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The Behavior of Turbulent Heat Transfer Deterioration in Supercritical Hydrocarbon Fuel Flow Considering Thermal Resistance Distribution

Sun, Feng ; Li, Yong ; Sunden, Bengt LU and Xie, Gongnan LU (2019) In International Journal of Thermal Sciences 141. p.19-32
Abstract

To highlight the thermal management of the cooling system in an advanced engine, the flow and heat transfer characteristics of turbulent hydrocarbon fuel flow in a rectangular channel are numerically explored in detail. The severe condition of deteriorated behavior is investigated in the heat transfer process. Considering buoyancy force effects, a three-dimensional numerical model is established and a validated SST k-ω turbulence model is adopted at real working conditions. It is found that there is a strong thermal stratification phenomenon near the heated wall, which sufficiently proves that the splitting up of flow field needs to be considered. The fluctuating characteristics and a relative stable state of flow and heat transfer is... (More)

To highlight the thermal management of the cooling system in an advanced engine, the flow and heat transfer characteristics of turbulent hydrocarbon fuel flow in a rectangular channel are numerically explored in detail. The severe condition of deteriorated behavior is investigated in the heat transfer process. Considering buoyancy force effects, a three-dimensional numerical model is established and a validated SST k-ω turbulence model is adopted at real working conditions. It is found that there is a strong thermal stratification phenomenon near the heated wall, which sufficiently proves that the splitting up of flow field needs to be considered. The fluctuating characteristics and a relative stable state of flow and heat transfer is performed in the deteriorated and recovery region, respectively. In addition, taking the viscous sublayer and core turbulent field into consideration, a new deteriorated prediction based on the thermal resistance mechanism is proposed and it performed well to evaluate the onset of the deteriorated environment. Under certain conditions, the local deteriorated behavior is strongly related to the form of thermal resistance.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Heat transfer deterioration, Supercritical hydrocarbon fuel, Thermal resistance, Thermo-physical properties, Turbulent flow
in
International Journal of Thermal Sciences
volume
141
pages
14 pages
publisher
Elsevier
external identifiers
  • scopus:85063545872
ISSN
1290-0729
DOI
10.1016/j.ijthermalsci.2019.03.027
language
English
LU publication?
yes
id
c7df4332-696b-4432-8c22-73afaebaac39
date added to LUP
2019-04-05 10:46:44
date last changed
2020-10-08 11:11:36
@article{c7df4332-696b-4432-8c22-73afaebaac39,
  abstract     = {<p>To highlight the thermal management of the cooling system in an advanced engine, the flow and heat transfer characteristics of turbulent hydrocarbon fuel flow in a rectangular channel are numerically explored in detail. The severe condition of deteriorated behavior is investigated in the heat transfer process. Considering buoyancy force effects, a three-dimensional numerical model is established and a validated SST k-ω turbulence model is adopted at real working conditions. It is found that there is a strong thermal stratification phenomenon near the heated wall, which sufficiently proves that the splitting up of flow field needs to be considered. The fluctuating characteristics and a relative stable state of flow and heat transfer is performed in the deteriorated and recovery region, respectively. In addition, taking the viscous sublayer and core turbulent field into consideration, a new deteriorated prediction based on the thermal resistance mechanism is proposed and it performed well to evaluate the onset of the deteriorated environment. Under certain conditions, the local deteriorated behavior is strongly related to the form of thermal resistance.</p>},
  author       = {Sun, Feng and Li, Yong and Sunden, Bengt and Xie, Gongnan},
  issn         = {1290-0729},
  language     = {eng},
  pages        = {19--32},
  publisher    = {Elsevier},
  series       = {International Journal of Thermal Sciences},
  title        = {The Behavior of Turbulent Heat Transfer Deterioration in Supercritical Hydrocarbon Fuel Flow Considering Thermal Resistance Distribution},
  url          = {http://dx.doi.org/10.1016/j.ijthermalsci.2019.03.027},
  doi          = {10.1016/j.ijthermalsci.2019.03.027},
  volume       = {141},
  year         = {2019},
}