Flow and heat transfer characteristics of inclined jet impingement on a flat plate

Calisir, Tamer; Lak, Amir; Baskaya, Senol

doi:10.2339/politeknik.543267

Flow and heat transfer characteristics of inclined jet impingement on a flat plate

Amir LAK, (Gazi Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, Ankara, Türkiye)

Tamer ÇALIŞIR, (Gazi Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, Ankara, Türkiye)

Şenol BAŞKAYA (Gazi Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, Ankara, Türkiye)

Politeknik Dergisi

4 0

Yıl: 2020 Cilt: 23 Sayı: 3 Sayfa Aralığı: 697 - 706 Metin Dili: İngilizce DOI: 10.2339/politeknik.543267 İndeks Tarihi: 29-07-2022

Flow and heat transfer characteristics of inclined jet impingement on a flat plate

Öz:

The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flowfield and heat transfer characteristics. Main purpose of the study was to show the effects of inclined jet impingement on flowcharacteristics, which affects the heat transfer on a surface with a constant heat flux. Simulations were performed for differentdimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re <30000). The heat transfer and fluid flow characteristics have been discussed using temperature contours and velocity vectors. Initialsimulation results have been validated with experimental data from the literature, and a fairly good agreement has been achieved.Results showed that by decreasing the inclination angle, a decrease in the maximum heat transfer occurs. The ratio of the maximumNusselt number to the stagnation Nusselt number increases as the jet angle is increased.

Anahtar Kelime:

Düz Yüzey Üzerine Çarpan Eğik Jetin Akış ve Isı Transferi Karakteristikleri

Öz:

Yatay düz bir yüzeye çarpan türbülanslı eğik jetlerin etkileri, akış alanı ve ısı transferi özellikleri bakımından sayısal olarak incelenmiştir. Çalışmada, sabit ısı akısına sahip bir yüzeyde ısı transferini etkileyen eğik jet çarpmasının akış karakteristiklerine etkisinin gösterilmesi amaçlanmıştır. Farklı boyutsuz jet-plaka mesafeleri (2 < H/D < 8), jet eğim açıları (45° < α < 90°) ve Reynolds sayıları (1500 < Re < 30000) için simülasyonlar gerçekleştirilmiştir. Isı transferi ve akış karakteristikleri, sıcaklık konturları ve hız vektörleri kullanılarak irdelenmiştir. Simülasyon sonuçları literatürde yer alan deneysel veriler ile doğrulanmış ve oldukça iyi bir uyum sağlanmıştır. Jet eğim açısının azaltılması ile birlikte maksimum ısı transferinde azalmanın olduğu sonuçlardan görülmüştür. Maksimum Nusselt sayısının durma noktası Nusselt sayısına oranı jet eğim açısının artması ile birlikte artmaktadır.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Lak A, Calisir T, Baskaya S (2020). Flow and heat transfer characteristics of inclined jet impingement on a flat plate. , 697 - 706. 10.2339/politeknik.543267
Chicago	Lak Amir,Calisir Tamer,Baskaya Senol Flow and heat transfer characteristics of inclined jet impingement on a flat plate. (2020): 697 - 706. 10.2339/politeknik.543267
MLA	Lak Amir,Calisir Tamer,Baskaya Senol Flow and heat transfer characteristics of inclined jet impingement on a flat plate. , 2020, ss.697 - 706. 10.2339/politeknik.543267
AMA	Lak A,Calisir T,Baskaya S Flow and heat transfer characteristics of inclined jet impingement on a flat plate. . 2020; 697 - 706. 10.2339/politeknik.543267
Vancouver	Lak A,Calisir T,Baskaya S Flow and heat transfer characteristics of inclined jet impingement on a flat plate. . 2020; 697 - 706. 10.2339/politeknik.543267
IEEE	Lak A,Calisir T,Baskaya S "Flow and heat transfer characteristics of inclined jet impingement on a flat plate." , ss.697 - 706, 2020. 10.2339/politeknik.543267
ISNAD	Lak, Amir vd. "Flow and heat transfer characteristics of inclined jet impingement on a flat plate". (2020), 697-706. https://doi.org/10.2339/politeknik.543267

APA	Lak A, Calisir T, Baskaya S (2020). Flow and heat transfer characteristics of inclined jet impingement on a flat plate. Politeknik Dergisi, 23(3), 697 - 706. 10.2339/politeknik.543267
Chicago	Lak Amir,Calisir Tamer,Baskaya Senol Flow and heat transfer characteristics of inclined jet impingement on a flat plate. Politeknik Dergisi 23, no.3 (2020): 697 - 706. 10.2339/politeknik.543267
MLA	Lak Amir,Calisir Tamer,Baskaya Senol Flow and heat transfer characteristics of inclined jet impingement on a flat plate. Politeknik Dergisi, vol.23, no.3, 2020, ss.697 - 706. 10.2339/politeknik.543267
AMA	Lak A,Calisir T,Baskaya S Flow and heat transfer characteristics of inclined jet impingement on a flat plate. Politeknik Dergisi. 2020; 23(3): 697 - 706. 10.2339/politeknik.543267
Vancouver	Lak A,Calisir T,Baskaya S Flow and heat transfer characteristics of inclined jet impingement on a flat plate. Politeknik Dergisi. 2020; 23(3): 697 - 706. 10.2339/politeknik.543267
IEEE	Lak A,Calisir T,Baskaya S "Flow and heat transfer characteristics of inclined jet impingement on a flat plate." Politeknik Dergisi, 23, ss.697 - 706, 2020. 10.2339/politeknik.543267
ISNAD	Lak, Amir vd. "Flow and heat transfer characteristics of inclined jet impingement on a flat plate". Politeknik Dergisi 23/3 (2020), 697-706. https://doi.org/10.2339/politeknik.543267