Add project files.

2026-05-02 16:58:40 +02:00
parent edc3fd9b48
commit 9fc45224af
17 changed files with 915 additions and 0 deletions
--- a/Core/Solver.cs
+++ b/Core/Solver.cs
@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+using FluidSim.Components;
+using FluidSim.Interfaces;
+
+namespace FluidSim.Core
+{
+    public class Solver
+    {
+        private readonly List<Volume0D> _volumes = new();
+        private readonly List<Pipe1D> _pipes = new();
+        private readonly List<Connection> _connections = new();
+
+        public void AddVolume(Volume0D v) => _volumes.Add(v);
+        public void AddPipe(Pipe1D p) => _pipes.Add(p);
+        public void AddConnection(Connection c) => _connections.Add(c);
+
+        public void Step()
+        {
+            // 1. Volumes publish state
+            foreach (var v in _volumes)
+                v.PushStateToPort();
+
+            // 2. Apply orifice boundaries to pipes
+            foreach (var conn in _connections)
+            {
+                if (IsPipePort(conn.PortA) && IsVolumePort(conn.PortB))
+                    ApplyOrifice(conn, conn.PortA, conn.PortB);
+                else if (IsVolumePort(conn.PortA) && IsPipePort(conn.PortB))
+                    ApplyOrifice(conn, conn.PortB, conn.PortA);
+                else if (IsVolumePort(conn.PortA) && IsVolumePort(conn.PortB))
+                    VolumeToVolume(conn);
+            }
+
+            // 3. Pipes simulate
+            foreach (var p in _pipes)
+                p.Simulate();
+
+            // 4. Transfer pipe flows to connected volumes
+            foreach (var conn in _connections)
+            {
+                if (IsPipePort(conn.PortA) && IsVolumePort(conn.PortB))
+                    Transfer(conn.PortA, conn.PortB);
+                else if (IsVolumePort(conn.PortA) && IsPipePort(conn.PortB))
+                    Transfer(conn.PortB, conn.PortA);
+            }
+
+            // 5. Volumes integrate
+            foreach (var v in _volumes)
+                v.Integrate();
+        }
+
+        bool IsVolumePort(Port p) => _volumes.Exists(v => v.Port == p);
+        bool IsPipePort(Port p) => _pipes.Exists(pp => pp.PortA == p || pp.PortB == p);
+        Pipe1D GetPipe(Port p) => _pipes.Find(pp => pp.PortA == p || pp.PortB == p);
+
+        void ApplyOrifice(Connection conn, Port pipePort, Port volPort)
+        {
+            Pipe1D pipe = GetPipe(pipePort);
+            if (pipe == null) return;
+            bool isLeft = pipe.PortA == pipePort;
+
+            double pP = isLeft ? pipe.GetLeftPressure() : pipe.GetRightPressure();
+            double rhoP = isLeft ? pipe.GetLeftDensity() : pipe.GetRightDensity();
+            double uP = 0.0;
+            double pV = volPort.Pressure, rhoV = volPort.Density, uV = 0.0;
+
+            OrificeBoundary.PipeVolumeFlux(pP, rhoP, uP, pV, rhoV, uV, conn, pipe.Area,
+                isLeft, out double mf, out double pf, out double ef);
+            if (isLeft)
+                pipe.SetLeftBoundaryFlux(mf, pf, ef);
+            else
+                pipe.SetRightBoundaryFlux(mf, pf, ef);
+        }
+
+        void VolumeToVolume(Connection conn)
+        {
+            double mdot = OrificeBoundary.MassFlow(conn.PortA.Pressure, conn.PortA.Density,
+                                                    conn.PortB.Pressure, conn.PortB.Density, conn);
+            conn.PortA.MassFlowRate = -mdot;
+            conn.PortB.MassFlowRate = mdot;
+            if (mdot > 0)
+                conn.PortB.SpecificEnthalpy = conn.PortA.SpecificEnthalpy;
+            else if (mdot < 0)
+                conn.PortA.SpecificEnthalpy = conn.PortB.SpecificEnthalpy;
+        }
+
+        void Transfer(Port pipePort, Port volPort)
+        {
+            double mdot = pipePort.MassFlowRate;
+            volPort.MassFlowRate = -mdot;
+            volPort.SpecificEnthalpy = pipePort.SpecificEnthalpy;
+        }
+    }
+}