Combustion simulation and key parameter optimization for opposite axial piston engine in small-scale

2015 ◽  
Vol 22 (9) ◽  
pp. 3397-3408 ◽  
Author(s):  
Lei Zhang ◽  
Hai-jun Xu ◽  
Cun-yun Pan ◽  
Xiao-jun Xu
Keyword(s):  
Parameter Optimization ◽  
Small Scale ◽  
Piston Engine ◽  
Combustion Simulation ◽  
Axial Piston ◽  
Key Parameter

Combustion Simulation of Opposite Axial Piston Engine in Small Scale

2017 ◽  
Author(s):  
Lei Zhang ◽  
Hai-jun Xu ◽  
Cun-yun Pan ◽  
Fa-liang Zhou ◽  
Zhong-bao Qin
Keyword(s):  
Small Scale ◽  
Piston Engine ◽  
Combustion Simulation ◽  
Axial Piston

scholarly journals Preliminary explorations of the performance of a novel small scale opposed rotary piston engine

Energy ◽  
2020 ◽  
Vol 190 ◽  
pp. 116402 ◽  
Author(s):  
Jianbing Gao ◽  
Guohong Tian ◽  
Phil Jenner ◽  
Max Burgess ◽  
Simon Emhardt
Keyword(s):  
Small Scale ◽  
Piston Engine

scholarly journals Effects of five different parameters on biodiesel HCCI combustion in free-piston engine generator

2021 ◽  
Vol 25 (6 Part A) ◽  
pp. 4197-4207
Author(s):  
Chunhui Liu ◽  
Shaojie Wu ◽  
Shuo Pang
Keyword(s):  
Initial Pressure ◽  
Piston Engine ◽  
Detailed Chemical Kinetics ◽  
Free Piston ◽  
Hcci Combustion ◽  
Free Piston Engine ◽  
Combustion Simulation ◽  
Working Frequency ◽  
Skeletal Mechanism ◽  
Detailed Chemical

A coupled 3-D CFD and detailed chemical kinetics model of free-piston engine generator (FPEG) was adopted to investigate the effects of initial parameters on homogeneous charge compression ignition (HCCI) combustion and emission. Biodiesel with 115 species skeletal mechanism was selected as fuel. Five different parameters, namely the initial pressure, the initial temperature, the working frequency, the compression ratio and the fuel equivalence ratio, were selected to analyze their influences in the HCCI combustion simulation of FPEG. The simulation results showed that the change of the five parameters had visible impact on the heat release rate of HCCI combustion, which caused the in-cylinder temperature and pressure to change, and also caused the emission content of NOx and SOOT to change obviously.

scholarly journals Influence and evaluation of constraint on fracture toughness in pipeline research

2012 ◽  
Vol 3 (1) ◽  
pp. 25-35
Author(s):  
Matthias Verstraete ◽  
Stijn Hertelé ◽  
Wim De Waele ◽  
Rudi Denys
Keyword(s):  
Fracture Toughness ◽  
Full Scale ◽  
Small Scale ◽  
Width Ratio ◽  
Defect Tolerance ◽  
Edge Notch ◽  
Scale Test ◽  
Scale Structures ◽  
Tearing Resistance ◽  
Key Parameter

Accessing nowadays fossil fuel reserves requires a strain-based design approach. Within suchdesign, the ductile tearing resistance is a key parameter in assessing the defect tolerance. To determinethis tearing resistance, full scale (pressurized) tests can be performed. However, such approach would becostly and time consuming. Consequently, effort is made to select appropriate small scale test specimens.Most research has focused so far on the single edge notch bend (SENB) and tensile (SENT) specimen. Toevaluate the suitability of these test specimens, the crack tip stress fields can be examined or theresistance curves compared with full scale structures. This paper aims at comparing the trends observedusing these techniques. Furthermore, the suitability of the small scale test specimens is evaluated. It isconcluded that sufficiently long (length-to-width ratio equal to ten) clamped SENT specimens have thepotential to predict the tearing resistance of full scale pipes. In addition, the internal pressure does notsignificantly affect the fracture toughness. These conclusions are stated by both experimental results andfinite element simulations.

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