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Research Papers: Jets, Wakes, and Impingment Cooling

Numerical Study of Impingement Cooling of Aviation Kerosene at Supercritical Conditions

[+] Author and Article Information
Yunfei Xing

State Key Laboratory of
High Temperature Gas Dynamics,
Institute of Mechanics,
Chinese Academy of Sciences,
Beijing 100190, China

Fengquan Zhong

State Key Laboratory of
High Temperature Gas Dynamics,
Institute of Mechanics,
Chinese Academy of Sciences,
Beijing 100190, China;
School of Engineering Science,
University of Chinese Academy of Sciences,
Beijing 100049, China
e-mail: fzhong@imech.ac.cn

Xinyu Zhang

State Key Laboratory of
High Temperature Gas Dynamics,
Institute of Mechanics,
Chinese Academy of Sciences,
Beijing 100190, China;
School of Engineering Science,
University of Chinese Academy of Sciences,
Beijing 100049, China

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received January 10, 2018; final manuscript received June 4, 2018; published online July 23, 2018. Assoc. Editor: Amy Fleischer.

J. Heat Transfer 140(11), 112201 (Jul 23, 2018) (7 pages) Paper No: HT-18-1020; doi: 10.1115/1.4040612 History: Received January 10, 2018; Revised June 04, 2018

In the present paper, numerical study of flow and heat transfer properties of RP-3 kerosene at liquid and supercritical conditions in an impingement model is conducted with renormalization group (RNG) kε turbulence model and a ten-species surrogate of kerosene. The independence of grids is first studied, and the numerical results are compared with experimental data for validation. Characteristics of flow and heat transfer of kerosene flow in the impingement model are studied with different inlet mass flow rates and different inlet temperatures. The velocity and temperature field show similar profile compared to that of air impingement. The heat transfer rates increase first with the increasing of inlet temperature and then decrease suddenly when the inlet temperature is 500 K.

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References

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Figures

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Fig. 1

The sketch up of the impingement model

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Fig. 2

The configuration of impinging wall

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Fig. 3

Numerical grid used in the computational fluid dynamics analysis

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Fig. 4

Comparison of the local Nusselt number distributions with the experimental data [22]

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Fig. 5

Comparison with Florschuetz's [25] correlation in different jet rows

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Fig. 6

The magnitude of velocity distribution at the center cross section in the impingement model

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Fig. 7

Jet massflow distribution

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Fig. 8

Crossflow development evaluated with the model of Florschuetz et al. [25]

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Fig. 9

Distribution of streamlines at each jet location

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Fig. 10

Temperature fields on each jet cross section along the flow direction

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Fig. 11

Heat transfer coefficients distribution on the target wall

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Fig. 12

Distribution of heat transfer coefficient along different x-lines on the target wall

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Fig. 13

The area averaged heat transfer coefficients of each jets

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Fig. 14

Heat transfer distributions on the target wall with different mass flow rates

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Fig. 15

Distributions of Heat transfer ratio along line C with different inlet mass flow rates

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Fig. 16

The heat transfer distributions on the target wall for different inlet temperatures

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Fig. 17

The local temperature distribution on the target plate with different inlet temperatures

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Fig. 18

The total averaged heat transfer coefficients on the target plate for different inlet temperatures

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