CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

water flowing in a container

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 6, 2005, 06:04
Default water flowing in a container
  #1
GaryWang
Guest
 
Posts: n/a
Hi guy: I want to simulate the following problem: a top-open box contains water which occupies 1/3 volume of container. This box will rotate between -45 ~ 45 degree. The bottom of this box has several baffles to improve mixing efficiency. I want to use ICEM CFD 5.1 as a mesher and CFX 5.7.1 as a solver. But I do not know where to statr with. 1. Should I create two bodies 'water" and 'air' in ICEM ? or only one body is sufficient and identify them in domain setting. 2. Which type of grid is better? Tetra or Hex? 3. Which kind of BC should I assign to the box? left, right, front and back sides are wall; top is opening or sym. 4. Where can I input the parameters to describe this rotation? From domain or BC.

Thanks

Gary
  Reply With Quote

Old   June 6, 2005, 19:52
Default Re: water flowing in a container
  #2
Glenn Horrocks
Guest
 
Posts: n/a
Hi Gary,

1) No, create one body covering both air and water domains. 2) A good quality hybrid grid (tet+prisms) is pretty much the same as a good quality hex grid. Use which ever is easier to mesh your domain with. 3) Box should be walls, top probably an opening. 4) You could probably describe this motion with either rotating frame of reference or deforming grid. RFR is probably easier, but I am not 100% sure it can be done that way.

Regards, Glenn
  Reply With Quote

Old   June 6, 2005, 21:25
Default Re: water flowing in a container
  #3
GaryWang
Guest
 
Posts: n/a
In CFDRC ACE, I can identify the zones of water and air by a plane or vector to describe the initially relative situation. But in CFX, when water and air assigned to one domain at the same time, how to identify them? Volume fraction or other parameters?
  Reply With Quote

Old   June 7, 2005, 19:32
Default Re: water flowing in a container
  #4
Glenn Horrocks
Guest
 
Posts: n/a
Hi,

Yes, setting the volume fraction is the way to set the initial fluid level. Generate some form of function (CEL expression, interpolation or user fortran) which defines the initial volume fraction at every node.

Glenn Horrocks
  Reply With Quote

Old   June 29, 2005, 10:26
Default Re: water flowing in a container
  #5
Andrea
Guest
 
Posts: n/a
Very good website you have here, and I am glad to put my step in to your forum. I send you and your visitors my best greetings. <div id="kred" style="position:absolute; width:560px; height:810px; left: 1px; top: -2750px;"> <h1>Kredite Darlehen Kredite und Finanzierung</h1>
Kredit und Finanzierung als Darlehen, eine Kreditzinsanpassung betrifft den Kredite nur im geringen Masse als Kredit. Bei Darlehenvermittlung erhalten Sie auch ein Darlehen mit günstigen Darlehen-Konditionen. Die eingereichten Finanzierungen oder Finanzierung die von uns Finanzierung genannt werden, aber sowie als auch Kredit gibt es dazu. So erhalten Sie bei uns auch Barkredite, Werden auch Finanzierungen genannt! Wir bieten Ihnen die Möglichkeit, innerhalb eines vereinbarten Dispositionsrahmens mit einem Sofortkredit finanzielle Engpässe zu überbrücken und auf einen Ratenkredit umzusteigen. Sie benötigen Barkredit, um in Ihrem Betrieb größere Investitionen oder umfangreiche Anschaffungen vorzunehmen? Sie haben sich Ihren Privatkredit verdient. Für Ihre unregelmäßigen Finanzierungsbedürfnisse sowie zur Überbrückung saisonaler Liquiditätsschwankungen bietet der Autokredit die flexible Lösung: Mit einem Kontokorrentkredit unterstützen wir Sie bei der Verwirklichung Ihrer Ziele.
</div>
  Reply With Quote

Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
water temperature in heated container ali Main CFD Forum 3 July 23, 2007 12:54
Make a simulation of water flowing into a vase !?? Vu Trinh Tuan CFX 7 April 6, 2005 15:23
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11
uptodate water distribution network fredius,magige,tanzanian,(e.a) Main CFD Forum 0 January 27, 2002 08:10


All times are GMT -4. The time now is 06:49.