Investigating the coupling effects of momentum wake-buoyancy jets in thermohaline stratification: a simulation study

• Autorzy: Yongcheng Du , Changgeng Shuai , Feiyang Luo , Chengzhe Gao

Identyfikatory

DOI

10.2478/pomr-2024-0059

• Języki publikacji: EN

Abstrakty

EN

This study analyses the impact of varying temperature and salinity stratifications on the thermal characteristics of the wake through a newly established simulation model, the reliability of which is confirmed by experimental validation. In a stratified environment with sTable positive salinity but a temperature changing from positive to negative, the wake has “cold” and “hot” characteristics at the free liquid surface, respectively, and these characteristics are enhanced with an increase in the temperature gradient. In a stratified environment with a sTable positive temperature but changing positive salinity, the wake stream has “cold” characteristics at the free liquid surface, and the feature intensity has a weak positive correlation with the salinity gradient. In general, under the boundary and initial conditions studied in this paper, temperature stratification is the main factor determining the thermal characteristics of the free surface, and salinity stratification is the secondary factor. The influence of the moving induced wake on the thermal characteristics of the wake is stronger than that of the buoyant jet. In a follow-up study, we will focus on a scale analysis of the impact of stratified features on the wake, and scale extrapolation. The influence of the free surface thermal boundary layer on the wake characteristics will be another key point for investigation.

Słowa kluczowe

EN

buoyant jet; wake; temperature stratification; salinity stratification; double stratification; infrared detection

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2024
• Tom: nr 4
• Strony: 153--160
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Yongcheng Du

• Institute of Noise & vibration, Naval University of Engineering, Wuhan, China
• National Key Laboratory on Ship Vibration & Noise, Wuhan , China

• https://orcid.org/0000-0002-5290-3258

autor

Changgeng Shuai

• Institute of Noise & vibration, Naval University of Engineering, Wuhan, China

autor

Feiyang Luo

• Institute of Noise & vibration, Naval University of Engineering, Wuhan, China

autor

Chengzhe Gao

• Institute of Noise & vibration, Naval University of Engineering, Wuhan, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).