{"id":221955,"date":"2016-05-16T02:00:00","date_gmt":"2016-05-15T23:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=57f4fa87ff6f722fd23595a0cb9203ce"},"modified":"2016-05-16T02:00:00","modified_gmt":"2016-05-15T23:00:00","slug":"lattice-boltzmann-method-and-channel-flow","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=221955","title":{"rendered":"Lattice Boltzmann method and channel flow"},"content":{"rendered":"<p>Lattice Boltzmann methods are presented at an introductory level with a focus on fairly simple<br \/>\nsimulations that can be used to test and illustrate the model\u2019s capabilities. Two scenarios are<br \/>\npresented. The first is a simple laminar flow in a straight channel driven by a pressure gradient<br \/>\n(Poiseuille flow). The second is a more complex, including a wedge where Moffatt vortices may be<br \/>\ninduced if the wedge is deep enough. Simulations of the Poiseuille flow scenario accurately capture<br \/>\nthe theoretical velocity profile. The experiment shows the location of the fluid-wall boundary and<br \/>\nthe effects viscosity has on the velocity and convergence time. The numerical capabilities of the<br \/>\nlattice Boltzmann model are tested further by simulating the more complex Moffatt vortex scenario.<br \/>\nThe method reproduces with high accuracy the theoretical predction that Moffat vortices will not<br \/>\nform in a wedge if the vertex angle exceeds 146\u00b0. Practical issues limitations of the lattice<br \/>\nBoltzmann method are&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lattice Boltzmann methods are presented at an introductory level with a focus on fairly simple<br \/>\nsimulations that can be used to test and illustrate the model\u2019s capabilities. Two scenarios are<br \/>\npresented. The first is a simple laminar flow in a straig&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-221955","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/221955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=221955"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/221955\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=221955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=221955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=221955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}