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Multiphase Modelling of Orifice Cavitation for Optimum Entrance Roundness

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Current Trends in Civil Engineering

Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 104))

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Abstract

Cavitation is a common problem in pumps, control valves and orifices; causing serious wear, tear and damages. Under the wrong condition, cavitation reduces the components lifetime drastically. Cavitation occurs when local static pressure in a fluid reaches a level below the vapour pressure of the liquid at actual temperature. This work aims to study the cavitating flow through a circular orifice using computational fluid dynamics and to find out optimum shape of orifice in terms of entrance roundness to minimize cavitation. Fluid model of sharp-edged circular orifice is created in CFD, and the obtained result is compared with that of available experimental result. After calibration and validation, the fluid models created for circular orifice is modified for different entrance roundness values. The influence of entrance roundness on cavitation characteristics is analysed and the optimum value of entrance roundness for minimizing cavitation is obtained.

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References

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Acknowledgements

We are grateful to Dr. N. Unnikrishnan, Prof. Reeba Thomas and Prof. Smitha Mohan K., Department of Civil Engineering Trichur, for their generous support, patience, guidance, knowledge, time and enthusiasm and expert advice for the execution and completion of the work.

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Authors and Affiliations

  1. Government Engineering College Trichur, Thrissur, Kerala, India

    V. R. Greeshma

  2. Department of Civil Engineering, Government Engineering College Trichur, Thrissur, Kerala, India

    R. Miji Cherian

Authors
  1. V. R. Greeshma
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  2. R. Miji Cherian
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Corresponding author

Correspondence to V. R. Greeshma .

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Editors and Affiliations

  1. Cochin University of Science and Technology, Kochi, India

    Job Thomas

  2. National Institute of Technology Karnataka, Mangalore, India

    B.R. Jayalekshmi

  3. National Institute of Technology Calicut, Calicut, India

    Praveen Nagarajan

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Greeshma, V.R., Miji Cherian, R. (2021). Multiphase Modelling of Orifice Cavitation for Optimum Entrance Roundness. In: Thomas, J., Jayalekshmi, B., Nagarajan, P. (eds) Current Trends in Civil Engineering . Lecture Notes in Civil Engineering, vol 104. Springer, Singapore. https://doi.org/10.1007/978-981-15-8151-9_18

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  • DOI: https://doi.org/10.1007/978-981-15-8151-9_18

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-15-8150-2

  • Online ISBN: 978-981-15-8151-9

  • eBook Packages: EngineeringEngineering (R0)

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