Hello,<\/p>\n
Background:<\/strong> I have a large chemical reaction mechanism running in 2D Fluent. It consists of 24 reactions and 17 species. I am looking to do sensitivity studies, where I turn off a reaction, then re-run to get its contribution to the results.<\/p>\n I previously tried deactiviting specific reactions in the mechanism be de-selecting them. However, for reasons unknown, that did not actually deactivate them. A sure way to deactivate is to set the pre-exponential factor to a small fraction of its original value, say, two orders of magniutude lower. This effectively turns off the reaction.<\/p>\n Now to the issue. Doing this with the GUI is painful, so I am doing it with scheme commands. <\/p>\n Problem<\/strong>: The (rpsetvar ‘materials mymaterials) does not actually update the materials database or the GUI. <\/p>\n Possible Solution<\/strong>: By searching through this document [https:\/\/www.cfdyna.com\/CFDHT\/SchemeLanguage.pdf], I found a command called set-all-materials!. This one actually works and updates the GUI values.<\/p>\n Question<\/strong>: Does anyone know why rpsetvar <\/em>doesn’t work? Also, does an easier way to update kinetic parameters exist (non-GUI)?<\/p>\n Thanks.<\/p>\n BTW, here is my workflow:<\/p>\n where “replace” is a scheme procedure I found online:<\/p>\n(define mat (%rpgetvar 'materials))
(define mymaterials (replace mat 1.5e+14 1.5e+12))
(set-all-materials! mymaterials)<\/pre>\n(define (replace lst find repl)
(if (pair? lst)
(cons
(replace (car lst) find repl)
(replace (cdr lst) find repl))
(if (equal? find lst)
repl
lst)))<\/pre>\n","protected":false},"template":"","class_list":["post-346674","topic","type-topic","status-closed","hentry","topic-tag-chemical-reaction","topic-tag-fluent","topic-tag-materials","topic-tag-scheme","topic-tag-scheme-procedure"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t