CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Laminar Wall Jet Flow over a Shallow Cavity

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   October 3, 2016, 02:41
Red face Laminar Wall Jet Flow over a Shallow Cavity (help me)
New Member
Join Date: Oct 2016
Posts: 1
Rep Power: 0
javadkz is on a distinguished road
I want to simulation Laminar Wall Jet Flow over a Shallow Cavit.

The schematic diagram of physical problem taken in this
computational study is shown in Figures 1(a) and 1(b).
The two-dimensional incompressible laminar wall jet
flowunder the shallowcavity is taken into account.
the wall jet is assumed to be a uniform inlet velocity profile
and the jet density is assumed to be atmosphere air density
The uniform velocity inlet slot height (AI) is assumed to be
0.01, where, in Figure 1(b), AI is considered as jet inlet.
Based on no slip situation, 𝑢 = 0 and V = 0 along AB, BC,
CD, DE, EF, and HI.

Along GH:


how insert above boundry condition?

Along GF, the fully developed flow condition:

𝜕𝜙/𝜕𝑥=0 𝜙(𝑢, V, 𝑝, w)

how insert above boundry condition?

Assume that the walls AB, BC, CD, DE, and EF are maintained
at adiabatic 400K.
Along the solid boundaries, 𝑢 = 0 and V = 0.
The inlet fluid temperature is set as ambient at 303K

Computational channel height is (AH) = 20ℎ and the
flow length 𝐿, that is, AF = 40ℎ, is found to be sufficient
for all the cases. Aspect ratios (AR = w/s), AR = 1
are used for simulation. The step length (𝑋u) is taken
as 𝑋𝑢=2ℎ

inlet velocities of Reynolds number are taken based on the hydraulic diameter of computational velocity inlet (ℎ) domain. 𝑋d is taken as downstream length of the computational domain. All the parameters are nondimensional.

Reynolds number=752

how calculate hydraulic diameter for this 2d problem?

how set air to incompressible mode?

i put setting to ideal-gas incompressible but in density contour density is not constant and my contour is not similar to particle's contour.

please help me

Last edited by javadkz; October 3, 2016 at 05:27.
javadkz is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
wall shear stress for laminar flow vitorspadetoventurin OpenFOAM Post-Processing 5 November 26, 2022 21:15
CFX Treatment of Laminar and Turbulent Flows Jade M CFX 18 September 15, 2022 07:08
decomposePar problem: Cell 0contains face labels out of range vaina74 OpenFOAM Pre-Processing 37 July 20, 2020 05:38
Difficulty In Setting Boundary Conditions Moinul Haque CFX 4 November 25, 2014 17:30
boundary condition of wall driven cavity flow ramin shams Main CFD Forum 2 June 2, 2004 04:01

All times are GMT -4. The time now is 20:47.