A Numerical Simulation Study on Improving the Thermal Efficiency of a Spark Ignited Engine --- Part 2: Predicting Instantaneous Combustion Chamber Wall Temperatures, Heat Losses and Knock ---

2014 ◽  
Vol 7 (1) ◽  
pp. 87-95 ◽  
Author(s):  
Akira Kikusato ◽  
Katsuya Terahata ◽  
Kusaka Jin ◽  
Yasuhiro Daisho
Keyword(s):  
Numerical Simulation ◽  
Combustion Chamber ◽  
Simulation Study ◽  
Thermal Efficiency ◽  
Heat Losses ◽  
Chamber Wall ◽  
Engine Part ◽  
Instantaneous Combustion

Analysis of Thermal Efficiency in a Hydrogen Premixed Spark Ignition Engine

1999 ◽  
Author(s):  
Toshio Shudo ◽  
Yasuo Nakajima ◽  
Takayuki Futakuchi
Keyword(s):  
Combustion Chamber ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Combustion Process ◽  
Methane Combustion ◽  
Spark Ignition ◽  
Hydrogen Combustion ◽  
Spark Ignition Engine ◽  
Chamber Wall ◽  
Flame Velocity

Abstract Hydrogen has higher flame velocity and smaller quenching distance than hydrocarbon fuels, and is supposed to have special characteristics in combustion process of internal combustion engines. In this research, contributors to thermal efficiency in a hydrogen premixed spark ignition engine were analyzed and compared with methane combustion. Results showed hydrogen combustion had higher cooling loss to combustion chamber wall, and thermal efficiency of hydrogen combustion was mainly dominated by both cooling loss to combustion chamber wall and degree of constant volume combustion.

Simulation Study on Recycling Resource of Metallic Tailings

2011 ◽  
Vol 268-270 ◽  
pp. 178-183
Author(s):  
Hui Liu ◽  
Wen Zhong Chen
Keyword(s):  
Heat Stress ◽  
Temperature Distribution ◽  
Combustion Chamber ◽  
Simulation Study ◽  
Chamber Wall ◽  
Type Material ◽  
Arts And Crafts ◽  
Smelting Furnace ◽  
Aluminum Smelting ◽  
New Type

This paper studied at recycling and using of metallic tailings on the refractory used in aluminum-smelting furnace. The masonry arts and crafts of combustion chamber wall are introduced. The software FLUENT is used for simulating the temperature distribution of combustion chamber wall, which is used for software ANSYS as the temperature condition to simulation of heat stress of combustion chamber wall in bad operating condition. Contrast the simulating results of new type material with the traditional refractory one, the better performance of the refractory products with new type material is verified. The results can be an academic reference for synthetically application of metallic tailings. The extend application of the technology of metallic tailings on aluminum-smelting furnace will give a great impulse to the energy saving and environmental protection.

NUMERICAL SIMULATION STUDY ON BIONIC MUCUS DRAG REDUCTION OF UNDERWATER VEHICLE

2020 ◽  
Vol 47 (4) ◽  
pp. 371-385
Author(s):  
Kaisheng Zhang ◽  
Chaofan Ma ◽  
Baocheng Zhang ◽  
Bo Zhao ◽  
Qiang Wang
Keyword(s):  
Numerical Simulation ◽  
Drag Reduction ◽  
Simulation Study ◽  
Underwater Vehicle
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