{"id":159029,"date":"2021-07-21T09:12:43","date_gmt":"2021-07-21T07:12:43","guid":{"rendered":"https:\/\/bandelin.com\/?post_type=docs&#038;p=159029"},"modified":"2021-07-21T09:12:45","modified_gmt":"2021-07-21T07:12:45","password":"","slug":"kavitation","status":"publish","type":"docs","link":"https:\/\/bandelin.com\/da\/docs\/wissen\/kavitation\/","title":{"rendered":"Kavitation"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p>I ultralydsreng\u00f8ringsudstyr fremmer kavitation fjernelsen af smudspartikler fra det faste objekt, der skal reng\u00f8res. Andre anvendelser omfatter homogenisering, hvor der produceres emulsioner, og afgasning af v\u00e6sker. P\u00e5 grund af det meget lave tryk inde i kavitationsboblerne omdannes gasser, der er opl\u00f8st i mediet, til gasform. N\u00e5r kavitationsboblerne imploderer, bliver de kun reabsorberet af mediet op til det punkt, hvor der er ligev\u00e6gt i opl\u00f8sningen. Den overskydende gas slipper ud af mediet. Den effekt, der bruges til sonikering af biogassubstrater, udnytter f.eks. de forskydningskr\u00e6fter, der genereres af kavitation ved gr\u00e6nsefladen mellem fast stof og v\u00e6ske, og det deraf f\u00f8lgende overfladeangreb, som f\u00f8rer til findeling og opl\u00f8sning af sammenh\u00e6ngende partikler i flydende medier.&nbsp;<\/p>\n\n\n\n<p>Beviset for denne kavitationseffekt kan let tilvejebringes med den s\u00e5kaldte <strong><a href=\"\/da\/applikationer\/folietest\/\">Test af folie<\/a>\u00a0<\/strong>udbytte: En aluminiumsfolie med en tykkelse p\u00e5 0,01 til 0,02 mm str\u00e6kkes p\u00e5 en tr\u00e5dramme, placeres i v\u00e6sken og sonikeres i 60 sekunder. Kavitationen for\u00e5rsager perforeringer i folien, som g\u00f8r det nemt at genkende kavitationens intensitet og fordeling.<\/p>\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"lyte-wrapper fourthree\" style=\"width:420px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_O5uu_j5i_nI\"><div id=\"lyte_O5uu_j5i_nI\" data-src=\"https:\/\/bandelin.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=%2F%2Fi.ytimg.com%2Fvi%2FO5uu_j5i_nI%2Fhqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\"><\/div><\/div><button tabindex=\"0\" class=\"play\"><\/button><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/O5uu_j5i_nI\" rel=\"nofollow\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/bandelin.com\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FO5uu_j5i_nI%2F0.jpg\" alt=\"YouTube video thumbnail\" width=\"420\" height=\"295\" \/><br \/>Se denne video p\u00e5 YouTube<\/a><\/noscript><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:420px;margin:5px;\"><br\/><span class=\"lyte_disclaimer\">Ved at afspille videoerne accepterer du YouTubes privatlivspolitik.<\/span><\/div><figcaption><\/figcaption><\/figure><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>In Ultraschallreinigungsger\u00e4ten f\u00f6rdert die Kavitation die Abtragung der Schmutzpartikel vom festen Reinigungsobjekt. Weitere Anwendungen sind die Homogenisierung, bei der Emulsionen hergestellt werden sowie die Entgasung von Fl\u00fcssigkeiten. Durch den sehr geringen Druck innerhalb der Kavitationsblasen gehen hierbei im Medium gel\u00f6ste Gase in den gasf\u00f6rmigen Zustand \u00fcber. Beim Implodieren der Kavitationsblasen werden sie dann nur bis [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"doc_category":[1926],"doc_tag":[],"class_list":["post-159029","docs","type-docs","status-publish","hentry","doc_category-wissen"],"acf":[],"year_month":"2026-10","word_count":195,"total_views":"61","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"J Bandelin","author_nicename":"jobandelin","author_url":"https:\/\/bandelin.com\/da\/author\/jobandelin\/"},"doc_category_info":[{"term_name":"Grundlagenwissen Kavitation","term_url":"https:\/\/bandelin.com\/da\/docs-category\/wissen\/"}],"doc_tag_info":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kavitation | BANDELIN electronic GmbH &amp; Co. 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