Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface
An experimental investigation is performed into the behavior of ethanol droplets impacting on a vibrating stainless steel surface. In characterizing the impact behavior, the dimensionless kinetic energy of the droplet prior to its impact on the surface is represented by the original Weber number ( W...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2017-11-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814017730004 |
| _version_ | 1818281800607203328 |
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| author | Tong-Bou Chang Rong-Horng Chen |
| author_facet | Tong-Bou Chang Rong-Horng Chen |
| author_sort | Tong-Bou Chang |
| collection | DOAJ |
| description | An experimental investigation is performed into the behavior of ethanol droplets impacting on a vibrating stainless steel surface. In characterizing the impact behavior, the dimensionless kinetic energy of the droplet prior to its impact on the surface is represented by the original Weber number ( We ). Meanwhile, the dimensionless relative impact kinetic energy of the droplet as it impacts the vibrating surface, and thus undergoes a change in its relative impact speed, is represented by the relative Weber number ( We r ). Impact experiments are performed for various values of the original Weber number We and vibration frequency f. The impact behavior in each case is classified as either post-spreading deposition or crown splashing. It is shown that for a static (non-vibrating) surface, the critical Weber number for the generation of splashing is We c = 400. Furthermore, for a given impact speed and vibration frequency, if no splashing occurs without vibration but splashing takes place after vibration, the difference between the original Weber number ( We ) and the critical Weber number ( We c ) is proportional to the additional impact Weber number provided by the vibrating surface, that is, ( We r − We c ). For a given relative impact speed, a higher vibration frequency ƒ results in a greater relative impact distance during splashing and a larger effective impact energy. Overall, the experimental results show that the relation between We and We r for the generation of splashing is given as We = ( − cf / ( 1 − cf ) ) W e r + ( 1 / ( 1 − cf ) ) W e c , where c = 3 . 45 × 10 − 4 . |
| first_indexed | 2024-12-13T00:10:53Z |
| format | Article |
| id | doaj.art-c6c55ab508f947779213bf83ef652a57 |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-12-13T00:10:53Z |
| publishDate | 2017-11-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-c6c55ab508f947779213bf83ef652a572022-12-22T00:05:58ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402017-11-01910.1177/1687814017730004Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surfaceTong-Bou ChangRong-Horng ChenAn experimental investigation is performed into the behavior of ethanol droplets impacting on a vibrating stainless steel surface. In characterizing the impact behavior, the dimensionless kinetic energy of the droplet prior to its impact on the surface is represented by the original Weber number ( We ). Meanwhile, the dimensionless relative impact kinetic energy of the droplet as it impacts the vibrating surface, and thus undergoes a change in its relative impact speed, is represented by the relative Weber number ( We r ). Impact experiments are performed for various values of the original Weber number We and vibration frequency f. The impact behavior in each case is classified as either post-spreading deposition or crown splashing. It is shown that for a static (non-vibrating) surface, the critical Weber number for the generation of splashing is We c = 400. Furthermore, for a given impact speed and vibration frequency, if no splashing occurs without vibration but splashing takes place after vibration, the difference between the original Weber number ( We ) and the critical Weber number ( We c ) is proportional to the additional impact Weber number provided by the vibrating surface, that is, ( We r − We c ). For a given relative impact speed, a higher vibration frequency ƒ results in a greater relative impact distance during splashing and a larger effective impact energy. Overall, the experimental results show that the relation between We and We r for the generation of splashing is given as We = ( − cf / ( 1 − cf ) ) W e r + ( 1 / ( 1 − cf ) ) W e c , where c = 3 . 45 × 10 − 4 .https://doi.org/10.1177/1687814017730004 |
| spellingShingle | Tong-Bou Chang Rong-Horng Chen Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface Advances in Mechanical Engineering |
| title | Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface |
| title_full | Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface |
| title_fullStr | Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface |
| title_full_unstemmed | Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface |
| title_short | Experimental investigation into deposition/splashing behavior of droplets impacting vibrating surface |
| title_sort | experimental investigation into deposition splashing behavior of droplets impacting vibrating surface |
| url | https://doi.org/10.1177/1687814017730004 |
| work_keys_str_mv | AT tongbouchang experimentalinvestigationintodepositionsplashingbehaviorofdropletsimpactingvibratingsurface AT ronghorngchen experimentalinvestigationintodepositionsplashingbehaviorofdropletsimpactingvibratingsurface |