首页|Transient and Steady Spray Characteristics of Soybean Oil/2,5-Dimethylfuran Blended Fuel in an Underwater Stirling Engine

Transient and Steady Spray Characteristics of Soybean Oil/2,5-Dimethylfuran Blended Fuel in an Underwater Stirling Engine

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The reduction of oxygen consumption is a key factor to improve the energy density of underwater Stirling engine.A series of fundamental experiments are carried out to elucidate the spray characteristics of soybean oil/2,5-dimethylfuran(DMF)blended fuel in an underwater Stirling engine.Spray characteristics such as spray penetration,spray angle,spray area,and light intensity level under low injection and ambient pressures are obtained using image post-processing method.The results show that the effects of injection pressure,ambient pressure,and nozzle diameter on the transient spray characteristics of underwater Stirling engine are similar to those of diesel engine.However,in the steady spray process,the injection pressure has little effect on spray near angle,and the spray far angle increases with the increase of the injection pressure.Compared with the spray far angle at injection pressure of 3 MPa,the spray far angle at 5 MPa and 7 MPa increased by 11.38％and 18.14％respectively.The addition of DMF can obviously improve the atomization of soybean oil/DMF blended fuel.The spray angle of blended fuel in transient process increases with the increase of the DMF concentration.The spray near angle has exceeded that of diesel(46.21°)when the DMF volume fraction exceeds 25％.The spray far angle is equivalent to that of diesel when the DMF volume fraction reaches 75％.Moreover,the spray with gas ejection no longer keeps conical,the droplet diameter distribution is more dispersed,and the droplet diameter is smaller.

spray anglesteady spraysoybean oil2,5-dimethylfuran(DMF)Stirling engine

王继刚、乔信起、周枫、王林涛

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School of Mechanical Engineering,Yangzhou University,Yangzhou 225127,Jiangsu,China

Key Laboratory of Power Machinery and Engineering of Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China

School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China

Zhejiang Marine Development Research Institute,Zhoushan 316021,Zhejiang,China

Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China

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江苏省自然科学基金Initial Scientific Research Fund of Yangzhou UniversityPublic Welfare Technology Research Program of Zhejiang ProvincePublic Welfare Technology Research Program of Zhejiang Province

BK20220588137012553LGG19E060001LGG21E090001

2024

10.1007/s12204-023-2630-y

上海交通大学学报(英文版)
上海交通大学

上海交通大学学报(英文版)

影响因子：0.151
ISSN：1007-1172
年,卷(期)：2024.29(2)
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