年間 6 号発行
ISSN 印刷: 2152-5102
ISSN オンライン: 2152-5110
Indexed in
Numerical Studies on Air-Core Vortex Formation During Draining of Liquids from Tanks
要約
The gas-liquid interface dips during the draining of a liquid through a discharge port of a vessel or a tank. The dip develops into a gas-core vortex which subsequently enters the discharge port. This entry can be either gradual or sudden, depending on the intensification of the rotational flow currents during the draining process. The extension of the gas-core into the drain port reduces the flow area and consequently the flow rate. In liquid propellant rocket motors, this phenomenon can have adverse effect on the performance as well as lead to under utilisation of the propellant. In this paper, the authors have tried to find the reason why such an air-core vortex develops in the first place, and the factors that influence its intensification over time, as reported in literature. These investigations have been carried out through simulations done using the commercial ANSYS Fluent code to validate the findings from the CFD results. The simulations are carried out using the volume of fluid (VOF) method, which obtains the volume fraction of each of the fluid throughout the domain and thereby captures the gas-liquid interface motion. Thereafter, the air-core vortex height predictions are validated with results reported in the literature.
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Agarwal Dheeraj, Basu Prateep, John Tharakan T., Salih A., Prediction of gas-core vortices during draining of liquid propellants from tanks, Aerospace Science and Technology, 32, 1, 2014. Crossref
-
Mathew Sam, Patnaik B S V, Tharakan T John, Numerical study of air-core vortex dynamics during liquid draining from cylindrical tanks, Fluid Dynamics Research, 46, 2, 2014. Crossref
-
Tingting Liu, Wei Su, Tao Yang, Yuan Xu, Vibration interference analysis and verification of micro-fluidic inertial switch, AIP Advances, 4, 3, 2014. Crossref
-
Power Christine, McNabola Aonghus, Coughlan Paul, A Parametric Experimental Investigation of the Operating Conditions of Gravitational Vortex Hydropower (GVHP), Journal of Clean Energy Technologies, 4, 2, 2015. Crossref
-
Nazir Kamran, Sohn Chang Hyun, Study of aircore phenomenon and influence of water height during liquid draining, Journal of Mechanical Science and Technology, 31, 8, 2017. Crossref
-
Mei Yong, Gong Shengjie, Wang Chi, Gu Hanyang, Ying Bingbin, Song Yingxi, Numerical simulation of drainage performance in a drain device of steam generator, Annals of Nuclear Energy, 114, 2018. Crossref
-
Nazir Kamran, Sohn Chang Hyun, Aircore mechanism during draining based on influence of pressure difference and drain port diameter, Journal of Mechanical Science and Technology, 32, 12, 2018. Crossref
-
Son Jong Hyeon, Park Il Seouk, Prevention of air entrainment during liquid draining using disc-type vortex suppressor, Journal of Mechanical Science and Technology, 32, 10, 2018. Crossref
-
Son Jong Hyeon, Lee Jong Hui, Park Il Seouk, Electromagnetic vortex suppression to prevent air core phenomenon for draining of electrically conducting liquids, Journal of Mechanical Science and Technology, 33, 6, 2019. Crossref
-
Mohd Sakri Fadhilah, Mat Ali Mohamed Sukri, Zaki Sheikh Ahmad, Agarwal R.K., Benchmark on the Dynamics of Liquid Draining Inside a Tank, E3S Web of Conferences, 95, 2019. Crossref
-
Rathaur Ranjana, Ghosh Sumana, Interfacial dynamics of air–liquid flow in eccentric drainpipe while draining from a square tank, Experimental Thermal and Fluid Science, 124, 2021. Crossref
-
Ajith Kumar R., Nair Ragesh R., Prabhu Mahadev, Srikrishnan A. R., Vortex Formation during Draining from Cylindrical Tanks: Effect of Drain Port Eccentricity, Journal of Aerospace Engineering, 30, 5, 2017. Crossref
-
Rathaur Ranjana, Ghosh Sumana, Numerical investigation of water draining and oil-water draining from a square tank-A comparison, International Journal of Multiphase Flow, 150, 2022. Crossref
-
Harish Sankar, Hariharan S. K., Shajahan Ashiq, Ganapathiraju Adithya, Prabhu Mahadev, Ajith Kumar R., Rankine Vortex Formation in Cylindrical Tanks with Curved Base: An Experimental Investigation, Journal of Spacecraft and Rockets, 2022. Crossref
-
Ajith Kumar R., Joykutty Josy, Shaji Rahul Korah, Srikrishnan A. R., Vortex Suppression through Drain Port Sizing, Journal of Aerospace Engineering, 29, 4, 2016. Crossref
-
Prabhu Mahadev, Nair Ragesh Ramakrishnan, Ajith Kumar Raghavan, Air core vortexing in liquid draining tanks: Influence of surface roughness, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2022. Crossref