MASS OR HEAT TRANSFER IN IMPINGING SINGLE, ROUND JETS EMITTED BY A BELL-SHAPED NOZZLE AND SHARP-ENDED ORIFICE

1986 ◽  
Author(s):  
Czeslaw Oleskowicz Popiel ◽  
Leon Boguslawski
Keyword(s):  
Heat Transfer ◽  
Round Jets ◽  
Shaped Nozzle

Numerical study of the oscillation amplitude effect on the heat transfer of oscillatory impinging round jets

2020 ◽  
Vol 79 (2) ◽  
pp. 70-82
Author(s):  
Saeed Jahangiri ◽  
Amir Hossein Shiravi ◽  
Mostafa Hosseinalipour ◽  
Arun S. Mujumdar
Keyword(s):  
Heat Transfer ◽  
Numerical Study ◽  
Oscillation Amplitude ◽  
Round Jets

Gas Turbine Blade Heat Transfer Augmentation by Impingement of Air Jets Having Various Configurations

1972 ◽  
Vol 94 (1) ◽  
pp. 51-58 ◽  
Author(s):  
W. Tabakoff ◽  
W. Clevenger
Keyword(s):  
Heat Transfer ◽  
Turbine Blade ◽  
Leading Edge ◽  
Solid Particles ◽  
Turbine Blade Cooling ◽  
Round Jets ◽  
Blade Cooling ◽  
Heat Transfer Augmentation ◽  
Air Jets ◽  
Mass Flow Rates

An experimental investigation of heat transfer characteristics for various configurations of air jets impinging on the leading edge inner surface of the blade wall is presented. Three configurations were investigated, namely a slot jet, a round jet row and an array of round jets. The effect on the heat transfer coefficient of injecting solid particles into the air flow is considered. The study treats an important class of turbine blade cooling for which small cooling mass flow rates are of interest. The experimental facility and procedures are described in detail. A theoretical technique is introduced for predicting the heat transfer in the case of the slot jet configuration. The results are compared to experimental data.

Heat transfer to impinging round jets with triangular tabs

2003 ◽  
Vol 46 (14) ◽  
pp. 2557-2569 ◽  
Author(s):  
N Gao ◽  
H Sun ◽  
D Ewing
Keyword(s):  
Heat Transfer ◽  
Round Jets

scholarly journals Impingement Heat Transfer by Jet Issuing from Cross-Shaped Nozzle.

1997 ◽  
Vol 63 (607) ◽  
pp. 979-985 ◽  
Author(s):  
Kenyu OYAKAWA ◽  
Minoru YAGA ◽  
Kenichi NASU ◽  
Izuru SENAHA ◽  
Shoichi MATSUDA ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Impingement Heat Transfer ◽  
Shaped Nozzle

Impingement heat transfer by jet issuing from a cross-shaped nozzle

1998 ◽  
Vol 27 (3) ◽  
pp. 192-204 ◽  
Author(s):  
Kenyu Oyakawa ◽  
Minoru Yaga ◽  
Kenichi Nasu ◽  
Izuru Senaha ◽  
Shoichi Matsuda ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Impingement Heat Transfer ◽  
Shaped Nozzle

Experimental Investigation of the Heat Transfer Performance of Arrays of Round Jets With Sharp-Edged Orifices and Peripheral Effluent: Convective Behavior of Water on a Heated Silicon Surface

2005 ◽  
Author(s):  
Levi A. Campbell ◽  
Michael J. Ellsworth ◽  
Madhusudan Iyengar ◽  
Robert Simons ◽  
Richard Chu
Keyword(s):  
Heat Transfer ◽  
Data Reduction ◽  
Silicon Surface ◽  
Heated Surface ◽  
Orifice Diameter ◽  
Plate Height ◽  
Round Jets ◽  
Heated Area ◽  
Data Reduction Technique ◽  
Effective Heat Transfer Coefficient

In the present work, deionized water is impinged onto a heated silicon surface using square arrays of round jets. Various numbers of jets and jet diameters are used over a heated area of constant size with the orifice plate height above the heater held constant. In these experiments, the jet orifices are sharp-edged and the fluid exhaust direction is parallel to the heated surface and leaves the chip periphery through a manifold. The resulting temperature and flow data are presented in physical units as well as in groups of dimensionless parameters. A correlation is presented to reasonably predict the experimental results of this study. The techniques used for data reduction and for experimentation, including the construction of the test module, are given in detail, including a numerical conduction simulation based data reduction technique and uncertainty analysis. The results shown include flow rates ranging from 6.1 cc/s to 63.18 cc/s resulting in Reynolds numbers based on orifice diameter ranging from 141 to 6670. Jet diameters investigated in this study range from 377 μm to 1.01 mm, in square arrays of 16 to 324 orifices on an area of 18.52 mm × 18.59 mm. The resulting maximum spatially averaged effective heat transfer coefficient achieved is 7.94 W/cm2K, and the maximum spatially averaged Nusselt number based on jet diameter is 79.4.

Heat transfer of cylindrical bodies when a system of round jets flows over them

1979 ◽  
Vol 37 (5) ◽  
pp. 1259-1261
Author(s):  
N. I. Syromyatnikov ◽  
L. K. Vasanova ◽  
V. I. Bader ◽  
A. M. Koryakin
Keyword(s):  
Heat Transfer ◽  
Round Jets
Sign in / Sign up

Export Citation Format

Share Document