WEI Xiaoyang, WANG Limin, DENG Lei, et al. Influence of entrance effect of CC plate channel on thermal and hydraulic characteristic[J]. CIESC Journal, 2017, (11): 4061-4068.
WEI Xiaoyang, WANG Limin, DENG Lei, et al. Influence of entrance effect of CC plate channel on thermal and hydraulic characteristic[J]. CIESC Journal, 2017, (11): 4061-4068.DOI: 10.11949/j.issn.0438-1157.20170090.
The influence of entrance effect on thermal and hydraulic characteristics for CC plate channel was numerically studied by adopting the lower Reynolds k-ε turbulence flow model. The simulation results indicated that the entrance effect significantly enhanced turbulent intensity at the first three unitary cells and the influence of entrance effect on heat transfer could be neglected after the fourth unitary cell. Because the increase of turbulent intensity in the inlets reduces with increasing Reynolds number
the heat transfer enhancement could be depressed. As the Reynolds number increases
the friction coefficients of entrance and fully developed section both decrease. In addition
the friction coefficient of inlet section is approximately 20% higher than that of fully developed section.