From 4ec94c97879aafef15f7663135745e4ba61e62cf Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 17 May 2021 00:15:33 +0200
Subject: Extract first public LiterateLB version

---
 tangle/taylor-couette.cu | 75 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 tangle/taylor-couette.cu

(limited to 'tangle/taylor-couette.cu')

diff --git a/tangle/taylor-couette.cu b/tangle/taylor-couette.cu
new file mode 100644
index 0000000..86f739e
--- /dev/null
+++ b/tangle/taylor-couette.cu
@@ -0,0 +1,75 @@
+#include <LLBM/base.h>
+#include <LLBM/bulk.h>
+#include <LLBM/boundary.h>
+
+#include "util/render_window.h"
+#include "util/texture.h"
+#include "util/colormap.h"
+
+#include "util/volumetric_example.h"
+#include "sampler/velocity_norm.h"
+#include "sampler/curl_norm.h"
+#include "sampler/shear_layer.h"
+
+using T = float;
+using DESCRIPTOR = descriptor::D3Q19;
+
+int main() {
+cudaSetDevice(0);
+
+const descriptor::Cuboid<DESCRIPTOR> cuboid(320, 96, 96);
+Lattice<DESCRIPTOR,T> lattice(cuboid);
+
+CellMaterials<DESCRIPTOR> materials(cuboid, [&cuboid](uint3 p) -> int {
+  if (p.x == 0 || p.x == cuboid.nX-1) {
+    return 2;
+  } else {
+    return 1;
+  }
+});
+
+auto inner_cylinder = [cuboid] __host__ __device__ (float3 p) -> float {
+                        float3 q = p - make_float3(0, cuboid.nY/2, cuboid.nZ/2);
+                        return sdf::sphere(make_float2(q.y,q.z), cuboid.nY/T{4.5});
+                      };
+auto geometry = [cuboid,inner_cylinder] __host__ __device__ (float3 p) -> float {
+                  float3 q = p - make_float3(0, cuboid.nY/2, cuboid.nZ/2);
+                  return sdf::add(-sdf::sphere(make_float2(q.y,q.z), cuboid.nY/T{2.14}), inner_cylinder(p));
+                };
+materials.sdf(geometry, 0);
+SignedDistanceBoundary bouzidi(lattice, materials, geometry, 1, 0);
+
+const float wall = 0.2;
+
+bouzidi.setVelocity([cuboid,wall](float3 p) -> float3 {
+  float3 q = p - make_float3(0, cuboid.nY/2, cuboid.nZ/2);
+  if (length(make_float2(q.y,q.z)) < cuboid.nY/T{2.5}) {
+    return wall * normalize(make_float3(0, -q.z, q.y));
+  } else {
+    return make_float3(0);
+  }
+});
+
+auto bulk_mask = materials.mask_of_material(1);
+auto bulk_list = materials.list_of_material(1);
+auto wall_mask = materials.mask_of_material(2);
+auto wall_list = materials.list_of_material(2);
+
+lattice.apply<InitializeO>(bulk_list);
+lattice.apply<InitializeO>(wall_list);
+
+cudaDeviceSynchronize();
+
+VolumetricExample renderer(cuboid);
+renderer.add<VelocityNormS>(lattice, bulk_mask, inner_cylinder);
+renderer.add<ShearLayerVisibilityS>(lattice, bulk_mask, inner_cylinder, make_float3(1,0,0));
+renderer.run([&](std::size_t iStep) {
+  const float tau = 0.55;
+  
+  lattice.apply<BgkCollideO>(bulk_list, tau);
+  lattice.apply<BounceBackO>(wall_list);
+  lattice.apply<BouzidiO>(bouzidi.getCount(), bouzidi.getConfig());
+  
+  lattice.stream();
+});
+}
-- 
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