Publication detail

Effect of pressure on regenerative cooling process of endothermic hydrocarbon fuel at severe pyrolysis conditions

Tian, Ke Yang, Ping Klemes, Jiri Jaromir Ma, Ting Zeng, Min Wang, Qiuwang

Original Title

Effect of pressure on regenerative cooling process of endothermic hydrocarbon fuel at severe pyrolysis conditions

Type

journal article in Web of Science

Language

English

Original Abstract

Regenerative cooling technology with supercritical aviation kerosene as coolant is the optimal thermal management method for advanced aero engines. In order to fill the gap in existing research on the pressure effects at severe pyrolysis, the influence of pressure on the flow field, pyrolysis behaviours, heat transfer, and surface coking are numerically investigated in this study. The results indicate that the velocity-temperature curves at different pressures have two intersections due to the difference in initial pyrolysis temperature, reaction rate, and product distribution. Fuel pyrolysis more easily occurs at high pressure, and elevating pressure improves the fuel heat sink. Besides, a special deterioration of heat transfer is found at high conversion rates because of the combined contribution of weakened primary endothermic reaction and enhanced secondary exothermic reaction. Heat transfer deterioration is delayed at 3.5 MPa due to the high initial pyrolysis temperature and significant flow acceleration. The primary pyrolysis reaction provides more than 80% chemical heat sink and 60% flow acceleration at fully cracked conditions at 5.0 MPa. In addition, inhibiting catalytic coking is the principal method to reduce carbon deposition, and more attention should be paid to carbon deposition under high pressure. The results obtained in this study are expected to provide insights into the selection of operating pressures for advanced aero engines.

Keywords

Advanced aero engines; Hydrocarbon fuel; Pyrolysis; Regenerative cooling; Supercritical pressure; Thermal management

Authors

Tian, Ke; Yang, Ping; Klemes, Jiri Jaromir; Ma, Ting; Zeng, Min; Wang, Qiuwang

Released

1. 7. 2023

Publisher

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER65 RUE CAMILLE DESMOULINS, CS50083, 92442 ISSY-LES-MOULINEAUX, FRANCE

Location

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER65 RUE CAMILLE DESMOULINS, CS50083, 92442 ISSY-LES-MOULINEAUX,

ISBN

1270-9638

Periodical

AEROSPACE SCIENCE AND TECHNOLOGY

Year of study

138

Number

1

State

French Republic

Pages count

13

URL

https://www.sciencedirect.com/science/article/pii/S1270963823002547?via%3Dihub

BibTex

@article{BUT187471,
  author="Tian, Ke and Yang, Ping and Klemes, Jiri Jaromir and Ma, Ting and Zeng, Min and Wang, Qiuwang",
  title="Effect of pressure on regenerative cooling process of endothermic hydrocarbon fuel at severe pyrolysis conditions",
  journal="AEROSPACE SCIENCE AND TECHNOLOGY",
  year="2023",
  volume="138",
  number="1",
  pages="13",
  doi="10.1016/j.ast.2023.108357",
  issn="1270-9638",
  url="https://www.sciencedirect.com/science/article/pii/S1270963823002547?via%3Dihub"
}