{"id":160478,"date":"2021-07-19T10:41:36","date_gmt":"2021-07-19T10:41:36","guid":{"rendered":"\/forum\/forums\/topic\/how-to-prevent-reverse-flow-without-altering-the-nature-of-flow\/"},"modified":"2021-07-20T16:32:58","modified_gmt":"2021-07-20T16:32:58","slug":"how-to-prevent-reverse-flow-without-altering-the-nature-of-flow","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-prevent-reverse-flow-without-altering-the-nature-of-flow\/","title":{"rendered":"How to prevent reverse flow without altering the nature of flow?"},"content":{"rendered":"
\n
\n

Hi all,<\/p>\n

Symmetrical Geometry (figure 1a), explanations: A square cross-sectioned fume hood chamber ('A') having only a front opening, and a square cross-sectioned cookstove ('B') placed inside in it. Cookstove wall (solid) has some thickness which is also presented in the fluid domain. Cookstove ('B') has two different fluid heat generation sources inside it, divide as lower and upper parts of the cookstove. The lower part of the cookstove has the porous region heat generation and the upper part is the non-porous heat generation region.<\/p>\n

Models used in fluent: Steady-state, turbulent (k-epsilon, standard wall function), hot flow. Working fluid is air, density calculated using ideal gas law (gravity is on). Simulating a mixed convection flow: Airflow to the cookstove is driven by buoyancy (two different heat generation sources) and also by pressure drop at the outlet plane of fume hood.<\/p>\n

Boundary conditions: a. ('1', XY plane) Pressure inlet (Gauge Pr = 0 Pa), b. ('2', XZ plane) Pressure outlet (Gauge Pr is few Pa of negative Pr); c. ('3'), ('4'), and ('5') are the constant temperature wall boundaries. d. ('6') is symmetry face  <\/p>\n

Interfaces: ('7') is the air entry face in the porous region,  ('8') is the air entry face in the non-porous region, and ('9') is the total air exit from the cookstove.<\/p>\n

\n
\n
\n\"figure1a.jpg\"
\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-160478","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-mixed-convection-2","topic-tag-reverse-flow-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["3716"],"_bbp_likes_count":["0"],"_bbp_subscription":["254338"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["160478"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","210418"],"_bbp_voice_count":["2"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["185905"],"_bbp_last_active_id":["185905"],"_bbp_last_active_time":["2021-07-20 16:32:58"]},"test":"thirumoorthymech-iitd-ac-in"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160478","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\/160478\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=160478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}