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Journals / Uluslararası Mühendislik Araştırma ve Geliştirme Dergisi / 2023 / Cilt: 15 - Sayı: 1

Experimental Investigation of the Effect of Hydrophobic Coating on Aerodynamic Parameters of Airfoils

Hidrofobik Kaplamanın Kanat Profillerinin Aerodinamik Parametrelerine Etkisinin Deneysel İncelenmesi

Fevzi ŞAHİN
İsmayil İSMAİLOV
Hakan ÖZCAN
Pages
186–194
Publication Date
2023-01-31
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results showed that when the hydrophobic and superhydrophobic properties to the normal (hydrophilic) airfoil were introduced, the lift coefficients of airfoil increased by an average of 15% and 23%, respectively for all the studied attack angles.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, an experimental study was carried out on NACA 4418 wing profile.
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Key Findings & Data:The three different surfaces that are as normal (θ = 59o <90o: hydrophilic), hydrophobic (θ = 93o> 90o) and superhydrophobic (θ = 154o> 150o) were obtained.
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Conclusion & Impact:The results showed that when the hydrophobic and superhydrophobic properties to the normal (hydrophilic) airfoil were introduced, the lift coefficients of airfoil increased by an average of 15% and 23%, respectively for all the studied attack angles.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kanat profili · Sprey kaplama · Hidrofobik

Abstract

In this study, an experimental study was carried out on NACA 4418 wing profile. The airfoil was covered with two different materials by spray coating method, the degrees of wetting (water droplet contact angle with the surface, θ) were determined. The three different surfaces that are as normal (θ = 59o <90o: hydrophilic), hydrophobic (θ = 93o> 90o) and superhydrophobic (θ = 154o> 150o) were obtained. For these three different situations, the lift and drag coefficients were determined experimentally in the wind tunnel at a free flow velocity of 15 m / s (Re = 253.196) and 6 different angle of attack (-10 °, -5 °, 0 °, 5 °, 10 °, 15 °) and compared with each other. The results showed that when the hydrophobic and superhydrophobic properties to the normal (hydrophilic) airfoil were introduced, the lift coefficients of airfoil increased by an average of 15% and 23%, respectively for all the studied attack angles. In addition, adding hydrophobic and super hydrophobic properties to the normal (hydrophilic) airfoil decreased the drag coefficients of the airfoil by 12% and 20%, respectively for all the studied attack angles.

Özet

Bu çalışmada NACA 4418 kanat profile üzerinde deneysel bir çalışma yürütülmüştür. Kanat profili spray kaplama yöntemi ile iki farklı malzeme ile kaplanmış, ıslanırlık derecesi (su damlasının yüzey ile temas açısı, θ) belirlenmiştir. Normal (θ=59o<90o: hidrofilik), hidrofobik (θ=93o>90o) ve süperhidrofobik (θ=154o>150o) olmak üzere üç farklı kanat profile yüzeyi elde edilmiştir. Bu üç farklı durum için, kaldırma ve sürüklenme katsayıları, 15 m/s (Re=253.196) serbest akım hızında ve 6 farklı hücum açısında (-10°, -5°, 0°, 5°, 10°, 15°) rüzgar tünelinde deneysel olarak belirlenerek birbiriyle karşılaştırılmıştır. Sonuçlar, normal (hidrofilik) kanat profiline, hidrofobik ve süperhidrofobik özellik kazandırılmasının kanat profilinin kaldırma katsayılarını tüm hücum açıları dikkate alındığında sırasıyla ortalama %15 ve %23 oranında iyileştirdiğini göstermiştir. Ayrıca normal (hidrofilik) kanat profiline, hidrofobik ve süperhidrofobik özellik kazandırılması kanat profilinin sürüklenme katsayılarını tüm hücum açıları dikkate alındığında sırasıyla ortalama %12 ve %20 oranında düşürmüştür.

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Cite This Article

ŞAHİN, F., İSMAİLOV, İ., ÖZCAN, H. (2023). Experimental Investigation of the Effect of Hydrophobic Coating on Aerodynamic Parameters of Airfoils. Uluslararası Mühendislik Araştırma ve Geliştirme Dergisi, Cilt: 15 - Sayı: 1, 186–194. https://ajindex.com/articles/889047

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