Ocean Systems Engineering

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Experimental study on liquid sloshing with dual vertical porous baffles in a sway excited tank

  • Sahaj, K.V. (Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka) ;
  • Nasar, T. (Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka) ;
  • Vijay, K.G. (Department of Ocean Engineering, Indian Institute of Technology Madras)
  • Received : 2020.01.24
  • Accepted : 2021.11.20
  • Published : 2021.12.25
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Abstract

Sloshing behavior of liquid within containers represents one of the most fundamental fluid-structure interactions. Liquid in partially filled tanks tends to slosh when subjected to external disturbances. Sloshing is a vicious resonant fluid motion in a moving tank. To understand the effect of baffle positioned at L/3 and 2L/3 location, a shake table experiments was conducted for different fill volumes of aspect ratio 0.163, 0.325 and 0.488. For a fixed amplitude of 7.5 mm, the excitation frequencies are varied between 0.457 Hz to 1.976 Hz. Wave probes have been located at both tank ends to capture the surface elevation. The experimental parameters such as sloshing oscillation and energy dissipation are discussed here. Comparison is done for with baffles and without baffles conditions. For both conditions, the results showed that aspect ratio of 0.163 gives better surface elevation and energy dissipation than obtained for aspect ratio 0.325 and 0.488. Good agreement is observed when numerical analysis is compared with the experiments results.

Keywords

Acknowledgement

The authors are grateful to the SERB, DST, Govt. of India Sponsored R&D under the project TLD- Structure and NITK for providing the laboratory facilities.

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