Development and scale effects of small Swiss-roll combustors
Development and scale effects of small Swiss-roll combustors
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DOI：
10.1016/j.proci.2006.08.077
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发表时间：
2007-01-01
影响因子：
3.4
通讯作者：
Maruta, Kaoru
中科院分区：
文献类型：
--
作者：
Kim, Nam Il;Alzumi, Satoshi;Maruta, Kaoru
瑞士辊结构被认为是发展亚毫米级燃烧室的一种很有前途的结构。在这项研究中，缩放效应进行了研究实验和分析。基于我们的第一个原型（直径64 mm），按比例缩小的燃烧室（45 mm）与不同的设计参数，燃烧室的直径，顶板厚度，通道尺寸和燃烧室材料。建立了一个简单的一维分析模型来解释瑞士滚燃烧室的燃烧特性。采用两步全局反应模型，沿着求解燃烧室本体和混合气的能量方程和组分方程。尽管本模型简单，但对燃烧室的重要特性，如燃烧上限和下限，帽厚度对燃烧极限的影响等都进行了较好的预测。根据分析结果，另外开发了几种较小的硬币大小的燃烧室（直径26和20 mm），并对其特性进行了研究。研究表明，设计参数的影响在小型燃烧室的实际开发中是重要的。(c)2006年，在燃烧研究所。爱思唯尔公司出版All rights reserved.
The configuration of Swiss-roll was adopted as a promising structure for the development of sub-millimetre scale combustors. In this study, the scaling effects are investigated both experimentally and analytically. Based on our first proto-type (64 mm in diameter), scaled-down combustors (45 mm) with different design parameters were fabricated; diameter of the combustor, top plate thickness, channel size and combustor material. A simple one-dimensional analytical model was constructed to interpret the combustion characteristics of the Swiss-roll combustors. Two energy equations for combustor body and mixture, along with species equations employing two-step global reaction model were solved. In spite of the simplicity of the present model, important characteristics of the combustors such as upper and lower flammability limits, effect of cap thickness on flammability limits were predicted well. Based on the analytical results, several smaller coin-size combustors (diameter 26 and 20 mm) were additionally developed and their characteristics were investigated. This study shows that the effects of design parameters are important in the practical development of smaller combustors. (c) 2006 The Combution Institute. Published by Elsevier Inc. All rights reserved.