scholarly journals A fundamental study of the heat transfer and flow situation around spacers. In the case of a single row of several cylindrical rods in cross flow.

1988 ◽  
Vol 54 (500) ◽  
pp. 925-933 ◽  
Author(s):  
Koichi ICHIMlYA ◽  
Norio AKINO ◽  
Tomoaki KUNUGI ◽  
Koji MITSUSHIRO
Keyword(s):  
Heat Transfer ◽  
Cross Flow ◽  
Fundamental Study ◽  
Single Row ◽  
Flow Situation

scholarly journals QUANTIFICATION OF ERRORS IN THE WILSON PLOT APPLIED TO CONDENSATION ON THE OUTSIDE OF TUBES

2010 ◽  
Vol 41 (1) ◽  
pp. 31-41
Author(s):  
Bryce M. Burnside ◽  
Bodius Salam ◽  
David A. McNeil
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Temperature Drop ◽  
Cross Flow ◽  
Random Errors ◽  
Horizontal Tubes ◽  
Flow Situation ◽  
Wilson Plot

In condensation over horizontal tubes where the wall temperature is not measured directly, the Wilson plot is used to determine the cooling side heat transfer coefficient. Conventionally, the variation in Nusselt number, Nu, with condensate side temperature drop, DTs, which accompanies change of cooling side flowrate, is assumed to be Nu µ 1/DTsn with n = 0.25. This is the free convention condensation value. In this paper a technique is devised, not only to check the accuracy of this assumption in the usual vapor side cross flow situation, but also to determine the effect on this accuracy of allowing the index n to vary. In a case study the best agreement between DTs assumed and the value obtained using the cooling side heat transfer coefficient which resulted from the Wilson plot, occurred at n = 0.21. Based on the random errors in the measured data, a linear regression taking into account the errors in both Wilson plot coordinates gave the cooling side heat transfer coefficient and its uncertainty.Keywords: Heat transfer; condensation; Wilson plots.DOI: 10.3329/jme.v41i1.5360Journal of Mechanical Engineering, Vol. ME 41, No. 1, June 2010 31-41

Fundamental study of heat transfer and flow situation around a spacer (in the case of a cylindrical rod as a spacer)

1988 ◽  
Vol 31 (11) ◽  
pp. 2215-2225 ◽  
Author(s):  
Koichi Ichimiya ◽  
Norio Akino ◽  
Tomoaki Kunugi ◽  
Koji Mitsushiro
Keyword(s):  
Heat Transfer ◽  
Fundamental Study ◽  
Flow Situation

An Experimental Study of Detailed Flow and Heat Transfer Analysis in a Single Row Narrow Impingement Channel

2014 ◽  
Author(s):  
Jahed Hossain ◽  
Lucky V. Tran ◽  
Jayanta S. Kapat ◽  
Erik Fernandez ◽  
Rajan Kumar
Keyword(s):  
Heat Transfer ◽  
Flow Characteristics ◽  
Cross Flow ◽  
Turbulence Models ◽  
Heat Transfer Analysis ◽  
Temperature Sensitive ◽  
Single Row ◽  
Flow Physics ◽  
Flow And Heat Transfer ◽  
Target Wall

An experimental investigation of detailed flow and heat transfer in a narrow impingement channel was studied; the channel included 15 inline jets in a single row with a jet-to-target wall distance of 3 jet diameters. The spanwise length of the channel was 4 jet diameters, and a streamwise jet spacing of 5 jet diameters was considered for the current study. Both the flow physics and heat transfer tests were run at an average jet Reynolds number of 30,000. Temperature sensitive paint was used to study heat transfer at the target wall. Along with other parameters, jet-to-jet interaction in a narrow row impingement channel plays a significant role on heat transfer distribution at the side and target walls as the self-induced jet cross flow tends to bend the downstream jets. The present work shows detailed information of flow physics using Particle Image Velocimetry (PIV). PIV measurements were taken at planes normal to the target wall along the jet centerline for several jets. The flow field and heat transfer data was compared between the experiment and CFD in order to understand the relationship between flow characteristics and heat transfer. The experimental data gathered from PIV can be used as benchmark data for validating the current state of the art RANS turbulence models as well as for Large Eddy Simulation (LES).

scholarly journals FEATURES OF FLOWING ROUND AND HEAT TRANSFER OF ONE-ROW OF CYLINDERS WITH SPIRAL GROOVES IN INTERACTION WITH A CROSS - FLOW OF AIR

2019 ◽  
Vol 41 (2) ◽  
pp. 11-18
Author(s):  
A. A. Khalatov ◽  
G. V. Kovalenko ◽  
M. A. Muliarchuk
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Hydraulic Resistance ◽  
Vortex Structure ◽  
External Surface ◽  
Cross Flow ◽  
Single Row ◽  
Average Heat ◽  
The Cross ◽  
Spiral Grooves

The results of an experimental study of the average heat transfer, hydraulic resistance and vortex structure at the cross flow of a single-row of round cylinders with spiral grooves on the external surface are presented. The equations of similarity on the average heat transfer and hydraulic resistance were obtained

Heat transfer from a single row of heated cylinders placed in uniform cross flow of air

2016 ◽  
Vol 2016 (0) ◽  
pp. G0600604
Author(s):  
Toshiyuki MISUMI ◽  
Akio SENMYO ◽  
Kenzo KITAMURA ◽  
Akihiko MITSUISHI
Keyword(s):  
Heat Transfer ◽  
Cross Flow ◽  
Single Row
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