{"id":54406,"date":"2021-04-19T09:40:29","date_gmt":"2021-04-19T09:40:29","guid":{"rendered":"\/forum\/forums\/topic\/residual-plot-in-cfd-post-processing-by-defining-each-term-of-navier-stokes-equation\/"},"modified":"2021-04-19T09:40:29","modified_gmt":"2021-04-19T09:40:29","slug":"residual-plot-in-cfd-post-processing-by-defining-each-term-of-navier-stokes-equation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/residual-plot-in-cfd-post-processing-by-defining-each-term-of-navier-stokes-equation\/","title":{"rendered":"Residual plot in CFD-Post processing by defining each term of navier-stokes equation."},"content":{"rendered":"<p>I am trying to plot the X-direction of Full Navier Stokes in CFD post-processing by defining the variable as n(u*du\/dx+v*du\/dy+w*du\/dz)+(1\/density)*dp\/dx &#8211; ((dynamic viscosity\/density)*(du\/dx. gradient X+du\/dy. gradient Y+du\/dz . Gradient Z))nI export the results from fluent and defined each term of the Navier stokes equation as a variable according to my model with the help of exported results. And tried to plot this Xdir Navier stokes equation on streamline as well as line. n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/137\/ZNVMZCFW7TA0.png\" width=\"1112\" height=\"460\" \/>this plot is for x-direction, the red line shows results for the fluid domain with the solid cylinder in between. n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/833\/KAU8EB7UIIGM.png\" width=\"614\" height=\"464\" \/>I have two cases in one case fluid is in wedge shape and in 2nd case same wedge but a solid cylinder in between. n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/066\/HVMTD81OZIVC.png\" width=\"904\" height=\"324\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/606\/8JXXOWTJRWA6.png\" width=\"1306\" height=\"1136\" \/>nn<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/371\/OMBF18435R5A.png\" width=\"904\" height=\"488\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/477\/5TLOME5KJUZZ.png\" width=\"668\" height=\"470\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/369\/0RACKE135KZN.png\" width=\"2502\" height=\"1096\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/441\/ZCUWDTU541ZS.png\" width=\"904\" height=\"470\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/440\/15B59GIFG0XE.png\" width=\"904\" height=\"488\" \/>results show that residuals have converged, variable plots are also constant for a certain no of iterations. nSimulation setup-n3D, double-precision, laminar flow(Reynolds no. 0.1), multiphase mixture model, Simple Method nQuesting-nIn the first plot- why is the full Navier-stokes equation is giving peaks near the solid wall. if the fluent has solved the equations with 10^-3 residuals. it means it should not give any residual value. nplease tell me what is the reason behind these peaks. <\/p>\n","protected":false},"template":"","class_list":["post-54406","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["26736"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["?VF?"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2121"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["54406"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","184114"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["150107"],"_bbp_last_active_id":["150107"],"_bbp_last_active_time":["2021-04-20 13:48:33"]},"test":"rupatel"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/54406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/54406\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=54406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}