Research on Cavitation Flow Characteristics in Thermal Sensitive Future Fuel Nozzles Harbin Engineering University

Format:

Book

Conference/Event

Author/Creator:

Zhang, Hanwen, author.

Contributor:

Fan, Liyun

Li, Bo

Wei, Yunpeng

Zhang, Dianhao

Conference Name:

SAE 2024 Vehicle Powertrain Diversification Technology Forum (2024-12-06 : Xi'An, China)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

In order to clarify the cavitation flow characteristics in future fuel nozzles and guide the design of new nozzle structural blocks, this research work was carried out in both experimental and simulation aspects. In the experiment, it was found that under high injection pressure, methanol showed more severe cavitation than diesel. By adding frosted glass, a better light effect was achieved in the nozzle hole. It was found that the front section of the nozzle had geometric induced cavitation, the middle section had vortex cavitation, and the rear section had expanded vortex cavitation. Traditional numerical models cannot accurately calculate this phenomenon. To this end, the two-phase physical properties that change with temperature and pressure were constructed, combined with multiphase, turbulence, and energy models, CFD calculations were performed and verified based on visualization results. On this basis, a comparative analysis of the flow mechanism in future fuel and traditional diesel fuel nozzles was carried out, and the influence of injection pressure, fuel temperature, and nozzle structure on the flow characteristics in future fuel nozzles was studied. The relevant research conclusions provide theoretical guidance for the design of future fuel systems

Notes:

Vendor supplied data

Publisher Number:

2025-01-7108

Access Restriction:

Restricted for use by site license