scholarly journals ANALYTICAL STUDY OF HEAT TRANSFER TO LIQUID METALS IN CROSS FLOW THROUGH ROD BUNDLES. PART II

1963 ◽  
Author(s):  
C. Hsu
Keyword(s):  
Heat Transfer ◽  
Analytical Study ◽  
Liquid Metals ◽  
Cross Flow ◽  
Rod Bundles ◽  
Flow Through

Analytical study of heat transfer for liquid metals in a turbulent tube flow

2021 ◽  
Vol 373 ◽  
pp. 111030
Author(s):  
Yaou Shen ◽  
Shinian Peng ◽  
Mingyu Yan ◽  
Yu Zhang ◽  
Jian Deng ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Analytical Study ◽  
Liquid Metals ◽  
Tube Flow ◽  
Turbulent Tube Flow

An Analytical Study of the Optimized Performance of an Impingement Heat Sink

2004 ◽  
Vol 126 (4) ◽  
pp. 528-534 ◽  
Author(s):  
S. B. Sathe ◽  
B. G. Sammakia
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Sink ◽  
High Performance ◽  
Cross Flow ◽  
High Heat ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
High Heat Transfer ◽  
Flow Through

The results of a study of a new and unique high-performance air-cooled impingement heat sink are presented. An extensive numerical investigation of the heat sink performance is conducted and is verified by experimental data. The study is relevant to cooling of high-power chips and modules in air-cooled environments and applies to workstations or mainframes. In the study, a rectangular jet impinges on a set of parallel fins and then turns into cross flow. The effects of the fin thickness, gap nozzle width and fin shape on the heat transfer and pressure drop are investigated. It is found that pressure drop is reduced by cutting the fins in the central impingement zone without sacrificing the heat transfer due to a reduction in the extent of the stagnant zone. A combination of fin thicknesses of the order of 0.5 mm and channel gaps of 0.8 mm with appropriate central cutout yielded heat transfer coefficients over 1500 W/m2 K at a pressure drop of less than 100 N/m2, as is typically available in high-end workstations. A detailed study of flow-through heat sinks subject to the same constraints as the impingement heat sink showed that the flow-through heat sink could not achieve the high heat transfer coefficients at a low pressure drop.

Validation of TRACE in the Field of Liquid Metal Heat Transfer

2014 ◽  
Author(s):  
Wadim Jaeger ◽  
Wolfgang Hering ◽  
Nerea Diez de los Rios ◽  
Antonio Gonzalez
Keyword(s):  
Heat Transfer ◽  
Liquid Metal ◽  
Data Base ◽  
Forced Convection ◽  
Liquid Metals ◽  
Metal Flow ◽  
Lead Alloy ◽  
Ongoing Task ◽  
Rod Bundles ◽  
Liquid Metal Flow

The validation of system codes like TRACE is an ongoing task especially in areas with limited or almost no application like liquid metal flow. Therefore, extensive validation efforts are necessary to increase the confidence in the code predictions. TRACE has been successfully validated and applied to lead-alloy cooled systems. The results gained with lead-alloy coolants could be extrapolated to other liquid metals with the necessary care. Nevertheless, dedicated investigations with the different liquid metals are mandatory to confirm the extrapolations. In the present case, the validation work focuses on liquid metal heat transfer in pipes and rod bundles under forced convection. To take advantage of a greater data base, several liquid metals have been implemented into the code. In addition, new coolants allow supporting analysis of liquid metals loops which are in the design or construction stage. Concerning the validation, several experiments have been found, conducted by other investigators, which are modeled with the modified TRACE version. The results indicate that the chosen heat transfer models for pipe and bundle flow are applicable. In case of deviations, physical sound reasons can be provided to explain them.

Experimental And Analytical Study Of Heat Transfer And Fluid Flow Through Aluminum Foams

2010 ◽  
Author(s):  
Simone Mancin ◽  
Claudio Zilio ◽  
Luisa Rossetto ◽  
Alberto Cavallini ◽  
Kambiz Vafai
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Analytical Study ◽  
Aluminum Foams ◽  
Flow Through
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