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High Throughput Analysis of Liquid Droplet Impacts
Published on: March 6, 2020
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Analytical Consideration for the Maximum Spreading Factor of Liquid Droplet Impact on a Smooth Solid Surface
Jiayu Du1, Xiong Wang1, Yanzhi Li1
1Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
Langmuir : the ACS Journal of Surfaces and Colloids
|June 11, 2021
Summary
This study presents a universal model for liquid droplet impact, improving maximum spreading factor predictions in the viscous regime. The new model significantly reduces errors by accurately calculating viscous dissipation.
Area of Science:
- Fluid dynamics
- Surface science
- Materials science
Background:
- Predicting liquid droplet impact behavior is crucial for various applications.
- Existing models struggle with accuracy in the viscous regime, overestimating energy dissipation.
Purpose of the Study:
- To develop a universal model for predicting the maximum spreading factor of liquid droplet impact.
- To improve the accuracy of predictions, especially in the viscous regime.
Main Methods:
- Utilizing an energy conservation approach.
- Developing a new model for spreading time (t_m = 1.47 * tau * We^0.44).
- Validating the model with simulations and existing literature data.
Main Results:
- The universal model accurately predicts the maximum spreading factor.
- Computing errors are reduced from over 30% to below 6% in the viscous regime.
- The model demonstrates good performance in the capillary regime as well.
Conclusions:
- The developed model offers a significant improvement over previous methods for liquid droplet impact.
- Accurate computation of viscous dissipation is key to improving spreading factor predictions.
- The model shows broad applicability across different flow regimes.
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