Research on the Laminar Burning Velocity and Surrogate Models of Gasoline

doi:10.7652/xjtuxb201903006

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Research on the Laminar Burning Velocity and Surrogate Models of Gasoline

更新时间：2025-07-09

- Research on the Laminar Burning Velocity and Surrogate Models of Gasoline
- Vol. 53, Issue 3, Pages: 36-42(2019)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201903006
  CLC： TK407.9
- Online First：10 March 2019，
  
  Published：2019
- 稿件说明：
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Research on the Laminar Burning Velocity and Surrogate Models of Gasoline[J]. 2019, 53(3): 36-42.
DOI：

Research on the Laminar Burning Velocity and Surrogate Models of Gasoline[J]. 2019, 53(3): 36-42. DOI： 10.7652/xjtuxb201903006.

摘要

针对实际汽油组分复杂导致数值模拟研究困难的问题

采用球形火焰法

在定容燃烧弹上测量了初始温度分别为358、403、448 K

初始压力分别为0.1、0.2、0.5 MPa

当量比为0.8～1.5工况下

实际汽油、正庚烷、异辛烷、甲苯、异辛烷/正庚烷混合燃料(PRF)、甲苯/异辛烷/正庚烷混合燃料(TRF)的层流燃烧速度

分析了初始温度、压力以及当量比对汽油的层流燃烧速度的影响规律

对比了不同替代物模型对实际汽油的层流燃烧速度的预测结果。基于实验结果

构建了适合我国汽油的双组分和三组分汽油替代物模型

对比结果表明

在本研究的实验工况范围内

三组分汽油替代物模型比双组分汽油替代物模型能够更好预测实际汽油层流燃烧速度。应用Chemkin软件和KAUST清洁燃烧研究中心近期发展的汽油替代物机理

对本研究实验数据进行了数值仿真

该机理对实验数据给出了合理预测。利用本研究提出的汽油替代物模型

可对实际汽油的层流燃烧速度进行合理的预测。

Abstract

The spherical flame method was adopted for the problem that numerical simulation research is somewhat difficult due to the complexity of the actual gasoline composition. Laminar burning velocities of actual gasoline were measured in a constant volume bomb. Measurements were also conducted for n-heptane

iso-octane

primary reference fuels(n-heptane and iso-octane blends)

and toluene reference fuel(n-heptane

iso-octane and toluene blends). Experiments were performed at the equivalence ratios from 0.8 to 1.5

initial temperatures of 358

403 and 448 K and pressures of 0.1

0.2 and 0.5 MPa

respectively. The effects of initial temperature

pressure and equivalence ratio on laminar burning velocity were analyzed. Based on the experimental results

primary reference fuel surrogate model(PRF)and toluene reference fuel surrogate model(TRF)were proposed. The results showed that the TRF model could better predict the laminar burning velocity of actual gasoline than the PRF model. Besides

using the software CHEMKIN and the KAUST Clean Combustion Research Center's recently developed gasoline surrogate

numerical simulation of the measured data was carried out

which gives a reasonable prediction of the measured data under the research conditions. Therefore

a reasonable numerical simulation study on actual gasoline could be carried out by using the gasoline surrogate model proposed in this study.

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Keywords

references

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