On the individual droplet growth modeling and heat transfer analysis in dropwise condensation

Name: On the individual droplet growth modeling and heat transfer analysis in dropwise condensation
Author: Azarifar, Mohammad, Budaklı, M., Başol, Altuğ Melik, Arık, Mehmet

İsim	On the individual droplet growth modeling and heat transfer analysis in dropwise condensation
Yazar	Azarifar, Mohammad, Budaklı, M., Başol, Altuğ Melik, Arık, Mehmet
Basım Tarihi:	2021-10
Basım Yeri	- IEEE
Konu	Analytical models, Boundary conditions, Convection, Droplet growth, Dropwise condensation, Heat transfer, Marangoni convection, Numerical models, Resistance, Substrates, Thermal resistance, Vapor chamber
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2156-3950
Kayıt Numarası	184ca20a-1222-4a25-84e7-e5fb75d8d64a
Lokasyon	Mechanical Engineering
Tarih	2021-10
Notlar	EVATEG Center ; German Research Foundation (DFG)
Örnek Metin	The low convective coefficient at condenser part of spreaders and vapor chambers due to film blanket blocking encourages utilizing dropwise condensation (DWC). Challenges exist in the experimental characterization of DWC, which includes dependency on numerous parameters and more importantly measurement difficulties due to low driving temperature differences. This highlights the necessity of accurate modeling of this complex process. The widely used macroscale modeling process of DWC, known as classical analytical modeling of DWC, typically combines state of the art droplet size distribution model with a simplified shape-factor based heat transfer analysis of a single droplet which contains major simplifications such as conduction-only through the bulk liquid, hemispheric droplet shape, and homogeneously distributed temperature over the entire droplet surface. Recent numerical approaches included effect of Marangoni convection and implanted realistic thermal boundary conditions on liquid-vapor interface and reported significant errors of classical modeling. Based on a novel dynamic numerical approach which incorporates surface tension, Marangoni convection, and active mass transfer at the liquid-vapor interface, droplet growth phenomenon has been modeled in this study. Notable differences of droplet growth and flow field have been observed resulted from dynamic growth modeling of the droplet as more than 70% heat transfer rate underestimation of quasi steady modeling in 1 mm droplets with contact angle of 150° is observed. Effect of shape change due to gravity on the heat and mass transfer analysis of individual droplets found to be negligible.
DOI	10.1109/TCPMT.2021.3081524
Cilt	11

Kaynağa git Özyeğin Üniversitesi

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Özyeğin Üniversitesi

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On the individual droplet growth modeling and heat transfer analysis in dropwise condensation

Yazar Azarifar, Mohammad, Budaklı, M., Başol, Altuğ Melik, Arık, Mehmet

Basım Tarihi 2021-10

Basım Yeri - IEEE

Konu Analytical models, Boundary conditions, Convection, Droplet growth, Dropwise condensation, Heat transfer, Marangoni convection, Numerical models, Resistance, Substrates, Thermal resistance, Vapor chamber

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2156-3950

Kayıt Numarası 184ca20a-1222-4a25-84e7-e5fb75d8d64a

Lokasyon Mechanical Engineering

Tarih 2021-10

Notlar EVATEG Center ; German Research Foundation (DFG)

Örnek Metin The low convective coefficient at condenser part of spreaders and vapor chambers due to film blanket blocking encourages utilizing dropwise condensation (DWC). Challenges exist in the experimental characterization of DWC, which includes dependency on numerous parameters and more importantly measurement difficulties due to low driving temperature differences. This highlights the necessity of accurate modeling of this complex process. The widely used macroscale modeling process of DWC, known as classical analytical modeling of DWC, typically combines state of the art droplet size distribution model with a simplified shape-factor based heat transfer analysis of a single droplet which contains major simplifications such as conduction-only through the bulk liquid, hemispheric droplet shape, and homogeneously distributed temperature over the entire droplet surface. Recent numerical approaches included effect of Marangoni convection and implanted realistic thermal boundary conditions on liquid-vapor interface and reported significant errors of classical modeling. Based on a novel dynamic numerical approach which incorporates surface tension, Marangoni convection, and active mass transfer at the liquid-vapor interface, droplet growth phenomenon has been modeled in this study. Notable differences of droplet growth and flow field have been observed resulted from dynamic growth modeling of the droplet as more than 70% heat transfer rate underestimation of quasi steady modeling in 1 mm droplets with contact angle of 150° is observed. Effect of shape change due to gravity on the heat and mass transfer analysis of individual droplets found to be negligible.

DOI 10.1109/TCPMT.2021.3081524

Cilt 11