<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">本文是去年本人写的一篇文章,请大家批评指正。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">前言</span></b><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">为了减少由大气污染带来的环境问题,人们正努力降低燃烧装备中一氧化氮(</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">)的排放量。当通过实验对燃烧室性能得到改善时,运用计算机模拟来发展新的燃烧方法常常成本低而有效。在模拟复杂燃烧环境时,模拟者常常要么假设过程可以忽略,要么用一个简单的方程来替代用来描述燃烧过程的一系列复杂方程。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">一氧化氮的形成主要通过三种反应途径</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">[1]</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">:(</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">1</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">)热力</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">途径,(</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">2</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">)</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">N<sub>2</sub>O-</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">媒介途径,(</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">3</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">)快速</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">途径。燃烧过程中对热力</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">形成量的预测已经有推荐方程</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">[2</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">,</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">3]</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">,这也许是由于热力</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">的化学运动特性比较容易理解和相对简单的缘故。这些方程在燃烧室模拟实验中,对主要通过热力</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">途径形成的一氧化氮提供了很好的预测。然而,在低温燃烧情况下,上述方程对一氧化氮的总体预测是很差的</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">, </font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">特别是对快速</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">途径产生一氧化氮的预测,</span><span style="FONT-SIZE: 14pt;"><font face="Times New Roman"><br/> </font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">所以低温燃烧时一氧化氮的其它预测机理显得尤为重要。不幸的是,由于通过快速</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">-NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">和</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">N<sub>2</sub>O-</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">媒介途径形成</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">NO</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">的复杂性,用单一的方程难以对它进行预测。能够精确预测这两种途径形成的一氧化氮且又简便的方程一旦得到,它将对人们致力于降低实际应用中燃烧器一氧化氮的排放量有很大帮助。这样的方程可能取决于反映一氧化氮形成的整体趋势的实验数据。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 23.95pt; mso-char-indent-count: 1.71;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">本论文对燃烧碳氢化合物中一氧化氮浓度变化的整体趋势进行了分析。类似地,这些数据显示:在一氧化氮的相对形成量与平衡率之间可能存在一定的相互发展关系。这些数据是在燃烧</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">C<sub>2</sub>H<sub>6</sub>/O<sub>2</sub>/N<sub>2</sub></font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">、</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman"> C<sub>2</sub>H<sub>4</sub>/ O<sub>2</sub> N<sub>2</sub></font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">和</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">C H<sub>4</sub>/O<sub>2</sub>/ N<sub>2</sub></font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">中,前两种燃烧压力为</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">1~15atm</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">,后者为大气压力下,贫氧和富燃料燃烧、层燃、予混、低温(</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><font face="Times New Roman">1600~1850K</font></span><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman";">)的燃烧状态下测得的。</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><p></p><p></p>
[此贴子已经被作者于2006-11-3 20:53:42编辑过]
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