当前位置: X-MOL 学术Comput. Chem. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
In situ adaptive tabulation (ISAT) for combustion chemistry in a network of perfectly stirred reactors (PSRs) for the investigation of soot formation and growth
Computers & Chemical Engineering ( IF 4.3 ) Pub Date : 2018-03-20 , DOI: 10.1016/j.compchemeng.2018.03.007
Sudip Adhikari , Alan Sayre , Abhilash J. Chandy

This paper presents an efficient computational implementation of the in situ adaptive tabulation (ISAT) approach (Pope, 1997) for combustion chemistry in a network of perfectly stirred reactors (PSRs) for the investigation of soot formation and growth. This study, for the first time, extends the thermochemical composition vector to contain the soot moments, using the method of moments with interpolative closure (MOMIC) as a soot model with six concentration moments. A series of PSR calculations is carried out using the direct integration (DI) and ISAT approaches. Assessment of the accuracy of ISAT approach is conducted through direct comparisons with DI calculations. Moreover, complimentary cumulative distribution function (CCDF), sensitivity of ISAT calculations with respect to the absolute error tolerance values and speedup are analyzed for two different test cases of ethylene–air using two different chemical kinetic mechanisms. A maximum speedup of 50 × was achieved for an error tolerance of 104.



中文翻译:

原位自适应制表法(ISAT),用于在完全搅拌反应器(PSR)网络中燃烧化学,用于研究烟尘的形成和生长

本文介绍了一种在烟气形成和生长研究的完全搅拌反应器(PSR)网络中用于燃烧化学的原位自适应制表法(ISAT)方法(Pope,1997)的有效计算实现。这项研究首次使用具有内插闭合矩的方法(MOMIC)作为具有六个浓度矩的烟灰模型,将热化学成分矢量扩展到包含烟灰矩。使用直接积分(DI)和ISAT方法进行了一系列PSR计算。通过直接比较与DI计算来评估ISAT方法的准确性。此外,互补累积分布函数(CCDF)针对两种不同的乙烯-空气测试案例,使用两种不同的化学动力学机制,对ISAT计算相对于绝对误差容限值和加速的敏感性进行了分析。达到最大50倍的加速,误差容限为10-4

更新日期:2018-03-20
down
wechat
bug