NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH
D., A., L., A., Y., A., A., R. (2008). NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH. EKB Journal Management System, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), 416-430. doi: 10.21608/amme.2008.39755
AMMOUR D.; ADJLOUT L.; ADDAD Y.; REVELL A.. "NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH". EKB Journal Management System, 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., 2008, 416-430. doi: 10.21608/amme.2008.39755
D., A., L., A., Y., A., A., R. (2008). 'NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH', EKB Journal Management System, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 416-430. doi: 10.21608/amme.2008.39755
D., A., L., A., Y., A., A., R. NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH. EKB Journal Management System, 2008; 13(13th International Conference on Applied Mechanics and Mechanical Engineering.): 416-430. doi: 10.21608/amme.2008.39755

NUMERICAL SIMULATION OF AN IN-LINE TUBE BUNDLE USING THE URANS APPROACH

The International Conference on Applied Mechanics and Mechanical Engineering
Article 125, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 416-430  XML PDF (882.79 K)
Document Type: Original Article
DOI: 10.21608/amme.2008.39755
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Authors
AMMOUR D.1; ADJLOUT L.1; ADDAD Y.2; REVELL A.2
1Faculty of Mechanical Engineering, Department of Marine Engineering University of Science and Technology U.S.T.ORAN-MB, B.P.1505 Oran El Mnaouar 31000, Oran, ALGERIA.
2School of MACE, Manchester University, M60 1QD, Manchester, UK.
Abstract
ABSTRACT
In the present work, a turbulent flow across a square in-line tube bundle is computed
using the Unsteady Reynolds Averaged Navier-Stokes (URANS) approach. The pitch
ratio used in the tube bundle configuration is P/D=T/D=1.44 and the Reynolds number
is 70000 based on tube diameter. Both 2D and 3D computational domains are
considered. Turbulence models tested include the standard k–ε model of Jones et al.
[12], the k-ω Shear Stress Transport (SST) model of Menter [10] and the Reynolds
Stress Model of Speziale et al. [11] (SSG). In addition, the recently developed, SST- as C
model by Revell [1] is also tested. The unstructured industrial code Code-Saturne has
been used for the present study. In general, the flow predictions using the 2D grid fail to
capture correctly the general flow physics; while on the other hand, the 3D calculations
give predictions of pressure fields and velocity profiles that are in broad agreement with
both LES results [2] and the more recent experimental data [4]. With regards to
turbulence models, a comparison of the pressure coefficient and velocity profiles
revealed that the SST- as C and RSM models, both seem to give reasonable predictions
of the flow, capturing the asymmetric behaviour of the flow as the reference data. As
expected, the standard κ – ε model fails to capture this behaviour and predicts a rather
symmetric flow field. The pressure spectra from the SST- as C calculation indicates a
single clear peak at around the frequency 45Hz (St=0.84), similar to that observed in
LES predictions. This suggests that both large and small re-circulations coexist on the
wake of centre tubes resulting in the shear stress to be higher in the bottom than on the
top of the tubes.
Keywords
Tube bundles; RANS; URANS; turbulence modelling; asymmetric flow
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