{"id":296507,"date":"2010-02-08T08:37:19","date_gmt":"2010-02-08T13:37:19","guid":{"rendered":"tag:www.mentor.com:\/\/3a3359e654d73a61ed66999bfaf83f08"},"modified":"2010-02-08T08:37:19","modified_gmt":"2010-02-08T13:37:19","slug":"blog-postsledgehammer-cfd-the-best-approach","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/296507","title":{"rendered":"blog post:&#8221;Sledgehammer CFD&#8221; &#8211; The Best Approach?"},"content":{"rendered":"<div><span lang=\"EN\">Re-reading my last blog (Beginning at the Beginning \u20265 Parabolic or Elliptic, Or Somewhere In Between?) a slightly disturbing thought occurred to me. Does the distinction, highlighted in that blog,\u00a0between parabolic, partially-parabolic, and elliptic solution methods have any real relevance to present day CFD?<\/span><\/div>\n<div><!--more-->On consideration, the honest answer is &#8211; only to a very limited extent.<\/div>\n<p>In the 1970s when we were struggling to perform realistic 3D computations even on the most powerful computers of the day (at Imperial College we were using a CDC 6600, which was then a state-of-the-art super computer), the savings in computer time and storage from using a parabolic or partially-parabolic solution method rather than a fully-elliptic one, when it was valid to do so, could be crucial in making a computational study practicable or affordable.<\/p>\n<p>Now, however, when we have virtually-free access to virtually-infinite computer resources (at least relative to the \u201causterity\u201d of the 1970s), these distinctions are pretty much meaningless. One might as well use a fully-elliptic solution method for everything &#8211; the convenience in using one standard method for everything vastly outweighs any \u201cwasted\u201d computer resources.<\/p>\n<div><span lang=\"EN\">To a purist it might seem unfortunate that the scientific elegance of the parabolic and partially-parabolic approaches have been lost. But it seems to me that, if the simplicity of a unified, standard approach (even when it might be \u201ca sledgehammer to crack a nut\u201c) has contributed to the widespread adoption of CFD that we see today, then it has been a price worth paying.<\/span><\/div>\n<p><!--content--><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/feeds.feedburner.com\/~r\/mgc_mechanical\/~4\/wwbc_wxVrkA\" height=\"1\" width=\"1\"\/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Re-reading my last blog (Beginning at the Beginning \u20265 Parabolic or Elliptic, Or Somewhere In Between?) a slightly disturbing thought occurred to me. Does the distinction, highlighted in that blog,\u00a0between parabolic, partially-parabolic, and elliptic solution methods have any real relevance to present day CFD?<\/p>\n","protected":false},"author":2984,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-296507","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/296507","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/2984"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=296507"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/296507\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=296507"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=296507"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=296507"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}