Studies on the flame structure and drag of a combusting droplet group

• Autorzy: Zhou Lixing , Li Ke , Sun Ting

Identyfikatory

DOI

10.19206/CE-160506

• Języki publikacji: EN

Abstrakty

EN

Droplet combustion has been studied by experiments and numerical simulation for many years, and most of studies were done about single droplets. As for droplet groups, some theoretical and experimental studies were reported, but less of numerical studies. One of the important characteristics is the drag of combusting droplets, which is closely related to flame structure，and is a sub-model in numerical simulation of spray combustion. There are contradictory research results for the drag of combusting droplets. In the present paper, large-eddy simulation (LES) is used to study the flame structure and drag of a combusting ethanol-droplet group. The results show that there are three combustion modes: fully-enveloped flame, partially-enveloped flame and wake flame in a droplet group, leading to the change of the drag with inlet velocities. It is found that the drag of droplets in the group is much smaller than that of a non-combusting particle in isothermal flows.

Słowa kluczowe

EN

droplet-group combustion; large-eddy simulation; flame structure; drag force

PL

spalanie kropelkowe; modelowanie wielkowirowe; struktura płomienia; siła oporu

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2023
• Tom: R. 62, nr 2
• Strony: 3--8
• Opis fizyczny: Bibliogr. 28 poz., il. kolor., rys., wykr.

Twórcy

autor

Zhou Lixing

• Engineering Mechanics, Tsinghua University, China

• https://orcid.org/0000-0002-1443-3099

autor

Li Ke

• School of Energy and Environmental Engineering, Inner Mongolia University of Science and Technology, China

autor

Sun Ting

• Engineering Mechanics, Tsinghua University, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).