Effect of the Reynolds and Richardson numbers on thermal mixing characteristics

2021 ◽  
Vol 169 ◽  
pp. 120917
Author(s):  
Cenk Evrim ◽  
Eckart Laurien
Keyword(s):  
Thermal Mixing ◽  
Mixing Characteristics

Experimental observations of thermal mixing characteristics in T-junction piping

2014 ◽  
Vol 276 ◽  
pp. 107-114 ◽  
Author(s):  
Mei-Shiue Chen ◽  
Huai-En Hsieh ◽  
Yuh-Ming Ferng ◽  
Bau-Shi Pei
Keyword(s):  
Thermal Mixing ◽  
Mixing Characteristics

Simulation Analysis of Thermal Mixing Characteristics of Fluids Flowing Through a Converging T-junction

CFD letters ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 28-41
Author(s):  
Md Nuruzzaman ◽  
William Pao ◽  
Hamdan Ya ◽  
Md Ragibul Islam ◽  
Mohammad Ayub Adar ◽  
...  
Keyword(s):  
Temperature Difference ◽  
Temperature Fluctuation ◽  
Simulation Analysis ◽  
Working Fluid ◽  
Inlet Temperature ◽  
Fluid Temperature ◽  
Thermal Mixing ◽  
Main Pipe ◽  
Mixing Characteristics ◽  
Weld Area

Temperature fluctuation occurs while mixing of hot and cold fluids in a T-junction due to incomplete thermal mixing. This temperature fluctuation can produce thermal fatigue at the weld area of the T-junction. The present study aims to numerically investigate the thermal mixing characteristics of hot and cold fluids in a T-junction. The realizable k-ε turbulence model is used with natural gas as the working fluid. Temperature distribution, mixing quality, and intensity of temperature fluctuation are evaluated and compared along with the mixing outlet. The inlet temperature difference and branch to main pipe flowrate ratio have a direct influence on thermal mixing. The higher temperature difference can reduce the thermal mixing performance. Thermal mixing increases with the increase of branch to main pipe flowrate. The intensity of temperature fluctuation is found within a short distance from the intersecting point of the two inlets. With the increase of distance along with the mixing outlet, the frequency of temperature fluctuation decreases, and thermal mixing increases.

scholarly journals Effect of Curvature Ratio on Thermal Mixing Characteristics in a T-Junction Area Which Has a 90-Degree Bend in the Upstream Area

2004 ◽  
Vol 70 (700) ◽  
pp. 3142-3149 ◽  
Author(s):  
Kazuhisa YUKI ◽  
Yu TAJIMA ◽  
Saburo TODA ◽  
Hidetoshi HASHIZUME ◽  
Toshiharu MURAMATSU
Keyword(s):  
Curvature Ratio ◽  
Junction Area ◽  
Thermal Mixing ◽  
Mixing Characteristics
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