Large eddy simulation of fully-developed flow in a helical segmented-fin tube bundle

Salinas-Vázquez, M.; Ramírez-Cruz, J.; Vicente, W.; Martínez-Espinosa, E.; Aviña-Jiménezez, H.M.; Lagarza-Cortés, Christian

doi:10.1016/j.apm.2021.05.027

Cited by 7 publications

(15 citation statements)

References 34 publications

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“…Implementing periodic boundary conditions on a single interacted module is performed mainly on bare tubes, as simulations conducted by Benhamadouche & Laurence [11] and Salinas-Vázquez et al [12]. The work carried out by Salinas-Vázquez et al [13] analyzed the hydrodynamics of helical-segmented finned tubes on a single interacted module. Finally, simulations performed by Beale [14,15] studied the heat transfer on a single interacted bare-tube module.…”

Section: Introductionmentioning

confidence: 99%

“…In the open literature, most works have simulated finned tube banks as small finned tube banks because the implementation of symmetry boundary conditions is less complex than periodic boundary conditions. The implementation of periodic boundary conditions on a single interacted module has been focused on hydrodynamics [11][12][13] due to difficulty in coupling the heating/cooling of external flow. Works proposed by Beale [14,15] studied heat transfer in a single interacted bare-tube module.…”

Section: Introductionmentioning

confidence: 99%

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SRANS Simulation on a Helical-Segmented Finned Tube Bank

Martínez-Espinosa,

Salinas-Vázquez

2024

IRJIET

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A numerical simulation on a six-row helical-segmented finned tube in a staggered layout is performed with the Reynolds Averaged Navier-Stokes (RANS) approach. The turbulence effect is represented with the k-ε RNG model, and a fixed temperature in each tube row considers the inside fluid temperature. The tube bank is represented by a small finned tube bank and a single interacted module. The small finned tube bank considers symmetry conditions on the sides of the computational domain. The single interacted module considers periodic boundary conditions for velocity, pressure, and temperature. Both simulations are compared to develop the basis of complex simulations such as repetitive finned tube modules. Average values on parallel planes to the streamwise direction for velocities, pressures, and temperatures are compared in both simulations. The comparative analyses show deviations lower than 11% for the velocity field, 12% for the pressure field, and 10% single for the temperature field. Therefore, results show an appropriate flow representation with periodic boundary conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SRANS Simulation on a Helical-Segmented Finned Tube Bank

Martínez-Espinosa,

Salinas-Vázquez

2024

IRJIET

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“…On the other hand, numerical simulations present detailed information on the heat transfer performance of a singlefinned tube [9][10][11][12][13] or a small-finned tube bundle [1,[14][15][16][17][18][19][20][21][22]. Most numerical simulations focus on representing the flow around the finned tube and its connection to heat transfer [1,[9][10][11]14,15,17,18,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…These vortices were identified through vector maps and streamlines in a RANS) simulation (Reynold Average Navier Stokes). Salinas-Vázquez et al [22] found relevant momentum transfer in the inter-segment space, which increased the turbulence and the formation of vortices between the fins at high spaces between the segments.…”

Section: Introductionmentioning

confidence: 99%

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The effect of segmentation depth in a helical fin tube bundle on the anisotropic turbulence state

García Andrade,

Martínez Espinosa,

Salinas-Vazquez

et al. 2023

Rev. Mex. Fís.

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The large eddy simulation approach was used to perform a numerical simulation of a flow around a helical segmented-fin tube bundle. This work focuses on the study of turbulence and the effect of segment depth on it. The simulation was conducted in an area away from the boundaries of the tube bundle, where the flow is fully-developed, and the use of periodic boundary conditions is possible. The computer-aided design of the helical segmented-fin tube geometry is incorporated into the computational grid from the immersed boundary technique. The Reynolds stress tensor was used to analyze the anisotropic state of turbulence. This flow is characterized by an anisotropic state generated by a flow with a preferential direction. A transfer of momentum in the inter-segment space and contiguous zones was observed. This intersegment flow generates a less anisotropic state of turbulence. This study aimed to understand a possible transformation of heat transfer with marginal geometrical changes and pressure drop increases.

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