embedded3 S2-5: the cut wall sat ½(1−α)h inside the body — cross diffusion over the open-part centroid spacing (RTX_E3_DIFFUSION_CENTROID; host + e3_cut.cu, shift tables, point-implicit excess); flat-wall effective-position instrument; DFG 2D-1 ladder tests (device + host); knobs tried and refuted along the way (oblique distance, axis exchange, centroid pressure gradient)

Co-Authored-By: Claude Fable 5.1 <[email protected]>
2026-09-18 10:54:52 -05:00
parent 4c3e58fa27
commit fdfb6da769
12 changed files with 667 additions and 22 deletions
@@ -80,7 +80,11 @@ fn dfg_2d_1_on_the_device() {
    // The cylinder extruded across the width, with samples for the
    // traction route (S2-1).
    solver.set_body(Body::extruded(
-        rtx_cfd::solvers::incompressible::EmbeddedBody::circle(CX, CY, 0.5 * D),
+        rtx_cfd::solvers::incompressible::EmbeddedBody::circle(
+            CX,
+            CY,
+            0.5 * D + env_f("RTX_E3_DFG_DR", 0.0) * h,
+        ),
        lz,
    ));
    let g = Grid::cubic(nx, ny, nz, h);