embedded3: cut predictor convection carries ρ (host + e3_cut.cu; density-scaling pin); operator load route includes the wall exchange (exchange.rs); reconstructed_parts, probe aperture floor knob; dfg_split diagnostic test

Co-Authored-By: Claude Fable 5.1 <[email protected]>
2026-09-18 03:59:57 -05:00
parent 680041d63d
commit f6add276c0
11 changed files with 454 additions and 9 deletions
@@ -176,7 +176,8 @@ __device__ double cut_face_update(const E3Params& g, const E3Ptrs& f, const E3Cu
        if (f_dn1 >= 0) diff -= mu * g_minus * a_d * (u0 - dn1) / h[d];
        else if (sides[d][0] == SIDE_VELOCITY) diff -= mu * g_minus * a_d * (u0 - beyond_m) / (0.5 * h[d]);
    }
-    conv -= mass_out * u0;
+    /* The mass fluxes above are volume fluxes: the momentum flux carries rho. */
+    conv = rho * (conv - mass_out * u0);
    int cpi = cut_cell(g, cp[0], cp[1], cp[2]);
    int cmi = cut_cell(g, cm[0], cm[1], cm[2]);
    double p_plus = cpi >= 0 ? f.p[cpi] : 0.0;