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Introduced automatic sub stepping and pipe cell count

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max
2026-05-03 00:20:17 +02:00
parent 2c338ad7d9
commit 3926ed7ef9
2 changed files with 181 additions and 85 deletions
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24
Core/Simulation.cs
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@@ -19,15 +19,14 @@ namespace FluidSim.Core
dt = 1.0 / sampleRate;
double V = 5.0 * Units.L;
volA = new Volume0D(V, 1.1 * Units.atm, Units.Celsius(20), sampleRate);
volA = new Volume0D(V, 2.0 * Units.atm, Units.Celsius(20), sampleRate);
volB = new Volume0D(V, 1.0 * Units.atm, Units.Celsius(20), sampleRate);
double length = 150 * Units.mm;
double diameter = 25 * Units.mm;
double area = Units.AreaFromDiameter(25, Units.mm);
int nCells = 10;
pipe = new Pipe1D(length, area, nCells, sampleRate);
pipe = new Pipe1D(length, area, sampleRate);
pipe.SetUniformState(volA.Density, 0.0, volA.Pressure);
pipe.FrictionFactor = 0.02;
@@ -54,13 +53,30 @@ namespace FluidSim.Core
public static void Log()
{
if (stepCount <= 50 || stepCount % 200 == 0)
bool logPipe = true;
if ((stepCount <= 10 || (stepCount <= 1000 && stepCount % 100 == 0)) || stepCount % 1000 == 0 && stepCount < 10000)
{
// Summary line
Console.WriteLine(
$"t = {time * 1e3:F3} ms Step {stepCount:D4}: " +
$"PA = {volA.Pressure / 1e5:F6} bar, " +
$"PB = {volB.Pressure / 1e5:F6} bar, " +
$"FlowA = {pipe.PortA.MassFlowRate * 1e3:F2} g/s");
// Per‑cell state
if (logPipe && stepCount <= 1000)
{
int n = pipe.GetCellCount();
for (int i = 0; i < n; i++)
{
double rho = pipe.GetCellDensity(i);
double p = pipe.GetCellPressure(i);
double u = pipe.GetCellVelocity(i);
Console.WriteLine(
$" Cell {i,2}: ρ={rho,8:F4} kg/m³, p={p,10:F2} Pa, u={u,8:F3} m/s");
}
}
}
}
}