Add jet, surface and fixed-patch tests and runnable examples

2026-10-15 10:13:49 +08:00
parent ed1a6ee54e
commit cdbb9c42f6
48 changed files with 9267 additions and 210 deletions
@@ -0,0 +1,30 @@
+#include <cstdio>
+#include <initializer_list>
+#define __device__
+#define __forceinline__ inline
+#include "boundary/planar_velocity.cuh"
+
+int main() {
+    const int cx[9]={0,1,-1,0,0,1,-1,1,-1};
+    const int cy[9]={0,0,0,1,-1,1,-1,-1,1};
+    const float w[9]={4.f/9,1.f/9,1.f/9,1.f/9,1.f/9,1.f/36,1.f/36,1.f/36,1.f/36};
+    for (int top : {0,1}) for (float rho : {1.f,1.04f})
+    for (float u : {-.02f,0.f,.02f}) for (float v : {-.01f,-.001f,0.f,.001f,.01f})
+    for (int neq : {0,1}) {
+        float f[9];
+        printf("%d %.9g %.9g %.9g %d\n",top,rho,u,v,neq);
+        for (int i=0;i<9;++i) {
+            float cu=cx[i]*u+cy[i]*v;
+            f[i]=w[i]*rho*(1+3*cu+4.5f*cu*cu-1.5f*(u*u+v*v));
+            f[i]+=neq*.0001f*(i-4);
+            // Unknown inputs must be completely overwritten, never consumed.
+            if (cy[i]==(top?-1:1)) f[i]=-7.f-i;
+            printf("%.9g ",f[i]);
+        }
+        puts("");
+        if (top) reconstruct_top_velocity(f,u,v);
+        else reconstruct_bottom_velocity(f,u,v);
+        for (float value : f) printf("%.9g ",value);
+        puts("");
+    }
+}