Modelling of frost formation and growth on microstuctured surface

Muntaha, Md. Ali; Haider, Md. Mushfique; Rahman, Ashiqur

doi:10.1063/1.4958433

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Rahman and Jacobi investigated the impact of microgroove design on the thickness of the frost layer and its density. Muntaha et al subsequently developed a mathematical model to predict the frost growth on the microgroove surfaces.…”

Section: Interaction Of Liquid With Surfacesmentioning

confidence: 99%

Fundamentals and Applications of Surface Wetting

Josyula,

Kumar Malla,

Thomas

et al. 2024

Langmuir

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In an era defined by an insatiable thirst for sustainable energy solutions, responsible water management, and cutting-edge lab-on-a-chip diagnostics, surface wettability plays a pivotal role in these fields. The seamless integration of fundamental research and the following demonstration of applications on these groundbreaking technologies hinges on manipulating fluid through surface wettability, significantly optimizing performance, enhancing efficiency, and advancing overall sustainability. This Review explores the behavior of liquids when they engage with engineered surfaces, delving into the farreaching implications of these interactions in various applications. Specifically, we explore surface wetting, dissecting it into three distinctive facets. First, we delve into the fundamental principles that underpin surface wetting. Next, we navigate the intricate liquid−surface interactions, unraveling the complex interplay of various fluid dynamics, as well as heat-and mass-transport mechanisms. Finally, we report on the practical realm, where we scrutinize the myriad applications of these principles in everyday processes and real-world scenarios.

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Section: Interaction Of Liquid With Surfacesmentioning

confidence: 99%

Fundamentals and Applications of Surface Wetting

Josyula,

Kumar Malla,

Thomas

et al. 2024

Langmuir

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“…Limited data exist on the freezing process in the heat pipes. Current research on freezing via condensation (i.e., condensation frosting) focuses primarily on flat surfaces [12][13][14] or surfaces designed to delay freezing or promote easy ice removal, such as coatings and hydrophobic surfaces [15][16][17][18][19], micropillars, microgrooves [20][21][22][23], chemical etching, and nanopillars [21,[23][24][25][26]. Surface characteristics, such as hydrophobicity [15,23], surface topography [22,23,[26][27][28], surface roughness [21,29], and surface tension [21,29] affect behaviors such as droplet nucleation, droplet sizes, time freezing begins, and freezing propagation.…”

mentioning

confidence: 99%

Physical mechanisms for delaying condensation freezing on grooved and sintered wicking surfaces

Stallbaumer-Cyr

Derby

Betz

2022

Applied Physics Letters

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Heat pipes are passive heat transfer devices crucial for systems on spacecraft; however, they can freeze when exposed to extreme cold temperatures. The research on freezing mechanisms on wicked surfaces, such as those found in heat pipes, is limited. Surface characteristics, including surface topography, have been found to impact freezing. This work investigates freezing mechanisms on wicks during condensation freezing. Experiments were conducted in an environmental chamber at 22 °C and 60% relative humidity on three types of surfaces (i.e., plain copper, sintered heat pipe wicks, and grooved heat pipe wicks). The plain copper surface tended to freeze via ice bridging—consistent with other literature—before the grooved and sintered wicks at an average freezing time of 4.6 min with an average droplet diameter of 141.9 ± 58.1 μm at freezing. The grooved surface also froze via ice bridging but required, on average, almost double the length of time the plain copper surface took to freeze, 8.3 min with an average droplet diameter of 60.5 ± 27.9 μm at freezing. Bridges could not form between grooves, so initial freezing for each groove was stochastic. The sintered wick's surface could not propagate solely by ice bridging due to its topography, but also employed stochastic freezing and cascade freezing, which prompted more varied freezing times and an average of 10.9 min with an average droplet diameter of 97.4 ± 32.9 μm at freezing. The topography of the wicked surfaces influenced the location of droplet nucleation and, therefore, the ability for the droplet-to-droplet interaction during the freezing process.

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