Flow through a staggered tube bundle (FEDORA)
Authors: Simonin and Barcouda
Type: Analytical
Status:


Contents
Description
Flow Parameters
Reference Publications
Results
Description
Experimental study of a turbulent flow through a staggered tube bundle Simulations of the flow through a tube bundle are carried out at Re=18000 (Simonin and Barcouda, 1986).
If we compare the flow around a single tube in the tube bundle with the uniform flow around a single cylinder in an unobstructed domain, we find that for the former the oncoming flow is strongly non-uniform. This is caused by the flow distortion due to the neighbouring tubes. Four different regions can be identified (see Fig. 1): compression, acceleration, expansion and recirculation.
Up stream of the stagnation point, there is a compression area, which is followed by an acceleration of the fluid due to a restriction of the passage.
The sudden enlargement of the channel generates a slow down of the flow and an adverse pressure gradient, which generates a recirculation area behind the cylinder.
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Fig. 1: Characterisation of the flow field |
Geometry definition
The geometrical configuration of the experiment is presented in Fig. 2. The assembly is composed by seven rows, each one composed by ten or eleven rods arranged within a staggered pattern. The geometry presents the following parameters:
- Length of the domain
- Width of the domain
- Pitch
- Diameter of the rod
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Fig. 2: Experimental geometry |
Flow Parameters
The flow parameters are the following
- Dynamic viscosity:
- Density :
- Reynolds number :
At the level of the domain inlet, we use a velocity profile based on the measures. The data are transcribed in the table 1 below:
Table 1 - Water inlet conditions.
Reference Publications
- Simonin, O. and Barcouda, M. (1986) Measurements of fully developed turbulent flow across tube bundle. In 3rd Conference Internationale sur les Applications de l'Anemometrie Laser a la Mecanique des Fluides.
Results
Simulation results available for this case:
Number of topics: 1
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Topic revision: r9 - 2012-04-17 - 14:45:37 -
HakimSemai