{"slug":"fluid-vortices","title":{"ja":"流体の渦","en":"Fluid vortices"},"summary":{"ja":"障害物の後ろに互い違いの渦が並ぶ流れ（カルマン渦列）を、流れに沿う光の線で描く。","en":"A flow shedding alternating vortices behind an obstacle (a Kármán vortex street), drawn with glowing streamlines."},"categories":["art","motion"],"subAspects":["generative.technique"],"aspects":["generative"],"tags":["fluid","vortex","karman-vortex-street","streamlines"],"palette":[{"name":"Obsidian","hex":"#06070D","ratio":0.76},{"name":"Cyan","hex":"#36E2F2","ratio":0.1},{"name":"Neon magenta","hex":"#F04BB4","ratio":0.1},{"name":"Deep indigo","hex":"#2A2A7A","ratio":0.04}],"keywords":["Kármán vortex street","fluid simulation","streamlines","vortex shedding","flow visualization"],"traits":{"en":["A round obstacle sits on the left; the flow passes it from left to right","Behind it, vortices form two staggered rows that spin in opposite directions","Thin streamlines curl around each vortex; one sense of rotation is magenta, the other cyan","Glowing lines and particles are drawn with additive blending on a near-black background, so overlaps get brighter and bloom","In motion, the vortices drift downstream while the streamlines flow"],"ja":["左に丸い障害物があり、流れは左から右へその横を通る","その後ろに、逆向きに回る渦が互い違いに2列並ぶ","細い流線が渦のまわりで巻き、片方の回転はマゼンタ、もう片方はシアン","線と粒子は、ほぼ黒の地に加算合成で描き、重なる所ほど明るくにじむ","動きでは、流線が流れながら渦が下流へ進む"]},"prompt":"Fluid vortices: a Kármán vortex street behind a round obstacle on the left, two staggered rows of counter-rotating vortices drawn with thin glowing streamlines that curl around each vortex, magenta for one sense of rotation and cyan for the other, on a near-black background with additive blending. As video, the vortices drift downstream.","negativePrompt":"ocean photo, smoke photo, turbulent noise without structure, white background, cartoon waves","contrasts":[],"images":[],"references":[{"label":"py5-media-art — kinetic_navier_stokes_karman_vortex_street_2d","url":"https://github.com/asamiile/py5-media-art/tree/main/sketch/kinetic_navier_stokes_karman_vortex_street_2d"},{"label":"py5-media-art — fluid_dynamics","url":"https://github.com/asamiile/py5-media-art/tree/main/sketch/fluid_dynamics"}],"links":{"page":{"ja":"https://visual-gallery.asami.tokyo/ja/styles/fluid-vortices","en":"https://visual-gallery.asami.tokyo/en/styles/fluid-vortices"},"json":"https://visual-gallery.asami.tokyo/api/v1/styles/fluid-vortices","markdown":"https://visual-gallery.asami.tokyo/api/v1/styles/fluid-vortices/md"}}