Work

The Significant Effect of Disk Plate and Cone as an Air-Core Suppression Mechanism inside a Liquid Draining Tank

Year: 2025

Type: article

Abstract: This study delves into mitigating the formation of an air-core vortex, a common occurrence during liquid drainage in tanks, known to impede the draining process and potentially decrease the tank's efficiency and longevity. The research explores passive measures to control the emergence of this vortex. Computational fluid dynamics simulations using OpenFOAM were employed to investigate the impact of two distinct geometries, a disc plate and a cone on the formation of the air-core vortex during liquid drainage. Various drainage behaviours were observed and the changes of the draining process can be grouped into three stages which are normal regime, transitional regime and air-core regime. The introduction of a disc partially prevented the formation of the air-core vortex. On the other hand, the cone-shaped enhanced the discharge coefficient and the mass flow rate. Notably, a cone with a diameter of 2d, positioned at a height of H=d above the outlet proved most effective in diminishing the critical height and strength of the vortex. With this configuration featuring the bluff-body, the critical height was reduced by 97.55%, while the discharge coefficient and mass flow rate saw an increase of 42.23%.

Source: CFD letters

DOI: 10.37934/cfdl.17.11.2536

Authors: Fadhilah Mohd Sakri, Mohamed Sukri Mat Ali, Ivanov Konstantin Georgievich, Izuan Amin Ishak

Institutions: University of Kuala Lumpur, University of Technology Malaysia, Saint-Petersburg State University of Technology and Design, Tun Hussein Onn University of Malaysia

Language: English

Topic: Hydraulic flow and structures

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Universiti Teknologi Malaysia, Universiti Kuala Lumpur

OpenAlex ID: W4411044073

FWCI:

Cites: 21

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Related to: 10