Influence of particle size and shape on turbulent heat transfer characteristics and pressure losses in water-based nanofluids

2013 ◽  
Vol 61 ◽  
pp. 439-448 ◽  
Author(s):  
Arttu Meriläinen ◽  
Ari Seppälä ◽  
Kari Saari ◽  
Jani Seitsonen ◽  
Janne Ruokolainen ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Particle Size ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Pressure Losses ◽  
Size And Shape ◽  
Transfer Characteristics ◽  
Water Based ◽  
Particle Size And Shape

Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow

1995 ◽  
Vol 16 (5) ◽  
pp. 398-404 ◽  
Author(s):  
S. Obi ◽  
K.P. Kobayashi ◽  
A.M. Bethancourt ◽  
H. Yoshida ◽  
T. Asano ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Channel Flow ◽  
Computational Study ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Turbulent heat transfer characteristics of water flow in a rotating pipe

2013 ◽  
Vol 49 (4) ◽  
pp. 469-484 ◽  
Author(s):  
M. Bousbai ◽  
M. Ould-Rouiss ◽  
A. Mazouz ◽  
A. Mataoui
Keyword(s):  
Heat Transfer ◽  
Water Flow ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Numerical Simulations on Turbulent Heat Transfer Characteristics of Supercritical Pressure Fluids

2009 ◽  
Author(s):  
Toru Nakatsuka ◽  
Kazuyuki Takase ◽  
Hiroyuki Yoshida ◽  
Takeharu Misawa
Keyword(s):  
Heat Transfer ◽  
Prediction Accuracy ◽  
Experimental Studies ◽  
Supercritical Pressure ◽  
Turbulent Heat Transfer ◽  
High Heat Flux ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Annular Channels

As one of next generation nuclear reactors, development of a supercritical pressure water reactor (SCWR) has been performed. In order to design the SCWR, it is necessary to investigate thermal-hydraulic characteristics in the SCWR core precisely. As for those characteristics, many experimental studies have been conducted from the former in each country using circular tubes, annular channels, and the simulated fuel bundles. An objective of this study is to clarify the prediction accuracy of the turbulent heat transfer characteristics in the supercritical pressure fluids for the SCWR design. From the experimental results of the supercritical pressure fluids flowing upward in a vertical circular tube, it was confirmed that the turbulent heat transfer coefficient suddenly decreases under the high heat flux condition. Although many numerical studies have been done in order to confirm the deterioration of turbulent heat transfer in supercritical pressure fluids, it is important to choose a suitable turbulence model to obtain high prediction accuracy. Then, the present study was performed to investigate numerically the effect of turbulent models on the deteriorated turbulent heat transfer.

scholarly journals Theoretical Investigation on the Fully Developed Turbulent Heat Transfer Characteristics of Liquid Sodium

2020 ◽  
Vol 8 ◽  
Author(s):  
Rui Zhang ◽  
Zhenying Wang ◽  
Zhenhong Wang ◽  
Tingting Ren ◽  
Jiangwu Shi
Keyword(s):  
Heat Transfer ◽  
Theoretical Investigation ◽  
Turbulent Heat Transfer ◽  
Liquid Sodium ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Simulation of turbulent heat transfer characteristics in a corrugated tube with five-channel twisted tape inserts

2017 ◽  
Author(s):  
Pitak Promthaisong ◽  
Withada Jedsadaratanachai ◽  
Varesa Chuwattanakul ◽  
Smith Eiamsa-ard
Keyword(s):  
Heat Transfer ◽  
Turbulent Heat Transfer ◽  
Twisted Tape ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics ◽  
Corrugated Tube

Local Heat Transfer in a Rotating Two-Pass Triangular Duct With Smooth Walls

1994 ◽  
Author(s):  
Sandip Dutta ◽  
Je-Chin Han ◽  
Yuming Zhang ◽  
C. Pang Lee
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Cross Section ◽  
Rotation Number ◽  
Secondary Flows ◽  
Rate Of Change ◽  
Turbulent Heat Transfer ◽  
Turbulent Heat ◽  
Heat Transfer Characteristics ◽  
Transfer Characteristics

Earlier heat transfer studies with orthogonal rotation were conducted mostly on ducts of square cross-section. This paper reports a different cross-section, a triangular duct. Unlike a square cross-section, the triangular shape provides more restriction to the formation of the secondary flows. Moreover, the studied orientation of the right triangular duct avoids formation of symmetric vortex structures in the cross flow plane. This paper presents turbulent heat transfer characteristics of a two-pass smooth walled triangular duct. One pass is for radial outward flow and the other for radial inward flow. With rotation the radial outward and inward flow directions show different surface heat transfer characteristics. Like a square duct, differences between the trailing and the leading Nusselt number ratios for the triangular duct increase with rotation number. However, the rate of change of Nusselt number ratios with rotation number varies for the two duct geometries. Standard k-ε model predictions for a radial outward flow situation show that the Nusselt number ratio variations with Reynolds number are not drastic for the same rotation number.

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