Notable Behaviours of Liquid Draining in a Tank with a Bluff-Body as an Air-Core Suppression Mechanism

Fadhilah  Mohd Sakri; Mohamed Sukri  Mat Ali; Ivanov Konstantin  Georgievich; Nurshafinaz  Mohd Maruai; Ahmad Faiz  Mohammad

doi:10.37934/ard.122.1.198207

Authors

Fadhilah Mohd Sakri Department of Aerospace, Universiti Kuala Lumpur–Malaysia Institute of Aviation Technology (UniKL MIAT), 43800 Dengkil, Malaysia
Mohamed Sukri Mat Ali Wind Engineering Laboratory, Malaysia-Japan International Institute of Technology, UTM Kuala Lumpur, 54100, Kuala Lumpur, Malaysia
Ivanov Konstantin Georgievich Faculty of Physics, Saint Petersburg State University of Industrial Technologies and Design, Saint Petersburg, Russia
Nurshafinaz Mohd Maruai Wind Engineering Laboratory, Malaysia-Japan International Institute of Technology, UTM Kuala Lumpur, 54100, Kuala Lumpur, Malaysia
Ahmad Faiz Mohammad Wind Engineering Laboratory, Malaysia-Japan International Institute of Technology, UTM Kuala Lumpur, 54100, Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.37934/ard.122.1.198207

Keywords:

Liquid-draining tank, air-core vortex, disc plate, cone plate, air-core suppression mechanism, OpenFOAM

Abstract

The air-core vortex that generally shows up as fluid channels inside a tank lessens the channel rate, which can decrease the fluid supply's depleting proficiency and life expectancy. This paper examines the fundamental measures for passively controlling the presence of such an air-core. OpenFOAM was used to examine the effects of a disc plate and a cone on the formation of an air-core vortex within a liquid draining tank. The research revealed various drainage behaviours. In the case of the disc plate, the draining process displayed three distinct stages: the normal regime, transitional regime, and air-core regime. However, when the disc was substituted with a cone, only one behaviour corresponding to the air-core regime was evident. At the point of liquid passing the disc plate or cone, the air-core vortex emerged. For the disc plate scenario, a partial vortex ring was observed whereas for the cone plate, no vortex ring was perceived.