Drop Behavior on Micro-Structured Superhydrophobic Coating

کمالی مقدم, رامین; طیبی رهنی, محمد; هیات داودیان, سالار; میلر, رینهارد

doi:10.30699/jsst.2020.1241

نوع مقاله : مقالة‌ تحقیقی‌ (پژوهشی‌)

نویسندگان

¹ دانشیار، پژوهشگاه هوافضا، وزارت علوم، تحقیقات و فناوری، تهران، ایران

² استاد، دانشکده مهندسی هوافضا، دانشگاه صنعتی شریف، تهران، ایران

³ دانشکده مهندسی هوافضا، دانشگاه صنعتی شریف، تهران، ایران

⁴ دانشگاه ماکس پلانک، آلمان

https://doi.org/10.30699/jsst.2020.1241

چکیده

Superhydrophobic coatings can be made by creating a micro-sized structure on a surface providing super-repellent properties. Numerical simulation of drop dynamics and motion on a superhydrophobic surface helps us understand control and building surface textures and find optimum micro structured coatings of maximum hydrophobicity. In the present work, the dynamics of drops on superhydrophobic inclined micro-structured surfaces is studied, using a finite element method. The governing equations and important dimensionless numbers are described and a numerical algorithm is introduced. The validation of the numerical algorithm is performed by simulation of drop motion attached to an inclined surface. In addition, droplet movement on the micro structured surface is numerically simulated on smooth and microstructured surfaces in the same conditions. Comparison of the results shows the effect of microstructured coating on the surface hydrophobicity properties.

کلیدواژه‌ها

موضوعات

طراحی سیستمی و شبیه‌سازی سامانه‌های فضایی و پیشرانه‌های فضایی

عنوان مقاله [English]

Drop Behavior on Micro-Structured Superhydrophobic Coating

نویسندگان [English]

Ramin Kamali Moghadam ¹
Mohamad Taeibi Rahni ²
Salar Heyat Davoudian ³
Reinhard Miller ⁴

¹ Associate Professor, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

² Professor, Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran

³ Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran

⁴ Max Planck Institute of Colloids and Interfaces, Germany

چکیده [English]

Superhydrophobic coatings can be made by creating a micro-sized structure on a surface providing super-repellent properties which has many applications in aerospace, defense, automotive, biomedical and engineering. Numerical simulation of drop dynamics and motion on a superhydrophobic surface helps us understand control and building surface textures and find optimum micro structured coatings of maximum hydrophobicity. In the present work, the dynamics of drops on superhydrophobic inclined micro-structured surfaces is studied, using a finite element method. Effect of microstructures on droplet behavior on a superhydrophobic surface is investigated using different microstructures. The governing equations and important dimensionless numbers are described and a numerical algorithm is introduced. The validation of the numerical algorithm is performed by simulation of drop motion attached to an inclined surface. In addition, droplet movement on the micro structured surface is numerically simulated on smooth and microstructure surfaces in the same conditions. Comparison of the results shows the effect of microstructure coating on the surface hydrophobicity properties.

کلیدواژه‌ها [English]

Micro-Structured
Superhydrophobic Surfaces
Numerical Simulation
Drop Motion

مراجع

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علوم و فناوری فضایی

Drop Behavior on Micro-Structured Superhydrophobic Coating

مراجع

مراجع

دوره 15، ویژه نامه انگلیسی - شماره پیاپی 51
فروردین 1401
صفحه 25-33

Drop Behavior on Micro-Structured Superhydrophobic Coating

مراجع

مراجع

دوره 15، ویژه نامه انگلیسی - شماره پیاپی 51فروردین 1401صفحه 25-33

دوره 15، ویژه نامه انگلیسی - شماره پیاپی 51
فروردین 1401
صفحه 25-33