Experimental Investıgation Of Flow Dynamics Effects Of Cooling With A Circular Impınging Jet

Nevin Çelik; Celal Kıstak; Haydar Eren

Makale detayları

Experimental Investıgation Of Flow Dynamics Effects Of Cooling With A Circular Impınging Jet

Yazarlar:

Nevin Çelik | Celal Kıstak | Haydar Eren

Yayıncı:

Dicle University

Ana Başlıklar:

Makine Mühendisliği (Diğer)

Dergi:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.16 Issue 2, pp.385-396

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001352748

pISSN:

1309-8640

Anahtar kelimeler:

Özet:

 This study experimentally investigates the effects of a circular impinging jet on heat transfer and flow dynamics. Using an aluminum nozzle with a diameter of d13.8 mm, experiments were conducted within the Reynolds number range of 500025000. The nozzle-to-plate distance hd was varied between hd210 to evaluate the jets performance. Local Nusselt numbers Nu, stagnation point Nusselt number Nu0, and average Nusselt numbers Nuavg were analyzed in detail. The results demonstrated that both the nozzle-to-plate distance and Reynolds Re number significantly influence heat transfer performance. Increased Reynolds numbers and optimal hd distances led to enhanced heat transfer at the stagnation point. These findings highlight the potential of impinging jets for energy-efficient cooling applications. The optimal nozzle-to-plate distance for maximum heat transfer was found to be hd  6, with a 30.5 increase in Nusselt number at Re  25000. Additionally, turbulence intensity played a crucial role in heat transfer performance, particularly in the wall jet region, where it enhanced mixing and improved thermal efficiency.

 This study experimentally investigates the effects of a circular impinging jet on heat transfer and flow dynamics. Using an aluminum nozzle with a diameter of d13.8 mm, experiments were conducted within the Reynolds number range of 500025000. The nozzle-to-plate distance hd was varied between hd210 to evaluate the jets performance. Local Nusselt numbers Nu, stagnation point Nusselt number Nu0, and average Nusselt numbers Nuavg were analyzed in detail. The results demonstrated that both the nozzle-to-plate distance and Reynolds Re number significantly influence heat transfer performance. Increased Reynolds numbers and optimal hd distances led to enhanced heat transfer at the stagnation point. These findings highlight the potential of impinging jets for energy-efficient cooling applications. The optimal nozzle-to-plate distance for maximum heat transfer was found to be hd  6, with a 30.5 increase in Nusselt number at Re  25000. Additionally, turbulence intensity played a crucial role in heat transfer performance, particularly in the wall jet region, where it enhanced mixing and improved thermal efficiency.

 This study experimentally investigates the effects of a circular impinging jet on heat transfer and flow dynamics. Using an aluminum nozzle with a diameter of d13.8 mm, experiments were conducted within the Reynolds number range of 500025000. The nozzle-to-plate distance hd was varied between hd210 to evaluate the jets performance. Local Nusselt numbers Nu, stagnation point Nusselt number Nu0, and average Nusselt numbers Nuavg were analyzed in detail. The results demonstrated that both the nozzle-to-plate distance and Reynolds Re number significantly influence heat transfer performance. Increased Reynolds numbers and optimal hd distances led to enhanced heat transfer at the stagnation point. These findings highlight the potential of impinging jets for energy-efficient cooling applications. The optimal nozzle-to-plate distance for maximum heat transfer was found to be hd  6, with a 30.5 increase in Nusselt number at Re  25000. Additionally, turbulence intensity played a crucial role in heat transfer performance, particularly in the wall jet region, where it enhanced mixing and improved thermal efficiency.

 Bu çalışmada, dairesel çarpan jetin ısı transferi ve akış dinamiği üzerindeki etkileri deneysel olarak incelenmiştir. Çalışmada, jet akımı için çapı d 13.8 mm olan bir alüminyum boru kullanılarak, Reynolds sayısı 500025000 aralığında deneyler gerçekleştirilmiştir. Lüle ile çarpma yüzeyi arasındaki mesafe hd, farklı değerlerde değiştirilerek 210 jetin performansı değerlendirilmiştir. Yerel Nusselt sayıları Nu, durma noktasındaki Nusselt sayısı Nu0 ve ortalama Nusselt sayıları Nuavg detaylı şekilde analiz edilmiştir. Sonuçlar, hd mesafesinin ve Reynolds sayısının ısı transferi performansı üzerinde önemli etkileri olduğunu göstermiştir. Artan Reynolds sayısı ve uygun hd mesafeleri, durma noktasında daha yüksek ısı transferine olanak sağlamıştır. Bu bulgular, çarpan jetlerin enerji verimli soğutma uygulamalarındaki potansiyelini ortaya koymaktadır.

Makale detayları

Experimental Investıgation Of Flow Dynamics Effects Of Cooling With A Circular Impınging Jet

Yazarlar:

Nevin Çelik | Celal Kıstak | Haydar Eren

Yayıncı:

Dicle University

Ana Başlıklar:

Makine Mühendisliği (Diğer)

Dergi:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.16 Issue 2, pp.385-396

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001352748

pISSN:

1309-8640

Impinging jets

Heat Transfer

Turbulent intensityÇarpan jetler

Isı transferi

Türbülans şiddeti

Sayı

Makale detayları

Experimental Investıgation Of Flow Dynamics Effects Of Cooling With A Circular Impınging Jet

Yazarlar: Nevin Çelik | Celal Kıstak | Haydar Eren

Yayıncı: Dicle University

Ana Başlıklar: Makine Mühendisliği (Diğer)

Dergi: Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.16 Issue 2, pp.385-396

Belge Tipi: Makale

Yayın Tarihi: 6/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001352748

pISSN: 1309-8640

Impinging jets

Heat Transfer

Turbulent intensityÇarpan jetler

Isı transferi

Türbülans şiddeti

Sayı

Yazarlar:

Nevin Çelik | Celal Kıstak | Haydar Eren

Yayıncı:

Dicle University

Ana Başlıklar:

Makine Mühendisliği (Diğer)

Dergi:

Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi Vol.16 Issue 2, pp.385-396

Belge Tipi:

Makale

Yayın Tarihi:

6/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001352748

pISSN:

1309-8640