Analytical model for heat transfer in a discrete parallel fracture‐rock matrix system

Ground Water ◽  
2022 ◽  
Author(s):  
Renjie Zhou ◽  
Quanrong Wang
Keyword(s):  
Heat Transfer ◽  
Analytical Model ◽  
Matrix System ◽  
Rock Matrix ◽  
Fracture Rock

On the role of rock matrix to heat transfer in a fracture-rock matrix system

2022 ◽  
Vol 245 ◽  
pp. 103950
Author(s):  
Renjie Zhou ◽  
Hongbin Zhan ◽  
Yinuo Wang
Keyword(s):  
Heat Transfer ◽  
Matrix System ◽  
Rock Matrix ◽  
Fracture Rock

The Effect of Gravity on Heat Transfer by Rayleigh Streaming in Pulse Tubes and Thermal Buffer Tubes

2004 ◽  
Author(s):  
Konstantin I. Matveev ◽  
Scott Backhaus ◽  
Gregory W. Swift
Keyword(s):  
Heat Transfer ◽  
Analytical Model ◽  
Thermal Energy ◽  
Heat Exchangers ◽  
Acoustic Energy ◽  
Heat Leak ◽  
Thermoacoustic Engines ◽  
Different Temperatures ◽  
Rayleigh Streaming ◽  
Streaming Flow

Thermoacoustic engines and refrigerators use the interaction between heat and sound to produce acoustic energy or to transport thermal energy. Heat leaks in thermal buffer tubes and pulse tubes, components in thermoacoustic devices that separate heat exchangers at different temperatures, reduce the efficiency of these systems. At high acoustic amplitudes, Rayleigh mass streaming can become the dominat means for undesirable heat leak. Gravity affects the streaming flow patterns and influences streaming-induced heat convection. A simplified analytical model is constructed that shows gravity can reduce the streaming heat leak dramatically.

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