Experimental investigation of the heat transfer characteristics of a pulsating impinging jet on a flat surface
Yükleniyor...
Dosyalar
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
In this research, cooling of the target surface consisting of a flat plate with constant heat flux using a pulsating impinging jet is investigated experimentally. In the investigations, the jet Reynolds number (Rej), Prandtl number (Pr) and geometric parameters were kept constant and the effects of these parameters on the heat transfer were analyzed while changing the distance between the jet and the target surface (H/D), amplitude (Ao) and jet frequency (Wo). Experiments were performed for three different blowing distances, four different amplitudes and six different frequencies. The pulsating jet is used as an active heat transfer enhancement method, temperature measurements were made in detail on the experimental setup and Nusselt numbers were calculated with the based on measured temperatures. The results are expressed as a function of dimensionless numbers, and the results are compared with the heat transfer results of continuous jet impingement. Experimental results showed that the pulsating jet has a significant effect on heat transfer enhancement. It was observed that the pulsating jet significantly increased the heat transfer compared to the continuous jets.
Açıklama
Anahtar Kelimeler
Pulsating Jet, Heat Transfer Enhancement, Target Surface, Nusselt Number
Kaynak
ournal of the Faculty of Engineering and Architecture of Gazi University
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
38
Sayı
2
