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An experiment on the breakup of impinging droplets on a hot surface

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Abstract

Breakup characteristics of liquid droplets impinging on a hot surface are investigated experimentally with the wall temperatures in the Leidenfrost temperature range of 220–330°C for n-decane fuel. Factors influencing droplet breakup are wall temperature, impinging velocity, droplet diameter and impinging angle. The 50% breakup probability shows that the impinging velocity decreases linearly with the droplet diameter increase and there exists an optimum impinging angle near 80° having the minimum value in the impinging velocity for given wall temperature and droplet size. Near the wall temperature of 250°C corresponding to the Leidenfrost temperature, a peculiar nonlinear behavior in the breakup probability is observed.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Seoul National University, 151-742, Seoul, Korea

    Y. S. Ko & S. H. Chung

Authors
  1. Y. S. Ko
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  2. S. H. Chung
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Additional information

This work was supported by the Turbo and Power Machinery Research Center, Seoul National University.

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Ko, Y.S., Chung, S.H. An experiment on the breakup of impinging droplets on a hot surface. Experiments in Fluids 21, 118–123 (1996). https://doi.org/10.1007/BF00193915

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  • DOI: https://doi.org/10.1007/BF00193915

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