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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018025102
pages 1667-1688

INFLUENCE OF VARIABLE AIR DISTRIBUTION ON POLLUTANT EMISSIONS IN A MODEL WALL JET CAN COMBUSTOR

Farzad Bazdidi-Tehrani
School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
Mohammad Sadegh Abedinejad
School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
Hosein Yazdani-Ahmadabadi
School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran

Краткое описание

In the present article, the influence of variation of percentage of distributed air flow rate by a swirler, as well as primary and dilution jets on reactive flow characteristics in a model, wall jet can combustor is investigated. The realizable k-ε turbulence model, discrete ordinates radiation model and laminar flamelet combustion model are employed to simulate a reactive two-phase flow. Four different cases of air injection are studied. Results show that an increase in air percentage of primary jets makes a stronger recirculated flow to take place toward the center of a combustion chamber, before primary jets. Also, a maximum difference in the temperature profiles for all four cases of air distribution occurs near the injector. In addition, air distribution of case 1 based on laboratory conditions, is not optimal and there are minimum CO2 and maximum C concentrations. In case 3, where the highest percentage of air flow belongs to primary jets, less NO emission is produced and distribution of the outlet temperature is more uniform. Furthermore, combustion process is more complete as compared with cases 1 and 4.


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