Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes
The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the...
| Main Authors: | , , |
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| Format: | Article |
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Trans Tech Publications, Switzerland
2014
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| Online Access: | http://umpir.ump.edu.my/id/eprint/7700/ |
| _version_ | 1848818063706685440 |
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| author | Abdullah, Bawadi Vo, Dai-Viet N. Chowdhury, Sujan |
| author_facet | Abdullah, Bawadi Vo, Dai-Viet N. Chowdhury, Sujan |
| author_sort | Abdullah, Bawadi |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the defect formation. The effect of temperature distribution on surface tension
gradient was incorporated into the model, to quantify defect formation in drying coating. The results showed that, temperature-induced surface tension gradient plays a major role in defect formation while the effect of pressure gradient is insignificant. The evaporation rate and viscosity affect the defect thickness and spread, and also the defect formation time. The temperature gradient
seems to have the largest influence on surface tension gradient, thus defect formation. The model developed can be used as a process analysis tool in industrial applications of fluorescent tube coating. |
| first_indexed | 2025-11-15T01:31:42Z |
| format | Article |
| id | ump-7700 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| last_indexed | 2025-11-15T01:31:42Z |
| publishDate | 2014 |
| publisher | Trans Tech Publications, Switzerland |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-77002018-05-14T07:34:05Z http://umpir.ump.edu.my/id/eprint/7700/ Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes Abdullah, Bawadi Vo, Dai-Viet N. Chowdhury, Sujan TP Chemical technology The coating of the fluorescent-lamp material inside the fluorescent tube is prone to defect such as dark line formation. A one-dimensional mathematical model based on Navier-Stokes equation, which describes the flow of drying coating on horizontal planar substrates, was developed to investigate the defect formation. The effect of temperature distribution on surface tension gradient was incorporated into the model, to quantify defect formation in drying coating. The results showed that, temperature-induced surface tension gradient plays a major role in defect formation while the effect of pressure gradient is insignificant. The evaporation rate and viscosity affect the defect thickness and spread, and also the defect formation time. The temperature gradient seems to have the largest influence on surface tension gradient, thus defect formation. The model developed can be used as a process analysis tool in industrial applications of fluorescent tube coating. Trans Tech Publications, Switzerland 2014 Article PeerReviewed Abdullah, Bawadi and Vo, Dai-Viet N. and Chowdhury, Sujan (2014) Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes. Advanced Materials Research, 917. pp. 181-188. ISSN 1022-6680 (print), 1662-8985 (online). (Published) http://dx.doi.org/10.4028/www.scientific.net/AMR.917.181 DOI: 10.4028/www.scientific.net/AMR.917.181 |
| spellingShingle | TP Chemical technology Abdullah, Bawadi Vo, Dai-Viet N. Chowdhury, Sujan Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title | Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title_full | Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title_fullStr | Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title_full_unstemmed | Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title_short | Modeling the Effect of Temperature-induced Surface Tension Gradient in Coating Processes |
| title_sort | modeling the effect of temperature-induced surface tension gradient in coating processes |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/7700/ http://umpir.ump.edu.my/id/eprint/7700/ http://umpir.ump.edu.my/id/eprint/7700/ |