2D experiments and numerical simulation of the oscillatory shallow flow in an open channel lateral cavity

Navas-Montilla, Adrián; Martínez-Aranda, Sergio; Lozano, Antonio; García-Palacín, Ignacio; García‐Navarro, P.

doi:10.1016/j.advwatres.2020.103836

Cited by 6 publications

(2 citation statements)

References 38 publications

(82 reference statements)

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“…Another study done by standard k-ε turbulence model belongs to Abdel Aziz and Saber Salem Said. 12 Navas-Montilla et al 13 have presented a study including both experimental and numerical parts for a two-dimensional problem. The experimental results of PIV method have been used for comparison with the numerical ones of Unsteady Reynolds-Averaged Navier-Stokes (URANS) model.…”

Section: Introductionmentioning

confidence: 99%

Examination of air flow characteristics over an open rectangular cavity between the plates

Göktepeli

Atmaca

2023

International Journal of Aeroacoustics

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Air flow characteristics of an open cavity have been numerically examined by using different turbulence models of Detached Eddy Simulation (DES), k-ε Realizable, k-ω Shear Stress Transport (SST) and Large Eddy Simulation (LES) based on an experimental study of open literature. Numerical results of transient analyses have been compared to experimental results at cavity length-based Reynolds number of Re = 4600. Pressure distributions, streamline patterns, streamwise velocity components, mean velocity values and their vectors have been given in terms of contour graphics. Moreover, velocity profiles have been presented. Pressure fluctuations have been triggered by flow separation and its reattachment. Due to upstream separation of boundary layer, there was curved boundary layer obtained between the outer potential-flow-like and the recirculation zones. As a result, negative velocity values are evidence for rotational flows affected by formation of secondary flows in the cavity. Furthermore, lower pressure region has been observed as a result of rotational flow which was powerful in the open cavity. Numerical results of DES and LES turbulence models are in good agreement with the results of reference study. As the numerical results obtained by LES turbulence model are approximately same with those of experimental reference study, LES turbulence model is mostly recommended. As an option to these turbulence models, k-ω SST model could be utilized for limited computer capacity. However, k-ε Realizable model is not sufficient for capturing rotational flows which are very effective in terms of present case.

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Section: Introductionmentioning

confidence: 99%

Examination of air flow characteristics over an open rectangular cavity between the plates

Göktepeli

Atmaca

2023

International Journal of Aeroacoustics

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“…Studies have also examined shallow flow past a channel lateral cavity [21]. Utilizing a non-intrusive method to measure the water surface in the cavity region of the channel, velocity fields were presented.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Temperature and Air Velocity Distribution in a Rectangular Cavity with Insulated Side Walls

Adeleye,

Oni,

Oluwaleye

2023

IJHT

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Heat transfer and fluid flow in cavities is often a result of convection. The study of convection in enclosures, such as rectangular cavities, under different parameters, holds significance in understanding the thermal-hydraulic characteristics, like temperature and air velocity distribution, in systems where heat transfer and fluid flow are involved. This research focuses on the numerical investigation of temperature and air velocity distribution in a rectangular cavity. COMSOL Multiphysics software was utilized to create a model of the cavity, subjecting it to regulated temperatures of 323.0 K, 333.0 K, and 343.0 K at operating times of 0, 300, 900, and 1,500 seconds. The cavity's bottom wall was heated by a heater, and the inner sides of the right and left walls were insulated using fiberglass. The findings from the research indicate that at an operating time of 900 seconds, the maximum air velocities recorded were 0.06, 0.06, 0.03, and 0.10 m/s at the left wall, right wall, bottom, and top of the cavity respectively. Beyond 900 seconds of operation, the air velocities remained constant. Furthermore, at 900 seconds of operation, the maximum isotherms at the regulated temperatures of 323.0 K, 333.0 K, and 343.0 K were approximately equal to their respective temperatures, but they precisely equaled the regulated temperatures at an operating time of 1,500 seconds. The results of this research can be applied to various areas that involve heat and fluid flow, including heat exchangers, building design for energy efficiency, solar systems, nuclear reactor operations, microelectronic component cooling, energy storage, heating devices, and refrigeration systems.

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Finite Volume Models and Efficient Simulation Tools (EST) for Shallow Flows

Martínez-Aranda

Fernández-Pato

Echeverribar

et al. 2022

Advances in Fluid Mechanics

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2D experiments and numerical simulation of the oscillatory shallow flow in an open channel lateral cavity

Cited by 6 publications

References 38 publications

Examination of air flow characteristics over an open rectangular cavity between the plates

Examination of air flow characteristics over an open rectangular cavity between the plates

Numerical Investigation of Temperature and Air Velocity Distribution in a Rectangular Cavity with Insulated Side Walls

Finite Volume Models and Efficient Simulation Tools (EST) for Shallow Flows

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