GlobalDefs.FRICTION_C * GlobalDefs.BLOOD_VISC * Math.PI * U / GlobalDefs.BLOOD_DENSITY / inlet_lumen);
double P = core_node.neighbours.Last().pressure + (dUdt + U * dUdZ + visc_term) * dZ * GlobalDefs.BLOOD_DENSITY;
core_node.velocity = U * v_sign[0];
core_node.pressure = P;
core_node.lumen_sq = inlet_lumen;
//Console.WriteLine(core_node.velocity);
chrt_back = core_node.velocity - 4 * Math.Pow(core_node.neighbours.Last().lumen_sq, 0.25f) * Math.Sqrt(beta_1 / 2.0f / GlobalDefs.BLOOD_DENSITY);
current_velocity = U;
}
}
public override void doBCsteady(double dt, double pressure)
{
interfunc_dx = Vector1.Distance(core_node.position, core_node.neighbours.Last().position);
interfunc_dt = dt;
previous_time = current_time;
current_time = current_time + dt;
//Console.WriteLine(R1);
//Console.WriteLine(R2);
//Console.WriteLine(C);
Q_t_1 = core_node.lumen_sq * core_node.velocity * v_sign[0];
//tx_ij - i - time moment, j - space point, 1 - current moment (core node), 0 -previous moment (previus point)/
// Euler scheme for ODE integration///
//double dQdt = (Q_t_1 - Q_t_0) / dt;
P_tx_11 = pressure;
P_tx_10 = neighbour_node.pressure;
U_tx_10 = neighbour_node.velocity * v_sign[1];
A_tx_10 = neighbour_node.lumen_sq;
chrt_frw_left = U_tx_01 + 4 * Math.Pow(A_tx_10, 0.25f) * Math.Sqrt(beta_1 / 2.0f / GlobalDefs.BLOOD_DENSITY);
A_tx_11 = myMath.NewtonSolver(chrt_function, A_tx_10, 1e-9, 1e-10);
U_tx_11 = Q_t_1 / A_tx_11;
core_node.velocity = U_tx_11 * v_sign[0];
core_node.lumen_sq = A_tx_11;
core_node.pressure = P_tx_11;
/* core_node.neighbours.Last().pressure = core_node.pressure;
* core_node.neighbours.Last().velocity = core_node.velocity;
* core_node.neighbours.Last().lumen_sq = core_node.lumen_sq;*/
P_tx_01 = P_tx_11;
A_tx_01 = A_tx_11;
U_tx_01 = U_tx_11;
Q_t_0 = Q_t_1;
}
unsafe public override void calcThread(double dt)
{
current_time += dt;
double dz = 0;
curr_dt = dt;
int L = nodes.GetLength(0);
this.nodes2state();
//if (nodes.Last().id == 13234 || nodes.First().id == 13234)
//{
// L = nodes.GetLength(0);
//}
// lumen_sq_old = (double[])lumen_sq.Clone();
#if FAST
unsafe
{
fixed(double *v_ptr = &velocity[0])
{
fixed(double *lum_ptr = &lumen_sq[0])
{
fixed(double *p_ptr = &pressure[0])
{
thread_solver.calc(v_ptr, lum_ptr, p_ptr, dt);
}
}
}
}
#endif
// this.nodes2state();
#if SAFE
double[] velocity_pred = (double[])velocity.Clone();
double[] lumen_sq_pred = (double[])lumen_sq.Clone();
double[] pressure_pred = (double[])pressure.Clone();
for (int i = 1; i < L - 1; i++)
{
dz = Vector1.Distance(nodes[i].position, nodes[i - 1].position);
//dz = 2.5e-3;
velocity_pred[i] = velocity[i] - dt / dz * ((velocity[i] * velocity[i] / 2 + pressure[i] / GlobalDefs.BLOOD_DENSITY + g_energy[i]) - (velocity[i - 1] * velocity[i - 1] / 2 + pressure[i - 1] / GlobalDefs.BLOOD_DENSITY + g_energy[i - 1]));
velocity_pred[i] = velocity_pred[i] - 1.0 / GlobalDefs.BLOOD_DENSITY / lumen_sq[i] * (GlobalDefs.FRICTION_C * viscosity[i] * Math.PI * velocity_pred[i]) * dt;
lumen_sq_pred[i] = lumen_sq[i] - dt / dz * (lumen_sq[i] * velocity[i] - lumen_sq[i - 1] * velocity[i - 1]);
pressure_pred[i] = calcPressure(lumen_sq_pred[i], i);
//Console.WriteLine(i);
}
//for(int i=0; i<L;i++)
//{
// if (nodes[i].blocked == true)
// velocity_pred[i] = 0;
//}
for (int i = 1; i < L - 1; i++)
{
dz = Vector1.Distance(nodes[i].position, nodes[i + 1].position);
//dz = 2.5e-3;
velocity[i] = (velocity[i] + velocity_pred[i]) / 2 - dt / dz / 2 * ((velocity_pred[i + 1] * velocity_pred[i + 1] / 2 + pressure_pred[i + 1] / GlobalDefs.BLOOD_DENSITY + g_energy[i + 1]) - (velocity_pred[i] * velocity_pred[i] / 2 + pressure_pred[i] / GlobalDefs.BLOOD_DENSITY + g_energy[i]));
velocity[i] = velocity[i] - 1.0 / 2.0 / GlobalDefs.BLOOD_DENSITY / lumen_sq[i] * (GlobalDefs.FRICTION_C * viscosity[i] * Math.PI * velocity[i]) * dt;
lumen_sq[i] = (lumen_sq[i] + lumen_sq_pred[i]) / 2 - dt / dz / 2 * (lumen_sq_pred[i + 1] * velocity_pred[i + 1] - lumen_sq_pred[i] * velocity_pred[i]);
pressure[i] = calcPressure(lumen_sq[i], i);
}
//for (int i = 0; i < L; i++)
//{
// if (nodes[i].blocked == true)
// velocity[i] = 0;
//}
if (L == 2)
{
velocity[0] = (velocity[0] + velocity[1]) / 2;
velocity[1] = velocity[0];
pressure[0] = (pressure[0] + pressure[1]) / 2;
pressure[1] = pressure[0];
lumen_sq[0] = (lumen_sq[0] + lumen_sq[1]) / 2;
lumen_sq[1] = lumen_sq[0];
}
if (L > 2)
{
velocity[L - 1] = velocity[L - 2];
velocity[0] = velocity[1];
pressure[L - 1] = pressure[L - 2];
pressure[0] = pressure[1];
lumen_sq[L - 1] = lumen_sq[L - 2];
lumen_sq[0] = lumen_sq[1];
}
#endif
this.state2nodes();
}
public override void doBC(double dt)
{
interfunc_dx = Vector1.Distance(core_node.position, core_node.neighbours.Last().position);
interfunc_dt = dt;
previous_time = current_time;
current_time = current_time + dt;
//Console.WriteLine(core_node.position);
//if (core_node.id == 13234)
//core_node.id = 13234;
Q_t_1 = core_node.lumen_sq * core_node.velocity * v_sign[0];
//tx_ij - i - time moment, j - space point, 1 - current moment (core node), 0 -previous moment (previus point)/
// Euler scheme for ODE integration///
if (core_node.nodetype >= 3)
{
Q_t_1 = 0.0;
}
double dQdt = (Q_t_1 - Q_t_0) / dt;//Console.WriteLine(dQdt);
////////////////////////////////////
// Send flow rate to 1-D steady model
// Wait for answer
// Set pressure
//string flags = " -Qin " + Q_t_1.ToString();
//Process Process = new Process();
//Process.StartInfo.UseShellExecute = false;
//Process.StartInfo.FileName = "./steady_network_solver";
//Process.StartInfo.Arguments = flags;
//Process.StartInfo.CreateNoWindow = true;
//Process.StartInfo.RedirectStandardOutput = true;
//Process.Start();
////q = Process.StandardOutput.ReadLine();
//Process.WaitForExit();
//string Pressure_reading = System.IO.File.ReadAllText("p_in.dat");
//P_tx_11 = Convert.ToDouble(Pressure_reading);
P_tx_10 = neighbour_node.pressure;
U_tx_10 = neighbour_node.velocity * v_sign[1];
A_tx_10 = neighbour_node.lumen_sq;
if (core_node.nodetype >= 3)
{
P_tx_11 = P_tx_10;
}
else
{
P_tx_11 = (Q_t_0 * (1 + R1 / R2) + C * R1 * dQdt + GlobalDefs.OUT_PRESSURE / R2 + P_tx_01 * C / dt) / (C / dt + 1 / R2);
}
//P_tx_11 = (Q_t_0 * (1 + R1 / R2) + C * R1 * dQdt + GlobalDefs.OUT_PRESSURE / R2 + P_tx_01 * C / dt) / (C / dt + 1 / R2);
chrt_frw_left = U_tx_01 + 4 * Math.Pow(A_tx_10, 0.25f) * Math.Sqrt(beta_1 / 2.0f / GlobalDefs.BLOOD_DENSITY);
//if (core_node.nodetype >= 3)
//{
// A_tx_11 = core_node.lumen_sq_0;
//}
//else
//{
// A_tx_11 = myMath.NewtonSolver(chrt_function, A_tx_10, 1e-9, 1e-10);
//}
A_tx_11 = myMath.NewtonSolver(chrt_function, A_tx_10, 1e-9, 1e-10);
U_tx_11 = Q_t_1 / A_tx_11;
core_node.velocity = U_tx_11 * v_sign[0];
core_node.lumen_sq = A_tx_11;
core_node.pressure = P_tx_11;
/* core_node.neighbours.Last().pressure = core_node.pressure;
* core_node.neighbours.Last().velocity = core_node.velocity;
* core_node.neighbours.Last().lumen_sq = core_node.lumen_sq;*/
P_tx_01 = P_tx_11;
A_tx_01 = A_tx_11;
U_tx_01 = U_tx_11;
Q_t_0 = Q_t_1;
}