THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

Authors of this Paper

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Miao Gong

,

Huaijin Yan

,

Hongyi Song

online first only

Study on thermal-flow field characteristics in multi-angle deicing jet using phase-field and k-ω turbulence models

ABSTRACT
A multi-angle jet model for aircraft deicing under engine-idle conditions was established based on the k-ω turbulence model and introduces the phase-field method to more accurately capture gas-liquid interface behavior. The model's simulation effectiveness was verified through experiments, and the influence of different jet inclination angles (30°, 45°, 60°) on the wall flow field structure, pressure distribution, and heat transfer performance was systematically analyzed based on the simulation results. The research findings indicate that under the condition of a nozzle Reynolds number of 3.2×10⁵, the jet with a 30° inclination angle achieves the optimal comprehensive heat transfer effect on the wall. Its spanwise diffusion range increases by approximately 36 nozzle diameters compared to the 60° case, and the position of the upstream high-temperature core region shifts from x/d = -2.5 to x/d = -13.5. Furthermore, the 30° jet also demonstrates better performance in terms of impact pressure and turbulence intensity. This study provides a theoretical basis for optimizing spray parameters in the engine-idle deicing process and has practical significance for improving deicing efficiency and reducing deicing fluid consumption.
KEYWORDS
inclined jets, heat transfer analysis, Idle deicing, multiphase flow, deicing parameters
PAPER SUBMITTED: 2025-07-25
PAPER REVISED: 2025-10-02
PAPER ACCEPTED: 2025-10-13
PUBLISHED ONLINE: 2025-11-08
DOI REFERENCE: https://doi.org/10.2298/TSCI250725195G
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Study on thermal-flow field characteristics in multi-angle deicing jet using phase-field and k-ω turbulence models