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首頁> 外文學(xué)位 >Measurement apparatus and modelling of laminar burning speed and mass burning rate of syngas and onset of auto-ignition of n-heptane and gas to liquid fuel.
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Measurement apparatus and modelling of laminar burning speed and mass burning rate of syngas and onset of auto-ignition of n-heptane and gas to liquid fuel.

機譯：層流燃燒速度和合成氣質(zhì)量燃燒速率以及正庚烷和氣體自燃成液體燃料的開始的測量裝置和建模。

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摘要

Research studies into understanding the fundamental thermodynamic properties of Syngas are extremely relevant in engineering combustion modeling for stationary turbine based power plants and for IC engines. The models rely heavily on accurate experimental results and of critical importance is the data for: chemical kinetic rates, mass burning rate and auto-ignition conditions. To produce some of this necessary data, an experimental facility capable of measuring the pressure rise from spherically expanding flames was developed. The first core component of the facility includes a spherical combustion vessel that enables the measurement of the pressure rise from a combustion process, at high initial temperature and pressure. The second core component of the facility, which includes a lower pressure cylindrical combustion vessel, with optically clear sides, enables the direct measurement of laminar flame speed as well as the visualization of expanding spherical flames for the study of flame structures. An improved model to complement the experimental measurements has been developed. Using the thermodynamic model, the mass burning rate and laminar burning speed can be calculated from the pressure data measured using one of the two constant volume combustion vessels. The model is used to calculate the mass fraction of the burned gas by simultaneously solving the conservation of mass and energy equations coupled with equilibrium concentrations calculation of the combustion products using STANJAN. For smooth non-cellular flames laminar burning speed can be also calculated. The facility and model have been used and improved by many of the researchers at Northeastern University with results published in a variety of technical journals, and thus expanding the measured range of laminar flame speed. This thesis will describe in detail the experimental apparatus and report the laminar burning speed and mass burning rate for Syngas-Air and Syngas-O2-He at high temperature and pressure as well as auto-ignition characteristics of n-Heptane and GTL (S8), which is a synthetic surrogate for aviation fuel.
機譯：理解合成氣的基本熱力學(xué)性質(zhì)的研究與固定渦輪機發(fā)電廠和IC發(fā)動機的工程燃燒建模極為相關(guān)。該模型嚴重依賴于準確的實驗結(jié)果，而至關(guān)重要的數(shù)據(jù)是：化學(xué)動力學(xué)速率，質(zhì)量燃燒速率和自燃條件。為了產(chǎn)生一些必要的數(shù)據(jù)，開發(fā)了一種能夠測量球形膨脹火焰引起的壓力升高的實驗設(shè)備。設(shè)備的第一核心組件包括球形燃燒容器，該容器能夠在較高的初始溫度和壓力下測量燃燒過程中的壓力升高。該設(shè)備的第二個核心組件包括一個低壓圓柱狀燃燒容器，其側(cè)面具有光學(xué)透明的表面，可以直接測量層流火焰速度以及可視化膨脹球形火焰，以研究火焰結(jié)構(gòu)。已經(jīng)開發(fā)出一種改進的模型來補充實驗測量結(jié)果。使用熱力學(xué)模型，可以根據(jù)使用兩個恒定體積燃燒容器之一測得的壓力數(shù)據(jù)來計算質(zhì)量燃燒速率和層流燃燒速度。通過同時求解質(zhì)量和能量方程的守恒以及使用STANJAN計算燃燒產(chǎn)物的平衡濃度，該模型用于計算燃燒氣體的質(zhì)量分數(shù)。對于光滑的非細胞火焰，還可以計算層流燃燒速度。東北大學(xué)的許多研究人員已經(jīng)使用和改進了該設(shè)施和模型，其結(jié)果發(fā)表在各種技術(shù)期刊上，從而擴大了層流火焰速度的測量范圍。本論文將詳細描述實驗設(shè)備，并報告高溫高壓下合成氣-空氣和合成氣-O2-He的層流燃燒速度和質(zhì)量燃燒速率，以及正庚烷和GTL（S8）的自燃特性。 ，它是航空燃料的合成替代品。

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  • 作者

    Elia, Mimmo.;

  • 作者單位

    Northeastern University.;

  • 授予單位 Northeastern University.;
  • 學(xué)科 Mechanical engineering.
  • 學(xué)位 Ph.D.
  • 年度 2016
  • 頁碼 91 p.
  • 總頁數(shù) 91
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類
  • 關(guān)鍵詞

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