Circulation Inside a Methanol – Water Drop Evaporating in a Heated Atmosphere
Source abstract
Abstract
Abstract The oscillatory circulation inside an evaporating methanol – water mixture drop at various surrounding temperatures, is reported. The cyclic acceleration and deceleration of the flow inside and around the center of the drop, is termed oscillatory circulation. The volume fraction of methanol in the mixture was varied and the evaporation was recorded at various surrounding temperatures. The study finds that the oscillation diminishes as the temperature of the surrounding increases. The peak (i.e., maxima) frequency of the oscillation among all the volume fraction tested, is observed to be a strong function of the surrounding temperature. The variation of frequency with volume fraction shows that the peak shifts to the higher side of the volume fraction as the temperature is increased. The combined effect of the thermal Marangoni, solutal Marangoni, and solutal Rayleigh convection, was found to control the oscillatory circulation process.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials and Printing Technologies · Combustion and flame dynamics · Fluid Dynamics and Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. Droplet vaporization characteristics of vegetable oil derived biofuels at high temperatures10.1016/S0894-1777(99)00052-7 ↗
2. Protein crystallization and Marangoni convection: final reports of sounding rocket experiments in fluid science and materials science
3. Droplet vaporization model for spray combustion calculations10.1016/0017-9310(89)90043-4 ↗
4. Interactive thermal and solutal Marangoni convection during compound semiconductor growth in a rectangular open boat10.1016/S0017-9310(00)00284-2 ↗
5. Onset of Marangoni instability of a two-component evaporating droplet10.1016/S0017-9310(02)00222-3 ↗
6. Internal circulation in a single droplet evaporating in a closed chamber10.1016/j.ijmultiphaseflow.2012.01.008 ↗
7. Evidence of oscillatory convection inside an evaporating multi-component droplet in a closed chamber10.1016/j.jcis.2012.04.046 ↗
8. Transient Marangoni convection in hanging evaporating drops10.1063/1.1772380 ↗
9. Thermocapillary flow effects on convective droplet evaporation10.1016/0017-9310(95)00137-X ↗
10. Infrared visualization of thermal motion inside a sessile drop deposited onto a heated surface10.1016/j.expthermflusci.2010.12.004 ↗
11. Natural convection in droplet evaporation10.1103/PhysRevE.54.1640 ↗
12. Flow transition within an evaporating binary mixture sessile drop10.1103/PhysRevLett.106.205701 ↗
13. Vortices, dissipation and flow transition in volatile binary drops10.1017/jfm.2014.220 ↗
14. Internal flow patterns of an evaporating multicomponent droplet on a flat surface10.1016/j.ijthermalsci.2015.09.006 ↗
15. Marangoni instability at a contaminated liquid vapour interface of a burning thin film10.1063/1.1562939 ↗
16. Oscillatory circulation inside evaporating methanol – water drops10.1016/j.ijmultiphaseflow.2018.02.006 ↗
17. Mandal · 2012
18. Benard instabilities in a binary-liquid layer evaporating into an inert gas10.1016/j.jcis.2010.04.043 ↗
19. Measurement of the surface concentration (liquid) of an evaporating multi-component droplet using pendant droplet method10.1007/s00348-009-0805-4 ↗
20. Surface tension of alcohol + water from 20 to 50 °C10.1021/je00019a016 ↗
21. New Nusselt and Sherwood numbers for arbitrary isopotential bodies at near zero Peclet and Rayleigh numbers
22. Energy stability theory for free surface problems: buoyancy thermocapillary layers10.1017/S0022112080000274 ↗
23. Surface tension and buoyancy effects in cellular convection10.1017/S0022112064000763 ↗
24. Buoyancy-surface tension instability by the method of energy10.1017/S0022112069002217 ↗
25. Evaporation-induced flow around a pendant droplet and its influence on evaporation10.1063/1.4935355 ↗