TY  - JOUR
ID  - scholars14369
KW  - Efficiency; Mixing; Thermal fatigue; Turbulence models
KW  -  Cold fluid; Flow configurations; Fluid-flow; Hot fluids; Mixing efficiency; Mixing performance; Mixing tee; T junctions; Temperature fluctuation; Thermal mixing
KW  -  Temperature distribution
N2  - When hot and cold fluids flow through a converging T-junction, rapid temperature fluctuations occur in the mixing region due to the thermal mixing of fluids. This temperature fluctuation causes thermal fatigue, which is responsible for the shortening of service life in a T-junction. Hence, the design of T-junction for thermal mixing requires not only superior mixing performance but minimize thermal fluctuation during mixing is also desirable. The objective of the present paper is to determine the thermal mixing performance at the mixing region of T-junction with two different flow configurations. Water, at different inlet temperatures, is used as a working medium and is assumed incompressible. Two types of flow configurations, namely intersecting and colliding regular T-junction with a sidearm pointing at 12 oâ??clock position have been evaluated in this paper. Realizable k-epsilon turbulence model was assumed, and its validity benchmarked against RANS and RSM-EB turbulence models. The thermal mixing efficiency of both flow configurations is calculated and compared. The results show that the thermal mixing efficiency of both intersecting and colliding mixing tee increases with the increase of distance and time. Intersecting tee shows higher temperature fluctuation than colliding tee at the mixing outlet, but colliding tee shows higher thermal mixing efficiency than intersecting mixing tee © 2021 International Information and Engineering Technology Association. All rights reserved.
IS  - 5
VL  - 39
JF  - International Journal of Heat and Technology
A1  - Nuruzzaman, M.
A1  - Pao, W.
A1  - Ejaz, F.
A1  - Ya, H.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121288986&doi=10.18280%2fijht.390522&partnerID=40&md5=ea92234fea88cffe063cf3e5c2384b18
Y1  - 2021///
SP  - 1590
TI  - A preliminary numerical nnvestigation of thermal mixing efficiency in t-junctions with different flow configurations
N1  - cited By 3
AV  - none
EP  - 1600
PB  - International Information and Engineering Technology Association
SN  - 03928764
ER  -