|March 1, 2010, 16:27||
Wall Shadow interfering with Nusselt Number calculation?
Ryan Z. Davis
Join Date: Mar 2010
Location: Idaho Falls, Idaho, United States
Posts: 11Rep Power: 7
I'm new to these forums, so I don't know if this question has already been answered. I am trying to create a benchmark test for natural convection in a 2D square cavity. I have a tube of hot water running along the left-hand wall of my square cavity and a tube of cold water running along the right-hand side of the cavity. There is a 50 degree temperature difference between the two tubes. The square cavity is filled with air and I have used a polynomial function to describe the density of the air. I'm comparing the Nusselt Number on the hot wall to a standard heat transfer correlation found in a Heat and Mass transfer book. My question is about the wall and wall-shadow that Fluent creates in the mesh. When I have fluent report the Nusselt number along the hot wall I get two very different numbers for the wall and the wall-shadow. Which number should I use? Or, should I use an average of the two?
|March 3, 2010, 07:16||
Join Date: Mar 2009
Location: Pune, Maharashtra, India
Posts: 25Rep Power: 7
If a wall is shared by two domains, then it will have a wall shadow.
Wall - will refer to the wall on one side (say in your case water or fluid)
Wall shadow - will refer to the other side (say air)
Thus you should decide which will be applicable.
|free convection, heat transfer, natural convection, nusselt number|
|Thread||Thread Starter||Forum||Replies||Last Post|
|SnappyHexMesh for internal Flow||vishwa||OpenFOAM Native Meshers: snappyHexMesh and Others||23||August 6, 2014 03:50|
|Fluent3DMeshToFoam||simvun||OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ...||48||May 14, 2012 05:20|
|external flow with snappyHexMesh||chelvistero||OpenFOAM||11||January 15, 2010 20:43|
|Gradient over interior (shadow) wall||D Krijgsman||FLUENT||0||August 21, 2008 00:44|
|Nusselt number||tod||Phoenics||0||October 18, 2002 09:56|