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Cavitation Flow of DDCL-PODE Mixed Fuel in a Nozzle
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Xinchen LIN1, 2, Zhao LYU1, Zhen LIU3, Ying LIU3, Guodong ZHANG3, Xinqi QIAO1, *
Ship Engineering | 2026, 48(3) : 81 - 91
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Ship Engineering | 2026, 48(3): 81-91
• Ship Power, Propulsion Equipment and Auxiliary Equipment •
Cavitation Flow of DDCL-PODE Mixed Fuel in a Nozzle
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Xinchen LIN1, 2, Zhao LYU1, Zhen LIU3, Ying LIU3, Guodong ZHANG3, Xinqi QIAO1, *
Affiliations
  • 1.School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2.Shanghai Marine Equipment Research Institute, Shanghai 200031, China
  • 3.Kangyue Technology (Shandong) Co., Ltd., Weifang 262711, Shandong, China
Published: 2026-03-25 doi: 10.13788/j.cnki.cbgc.2026.03.09
Outline
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[Purpose]

In order to study the potential application of the diesel fuel direct coal liquefaction diesel (DDCL) and polyoxymethylene dimethyl ethers (PODE) mixed fuel in marine diesel engines,

[Method]

the volume of fluid (VOF) method is adopted to simulate and study the influence of different fuels, nozzle hole conical and the angle between the nozzle hole and the needle valve axis on the cavitation flow in the nozzle.

[Result]

The results show that the cavitation intensity in the nozzle hole with a larger angle between the needle valve axis is greater, while there is no obvious cavitation in the nozzle hole with an angle less than 60°. The gradually converging nozzle hole can effectively suppress cavitation and has good flowability and low turbulence intensity. With the increase of PODE content, the density of the mixed fuel increases, the cavitation, turbulence intensity and flow loss in the nozzle hole decrease, and the effective flow area increases. The mass flow rate of DDCL is lower than that of petrochemical diesel. After blending the same volume of PODE, the mass flow rate of the former increases by 6.2% and is higher than that of petrochemical diesel.

[Conclusion]

The blended fuel of PODE-coal direct liquefaction diesel can reduce the internal flow loss of nozzle orifices, improve the flow performance of the orifices, and increase the mass flow rate.

diesel from direct coal liquefaction (DDCL)  /  polyoxymethylene dimethyl ethers (PODE)  /  nozzle  /  cavitation
Xinchen LIN, Zhao LYU, Zhen LIU, Ying LIU, Guodong ZHANG, Xinqi QIAO. Cavitation Flow of DDCL-PODE Mixed Fuel in a Nozzle[J]. Ship Engineering, 2026 , 48 (3) : 81 -91 . DOI: 10.13788/j.cnki.cbgc.2026.03.09
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Year 2026 volume 48 Issue 3
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Article Info
doi: 10.13788/j.cnki.cbgc.2026.03.09
  • Receive Date：2025-03-28
  • Online Date：2026-04-24
  • Published：2026-03-25
Article Data
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History
  • Received：2025-03-28
  • Revised：2025-08-05
Funding
Affiliations
    1.School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2.Shanghai Marine Equipment Research Institute, Shanghai 200031, China
    3.Kangyue Technology (Shandong) Co., Ltd., Weifang 262711, Shandong, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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