fluent平板表面汽油及柴油的燃烧特性仿真

Title    The simulation of gasoline and diesel combustion  Characteristic on flat
Abstract
The combustion characteristics of gasoline and diesel on the flat were studied by the method of numerical simulation. The temperature field and velocity field of the two common fuels in steady combustion were simulated by fluent software under different wind speed. From the result of simulation, we found that the highest temperature of combustion is concerned with nature of the fuel under the condition of no wind, but has nothing to do with the size of the oil pan. Under windy conditions, because of the reinforce of heat transfer，the highest temperature of combustion in burning area decreases with the increase of the wind speed. The maximum velocity and the maximum turbulent kinetic energy in computational decrease with the increase of wind speed, but the rate of decrease became more and more slowly. When the wind speed exceeds a certain limit value, the combustion will be shut down. 源`自*六)维[论*文'网www.lwfree.cn
Keywords  numerical simulation  combustion characteristic  temperature field   velocity field

1  绪论    1
1.1  应用背景    1
1.2  相关研究现状    1
1.3  研究问题及手段    2
1.4  Fluent概述    3
2  平板表面液态燃料燃烧模型    4
2.1   物理模型    4
2.2   数学模型    6
2.2.1   湍流模型的定义    6
2.2.2   辐射模型的定义    6
2.2.3   燃烧模型的定义    7
2.2.4   离散相模型的定义    8
2.2.5   射流源的定义    10
2.2.6   燃料物性的定义    11
3  柴油燃烧数值仿真    12
3.1   无风条件下的自由燃烧    12
3.1.1   边界条件的定义    12
3.1.2   求解器的设置    12
3.2   风速为0.5m/s时的燃烧特性    16
3.3   风速为1m/s时的燃烧特性    17
3.4   风速为2m/s时的燃烧特性    19
4  汽油燃烧数值仿真    21

1  风速的影响    24
2  油盘尺寸的影响    24
3  燃料的影响    24

1  绪论
1.1  应用背景

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