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The Collision and Evaporation of a Droplet with a Heated Particle

The Collision and Evaporation of a Droplet with a Heated Particle. Samantha Chong, Curtin University. Supervisors: Dr Ranjeet Utikar Dr Monica Gumulya. Introduction to Problem. Investigate the behavior of droplet Mechanism of droplet interacting with hot solid surface

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The Collision and Evaporation of a Droplet with a Heated Particle

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  1. The Collision and Evaporation of a Droplet with a Heated Particle Samantha Chong, Curtin University Supervisors: DrRanjeetUtikar Dr Monica Gumulya

  2. Introduction to Problem • Investigate the behavior of droplet • Mechanism of droplet interacting with hot solid surface • Dynamics of droplet can be affected by Weber number (Mitra et al. 2013) • Achieve a good agreement between numerical and experimental results

  3. Approach • Manipulate the parameters: • Impact velocity (completed) • Droplet diameter (on-going) • Temperature of spherical particle (on-going) • Simulate 3D CFD model of droplet impact on solid spherical surface • Use “ParaView” to display the results

  4. Approach – Altering Impact Velocity • Diameter of droplet = 0.0031m • Surface tension = 0.0735N/m • Gravitational force = 9.8m/s2 • Density of droplet = 998kg/m3 Controlled variables Impact Velocities: 1). 0.435962 m/s 2). 0.998903 m/s 3). 1.412661 m/s

  5. Results – Effect of Impact Velocity (0.436m/s and 1.413m/s)

  6. Results – Effect of Impact Velocity (0.436m/s ; We = 8)

  7. Results – Effect of Impact Velocity (0.436m/s ; We = 8)

  8. Results – Effect of Impact Velocity (0.9989m/s ; We = 42)

  9. Results – Effect of Impact Velocity (1.412661m/s ; We = 84)

  10. Results – Effect of Impact Velocity

  11. Conclusion and Reflection • Higher velocity, higher We number, leads to more splashing and disintegration of droplet • Lower velocity, lower We number, no breakup is to occur • Good agreement with the high speed images from experiments is obtained

  12. Acknowledgement The author gratefully acknowledges the resource support from iVEC Supercomputing, Western Australia and the supervisors (Dr. Monica Gumulya and Dr. RanjeetUtikar) for this work.

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