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Method for constructing gasoline alternative fuel model and simplifying mechanism

A technology that replaces fuels and simplifies the mechanism, and is applied in the fields of combustion dynamics and gasoline alternative fuels

Active Publication Date: 2020-10-30
JIANGSU UNIV
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Problems solved by technology

However, in the prior art, there is a lack of a relatively simplified reaction mechanism and model that can accurately describe the combustion characteristics of "butanol gasoline"

Method used

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  • Method for constructing gasoline alternative fuel model and simplifying mechanism
  • Method for constructing gasoline alternative fuel model and simplifying mechanism
  • Method for constructing gasoline alternative fuel model and simplifying mechanism

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Embodiment

[0040] Example: by Figure 1 to Figure 4 As shown, a method for constructing a gasoline alternative fuel model and a simplified mechanism includes the following steps:

[0041] S1. Determining the key components and adaptation mechanism of oil substitute fuel: select the n-butanol fuel mechanism as an example for detailed description. The present invention chooses the detailed mechanism of butanol isomers proposed by Sarathy provided by LLNL laboratory. The mechanism includes 426 components and 2334 reactions. In order to obtain the required n-butanol mechanism, first remove the components and reactions related to the three isomers of sec-butanol, isobutanol and tert-butanol in the detailed mechanism. , Get the detailed mechanism of the required n-butanol: 340 components, 1345 reactions;

[0042] S2. Adopt the direct relationship diagram method DRG, the direct relationship diagram method based on error propagation DRGEP, the whole material sensitivity analysis method FSSA, and the...

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Abstract

The invention discloses a method for constructing a gasoline alternative fuel model and simplifying a mechanism. The method comprises the following steps: determining key components and an adaptationmechanism of a gasoline alternative fuel; systematically simplifying the framework of the single fuel mechanism from the perspective of framework simplification by adopting a directed relation graph (DRG) method, a directed relation graph (DRGEP) method based on error propagation, and a directed relation graph (DRGEPSA) method based on a full substance sensitivity analysis (FSSA) method and coupling error transfer and sensitivity analysis; coupling single fuel mechanisms obtained after respective simplification to obtain a constructed alternative fuel simplification mechanism; and selectingthermodynamic parameters, and comparing and verifying a constructed simplified mechanism model by utilizing comparison of experiments and numerical simulation. The method greatly reduces the sizeof the detailed mechanism, and can achieve efficient and accurate calculation.

Description

Technical field [0001] The invention relates to the field of combustion dynamics and the field of gasoline alternative fuels, and in particular to a method for constructing a gasoline alternative fuel model and mechanism simplification. Background technique [0002] With the rapid economic growth, the number of automobiles has increased year by year, and the consumption of oil has also increased sharply. In addition, the environmental pollution caused by the rapid increase of internal combustion engines should not be underestimated. Facing the increasingly severe energy crisis and environmental problems, it is extremely urgent to actively seek and develop alternative fuels to achieve efficient and clean combustion of internal combustion engines. [0003] On the other hand, with the development of computer technology, numerical simulation calculation has become one of the mainstream methods for studying fuel combustion and emissions. Using numerical simulation to analyze the combus...

Claims

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Application Information

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IPC IPC(8): C10L1/02G16C10/00
CPCC10L1/02G16C10/00
Inventor 魏胜利陈洁于志清丁统元杨帆吴成成
Owner JIANGSU UNIV
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