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Simulation of water droplet impingement on a heated surface-single and double droplets
المؤلفون المشاركون
المصدر
Journal of Engineering and Sustainable Development
العدد
المجلد 25، العدد 4 (31 أغسطس/آب 2021)، ص ص. 95-113، 19ص.
الناشر
الجامعة المستنصرية كلية الهندسة
تاريخ النشر
2021-08-31
دولة النشر
العراق
عدد الصفحات
19
التخصصات الرئيسية
الموضوعات
الملخص EN
The present numerical work is concerned with the single drop and double drops impingement on a heated surface.
Fluid flow and heat transfer coefficients were modeled using a volume of fluid (VOF) code.
The stainless –steel thin plate surface is uniformly heated to reach a constant temperature at (50C°), this was done by using relatively thicker plate underneath the heated plate.
The thick plate is made of high conductivity aluminum alloy 2mm thickness.
Relatively a lower temperature water drop is used for cooling to ensure that drop temperature remains below the boiling point of water.
The drop –plate initial impingement distances were varied in the range (10-60) cm which represent an impact velocity in the range (1.4-3.4) m/s.
The single drop fluid flow simulation results are compared with that in the literature, while the heat transfer fluid flow results are represented as instantuous heat transfer coefficient variation as alternative to values of heat flux on the surface.
Double drops impingement results are then presented and its features are compared to the single drop.
Results show that the flow characteristics for the double drops are similar to the single drop at small distances with smaller coverage areas during impingement with lower heat removal rates.
As distances increase rebound and splash occurs leading to bigger coverage areas during impingement with relatively smaller heat coefficients compared to the single drop one.
The present results shows the same behavior for drop deformation when compared with M.
pasandideh-Fard et al.
[1] numerical results with an agreement of 90 % and 95 % in calculations the spread factor and impact velocities respectively.
The calculated average heat coefficients show acceptable values with that given in litreture The present numerical work is concerned with the single drop and double drops impingement on a heated surface.
Fluid flow and heat transfer coefficients were modeled using a volume of fluid (VOF) code.
The stainless –steel thin plate surface is uniformly heated to reach a constant temperature at (50C°), this was done by using relatively thicker plate underneath the heated plate.
The thick plate is made of high conductivity aluminum alloy 2mm thickness.
Relatively a lower temperature water drop is used for cooling to ensure that drop temperature remains below the boiling point of water.
The drop –plate initial impingement distances were varied in the range (10-60) cm which represent an impact velocity in the range (1.4-3.4) m/s.
The single drop fluid flow simulation results are compared with that in the literature, while the heat transfer fluid flow results are represented as instantuous heat transfer coefficient variation as alternative to values of heat flux on the surface.
Double drops impingement results are then presented and its features are compared to the single drop.
Results show that the flow characteristics for the double drops are similar to the single drop at small distances with smaller coverage areas during impingement with lower heat removal rates.
As distances increase rebound and splash occurs leading to bigger coverage areas during impingement with relatively smaller heat coefficients compared to the single drop one.
The present results shows the same behavior for drop deformation when compared with M.
pasandideh-Fard et al.
[1] numerical results with an agreement of 90 % and 95 % in calculations the spread factor and impact velocities respectively.
The calculated average heat coefficients show acceptable values with that given in litreture
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Nama, Rua B.& Rasul, Adnan A.. 2021. Simulation of water droplet impingement on a heated surface-single and double droplets. Journal of Engineering and Sustainable Development،Vol. 25, no. 4, pp.95-113.
https://search.emarefa.net/detail/BIM-1271298
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Nama, Rua B.& Rasul, Adnan A.. Simulation of water droplet impingement on a heated surface-single and double droplets. Journal of Engineering and Sustainable Development Vol. 25, no. 4 (2021), pp.95-113.
https://search.emarefa.net/detail/BIM-1271298
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Nama, Rua B.& Rasul, Adnan A.. Simulation of water droplet impingement on a heated surface-single and double droplets. Journal of Engineering and Sustainable Development. 2021. Vol. 25, no. 4, pp.95-113.
https://search.emarefa.net/detail/BIM-1271298
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
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رقم السجل
BIM-1271298
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