Assessment on heat transfer deterioration to supercritical carbon dioxide in upward flows via large eddy simulation

Xie, Jingzhe; Xie, Gongnan

doi:10.1016/j.ijheatfluidflow.2022.108954

Cited by 16 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wang [ 208 ] (2021) emphasized that his research was the first effort to study the heat transfer of supercritical water with LES methodology, using the opensource CFD code OpenFOAM rather than commercial software. Xie et al [ 231 ] (2022) reproduced a series of DNS results through the large eddy simulation method, emphasizing that the LES results had a good consistency with DNS data, and the heat transfer deterioration and recovery process could be well captured. In the study of upward flow in a micropipe with a diameter of 2 mm, they found that the mean velocity profile is distorted into an M-shaped distribution, corresponding to the regeneration of turbulent kinetic energy and Reynolds stress.…”

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

“… Turbulent streaks along the tube at different non-dimensional wall distances, from top to bottom

[ 231 ]. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

“… Instantaneous vortex structures by Q-criterion and colored by streamwise velocity [ 231 ]. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%

See 3 more Smart Citations

A Review of the Complex Flow and Heat Transfer Characteristics in Microchannels

Zhang

Zou

2023

Micromachines

View full text Add to dashboard Cite

Continuously improving heat transfer efficiency is one of the important goals in the field of energy. Compact heat exchangers characterized by microscale flow and heat transfer have successfully provided solutions for this purpose. However, as the characteristic scale of the channels decreases, the flow and heat transfer characteristics may differ from those at the conventional scale. When considering the influence of scale effects and changes in special fluid properties, the flow and heat transfer process becomes more complex. The conclusions of the relevant studies have not been unified, and there are even disagreements on some aspects. Therefore, further research is needed to obtain a sufficient understanding of flow structure and heat transfer mechanisms in microchannels. This article systematically reviews the research about microscale flow and heat transfer, focusing on the flow and heat transfer mechanisms in microchannels, which is elaborated in the following two perspectives: one is the microscale single-phase flow and heat transfer that only considers the influence of scale effects, the other is the special heat transfer phenomena brought about by the coupling of microscale flow with special fluids (fluid with phase change (pseudophase change)). The microscale flow and heat transfer mechanisms under the influence of multiple factors, including scale effects (such as rarefaction, surface roughness, axial heat conduction, and compressibility) and special fluids, are investigated, which can meet the specific needs for the design of various microscale heat exchangers.

show abstract

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

“… Turbulent streaks along the tube at different non-dimensional wall distances, from top to bottom

[ 231 ]. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%