A CFD study of flow quantities and heat transfer by changing a vertical to diameter ratio and horizontal to diameter ratio in inline tube banks using URANS turbulence models
Nabeel Abed,Imran Afgan +1 more
TL;DR: In this article, the effect of changing the aspect ratio on the heat transfer and flow quantities over in-line tube banks was investigated and two types of inline arrangements, square and non-square configurations, were employed; the models that were examined are a standard k-e model, SST k-ω model, v2-f model and EB-RSM model.
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About: This article is published in International Communications in Heat and Mass Transfer. The article was published on 01 Dec 2017. and is currently open access. The article focuses on the topics: Strouhal number & Aspect ratio.
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Figures
Figure 12: Mean velocity streamlines for non-square pitch ratios at a constant transvers distance using the EB k-ɛ model. 
Figure 13: Mean Nusselt number distributions around the central tube using the EB k-ɛ model. 
Figure 15: A comparison between experimental data of Fitz-Hugh (1937) and predicted results by the EB k-ε model for 3D pitch square ratios. 
Figure 4: A comparison between 2D URANS and LES of Afgan (2007) using mean velocity streamlines. 
Figure 5: The normalized pressure coefficient around the central tube in square in-line tube bundle using URANS. 
Figure 6: The normalized pressure coefficient (Cp) around the central tube in non-square in-line tube bundle using 2D unsteady EB k-ɛ model.
Citations
Numerical study and prediction of thermohydraulic performance in crossflow over hybrid tube bundles
Selma Akçay,Selim Buyrukoğlu +1 more
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Flow-Induced Vibration in Heat Exchangers
TL;DR: In this article, a review of various mechanisms that cause vibration and noise in heat exchanger tube bundles is presented, with a focus on methods for achieving good tube support arrangements that minimize vibration damage.
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Numerical simulation of cross-flow around four cylinders in an in-line square configuration
TL;DR: In this paper, two-dimensional and three-dimensional numerical simulations of cross-flow around four cylinders in an in-line square configuration are performed using a finite-volume method, where the Reynolds numbers (Re) are chosen to be Re=100 and 200 and the spacing ratio L/D is set at 1.6, 2.5, 3.0 and 4.0.
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A numerical study of unsteady fluid flow in in-line and staggered tube banks
Steven Beale,D.B. Spalding +1 more
TL;DR: In this paper, the results of numerical calculations for transient flow in in-line-square and rotated-square tube banks with a pitch-to-diameter ratio of 2:1, in the Reynolds number range of 30-3000, were presented together with quantitative details of pressure drop, lift, drag and heat transfer.
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