{"id":525,"date":"2022-10-07T15:41:35","date_gmt":"2022-10-07T06:41:35","guid":{"rendered":"https:\/\/lfc.media-creations.org\/?page_id=525"},"modified":"2022-12-07T15:04:49","modified_gmt":"2022-12-07T06:04:49","slug":"doc-page1-en","status":"publish","type":"page","link":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/research-project-en\/r-page-en\/doc-page1-en.html","title":{"rendered":"Color PIV"},"content":{"rendered":"\n

Particle Image Velocimetry (PIV) has advanced to three-dimensional three-component velocity vector field measurements in the last two decades. Among several types of 3D PIVs, use of color volumetric illumination allows a single-camera 3D measurement. Our laboratory developed two different kinds of Color PIV. One is Color PIV applicable to wind tunnel experiments, i.e. aerodynamic studies. This method relies on color decontamination [1] for smoke images that have particle-per-pixel value higher than unity. We applied this technique to engineering researches including 3D wake flow diagnosis for a delta wing and turbulent boundary layer subject to high heat transfer. The other technique is Color PTV (Particle Tracking Velocimetry) good for liquid flow measurements. Use of structured volumetric illumination [2] [3] and animation control [4] for the color-coding greatly improved the measurement performance. The technique was applied for rotating turbines, thermal convection, container\u2019s mixing, and flow structures around moving objects. Some of them includes machine-learning for colored opto-geometric calibration [5] to highly improve the measurement accuracy.<\/p>\n\n\n\n

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  1. Murai, Yumoto et al. Experiments in Fluids, 62, 231 (2021)<\/li>\n
  2. Park, Yamagishi et al. Experiments in Fluids, 62, 70 (2021)<\/li>\n
  3. Park, Saito et al. Experimental Thermal and Fluid Science, 109, 109919 (2019)<\/li>\n
  4. Watamura, Tasaka, Murai. Experimental Thermal and Fluid Science, 47, 68\u201380 (2013)<\/li>\n
  5. Noto, Tasaka, Murai. Experiments in Fluids, 62, 131 (2021)<\/li>\n<\/ol>\n\n\n
    <\/div>\n\n\n\n
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    Picture-1: Three-layer Color PIV for flows behind a delta wing<\/figcaption><\/figure><\/div>\n\n\n\n
    <\/div>\n\n\n\n
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    Picture-2: 3-D flow structure in a mixing container<\/figcaption><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"

    Particle Image Velocimetry (PIV) has advanced to three-dimensional three-component velocity vector field measu […]<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":523,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","vkexunit_cta_each_option":""},"_links":{"self":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/pages\/525"}],"collection":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/comments?post=525"}],"version-history":[{"count":2,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/pages\/525\/revisions"}],"predecessor-version":[{"id":1300,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/pages\/525\/revisions\/1300"}],"up":[{"embeddable":true,"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/pages\/523"}],"wp:attachment":[{"href":"https:\/\/c-mng.cwh.hokudai.ac.jp\/lfc-me.eng\/Root\/wp-json\/wp\/v2\/media?parent=525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}