Journal
APPLIED THERMAL ENGINEERING
Volume 65, Issue 1-2, Pages 597-604Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2013.12.066
Keywords
Porous medium engine; Combustion; Heat transfer; Emissions reduction; Numerical simulation
Funding
- National Science Foundation of China (NSFC) [51176021]
- UK Royal Academy Engineering Research Exchange with China Scheme, China Postdoctoral Science Foundation [2012M510437]
- Center for Combustion Energy of Tsinghua University
- EPSRC [EP/J016381/2, EP/J016381/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J016381/2, EP/J016381/1] Funding Source: researchfish
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Based on superadiabatic combustion in porous medium (PM), the porous medium engine as a new combustion concept is proposed to achieve high combustion efficiency and low emissions. In this paper, an axisymmetric model with detailed chemistry and two-temperature treatment is implemented into a variant of the KIVA-3V code to simulate the working process of the PM engine. Comparisons with the same engine but without PM are conducted. Temperature evolution of the PM and its effects are discussed in detail. Key factors affecting heat transfer, combustion and emissions of the PM engine, such as porosity, the initial PM temperature and equivalence ratio, are analyzed. The results show that the characteristics of heat transfer, emissions and combustion of the PM engine are superior to the engine without PM, providing valuable support for the PM engine concept. In particular, the PM engine is shown to sustain ultra lean combustion. (C) 2014 Elsevier Ltd. All rights reserved.
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