Effect of cross-flow velocity on flow and heat transfer characteristics of impinging jet with low jet-to-plate distance

2014 ◽  
Vol 28 (7) ◽  
pp. 2909-2917 ◽  
Author(s):  
Makatar Wae-hayee ◽  
Perapong Tekasakul ◽  
Smith Eiamsa-ard ◽  
Chayut Nuntadusit
Keyword(s):  
Heat Transfer ◽  
Flow Velocity ◽  
Cross Flow ◽  
Impinging Jet ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer ◽  
Cross Flow Velocity ◽  
Plate Distance

Investigation of Flow and Heat Transfer Characteristics of Annular Impinging Jet

2014 ◽  
Vol 931-932 ◽  
pp. 1223-1227
Author(s):  
Watchara Musika ◽  
Makatar Wae-Hayee ◽  
Passakorn Vessakosol ◽  
Banyat Niyomwas ◽  
Chayut Nuntadusit
Keyword(s):  
Heat Transfer ◽  
Flow Behavior ◽  
Infrared Camera ◽  
Impinging Jet ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer ◽  
Annular Jet ◽  
Inner Diameter ◽  
Plate Distance

Flow and heat transfer characteristics of impinging jet from annular pipe were experimentally and numerically investigated. To generate annular jet, the cylindrical rod with 12.7 mm in diameter was inserted at center of pipe nozzle which has inner diameter (D) of 28.6 mm. The jet-to-plate distance (H) was examined in the range of 2D, 4D, 6D and 8D. The jet Reynolds number was fixed for all experiments at Re=20,000 based on averaged velocity and pipe inner diameter. The conventional jet was also studied for comparison. The temperature distribution on the impingement surface was measured using an infrared camera. The numerical simulation was carried out to visualize the flow behavior. The results show that the heat transfer of annular jet is higher than that the case of conventional pipe jet at low jet-to-plate distance (H=2D); however, the ones of annular and conventional jet are comparable when jet-to-plate distance becomes higher than H=6D.

0504 Flow and heat transfer characteristics of rotating impinging jet using DNS

2014 ◽  
Vol 2014 (0) ◽  
pp. _0504-1_-_0504-4_
Author(s):  
Naoki KOIKE ◽  
Koichi TSUJIMOTO ◽  
Toshihiko SHAKOUCHI ◽  
Toshitake ANDO
Keyword(s):  
Heat Transfer ◽  
Impinging Jet ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Flow And Heat Transfer
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