{"id":38658,"date":"2019-10-30T22:44:52","date_gmt":"2019-10-30T22:44:52","guid":{"rendered":"\/forum\/forums\/topic\/how-does-open-channel-flow-model-consider-potential-energy\/"},"modified":"2019-10-30T22:44:52","modified_gmt":"2019-10-30T22:44:52","slug":"how-does-open-channel-flow-model-consider-potential-energy","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-does-open-channel-flow-model-consider-potential-energy\/","title":{"rendered":"How does open channel flow model consider potential energy"},"content":{"rendered":"

In FLUENT user guide for open channel flow model, it is stated in “determining the free surface level” that “Here <\/span>a horizontal free surface that is normal to the direction of gravity is assumed<\/span>.<\/span>” My questions:<\/p>\n

<\/p>\n

1.  I want to model a open channel flow where there is a slope (bottom of the channel is not horizontal). Does the above guideline prohibits me from using the open channel flow model since the gravity is not normal to the free surface?<\/p>\n

<\/p>\n

2. If I must use a horizontal channel, how will FLUENT open channel flow model consider the potential energy change due to the slope?<\/p>\n

<\/p>\n

3. One approach we are trying is to still use a horizontal mesh but specify both horizontal and vertical components of gravity based on the slope angle.<\/p>\n

<\/p>\n

4. Also even for a horizontal domain but with a bump at the bottom, the free surface will deform near the bump. Therefore, the free surface will not be normal to the gravity force any more.  Will that be a problem?<\/p>\n

<\/p>\n

Thanks!<\/p>\n

<\/p>\n

 <\/p>\n

<\/p>\n

Tao XING<\/span><\/strong>, Ph.D., P.E. 
Associate Professor 
Mechanical Engineering | College of Engineering<\/strong><\/span> 
Office: Engineering\/Physics 324F 
xing@uidaho.edu<\/span><\/a> <\/span>| <\/span>https:\/\/www.taoxing.net<\/span><\/a><\/span><\/u> 
208-885-9032  |  208-885-9031 (Fax) 
875 Perimeter Dr., MS 0902  |  Moscow ID 83844-0902   |  United States<\/span><\/p>\n

<\/p>\n

Director of Computational Fluid Dynamics Laboratory<\/span><\/a><\/span><\/p>\n

<\/p>\n

Co-Director of Experimental Fluid Dynamics Laboratory<\/span><\/a><\/span><\/p>\n

<\/p>\n

Associate Editor of ASME Journal of Verification, Validation and Uncertainty Quantification<\/span><\/a><\/span><\/p>\n

<\/p>\n

Executive Member of Editorial Board of Journal of Hydrodynamics<\/span><\/a> (Springer)<\/span><\/p>\n

<\/p>\n

 <\/span><\/span><\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-38658","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["10836"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["618"],"_bbp_subscription":["237403"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["38658"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","159560"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["97568"],"_bbp_last_active_id":["97568"],"_bbp_last_active_time":["2019-11-01 12:15:59"]},"test":"xinguidaho-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/38658","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\/38658\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=38658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}