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Xuanye Liang, Lijun Yang, Gaofeng Wang and Jingxuan Li
The bifurcation process of self-sustained combustion instability pressure perturbations in a liquid rocket combustor is investigated based on the Helmholtz equations and a pressure dependent flame describing function. The modal frequency and growth rates...
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Kai Deng, Mingxiao Wang, Zhongliang Shen, Yanjun Hu and Yingjie Zhong
The results of the research can be used in the design of low NOx pulsating burners to determine the corresponding frequency and amplitude.
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Xiang Li, Qingchun Lei, Xiaocun Zhao, Wei Fan, Shuang Chen, Li Chen, Ye Tian and Quan Zhou
The combustion characteristics of a hydrogen-fueled supersonic combustor featuring a large cavity length-to-depth ratio (i.e., 11) were examined by performing experimental trials while varying the fuel injector positions and equivalence ratios. During th...
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Zhilei Yu and Xin Huang
Wind-blown pool fire accidents in a ventilated tunnel usually pose and present serious risks to properties and personal safety. In this paper, the flame characteristics and flow field changes of pool fires under the combined influence of baffles and cros...
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Mahmoud Abdel-Sattar, Adel M. Al-Saif, Abdulwahed M. Aboukarima, Dalia H. Eshra and Lidia Sas-Paszt
Flame Seedless grape is considered one of the most popular and favorite grapes for consumers, since it ripens early, and has good cluster quality. Flame seedless grape marketing value depends upon its desirable appearance, berry, cluster size, and shape....
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Mao Li, Yiheng Tong, Marcus Thern and Jens Klingmann
Steam-diluted combustion in gas turbine systems is an effective approach to control pollutant emissions and improve the gas turbine efficiency. The primary purpose of the present research is to analyze the influence of steam dilution on the combustion st...
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Kazuhiro Yamamoto and Masahiro Takemoto
In this study, to reduce the amount of pollutant PAH and soot in the flame, we examined the burner system equipped with a center air injection. For this purpose, by using PAH-LIF and soot LII, we evaluated relative PAH and soot amounts in both the triple...
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Chong Yan, Yibing Xu, Ruizhe Cao and Ying Piao
The very large eddy simulation (VLES) method was investigated for supersonic reacting flows in the present work. The advantages and characteristics of the VLES model and the widely used improved delayed detached eddy simulation (IDDES) method were reveal...
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Heena Saheewala, Suman Sanadhya, Sudhir Kumar Upadhyay, Santosh Ranjan Mohanty and Devendra Jain
Potassium (K) helps crop plants to resist biotic and abiotic challenges and plays a vital role in biochemical, metabolic, and physiological processes. Due to intense agricultural practices over the past few decades, the soil K reserve has been observed t...
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Linda Makovická Osvaldová, Iveta Marková, Miroslava Vandlícková, Stanislava Ga?percová and Michal Titko
The article deals with selected upholstery flammability test materials that, in the case of fire, can cause fire spread. For the research, frequently used materials for upholstery based on polyester were utilized: imitation leather, suede, and microplush...
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Kostyantyn Korytchenko,Pavel Krivosheyev,Dmytro Dubinin,Andrii Lisniak,Kostiantyn Afanasenko,Serhii Harbuz,Olga Buskin,Andriy Nikorchuk,Ivan Tsebriuk
Pág. 26 - 31
The paper reports a study into the initiation of detonation in pulse detonation engines. The chosen direction to resolve this issue is the use of detonation tubes with multifocal ignition. We applied two spark discharges as a source of ignition, which ig...
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Jana Barabás, Vojislav Jovicic and Antonio Delgado
This work deals with the numerical investigation of a three-dimensional, laminar hydrogen-air diffusion flame in which a cylindrical fuel jet is surrounded by in-flowing air. To calculate the distribution of gas molecules, the model solves the species co...
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Soung Woo Park, Jeong Hwan Kim and Jung Kwan Seo
Hydrogen is widely regarded as a key element of prospective energy solutions for alleviating environmental emission problems. However, hydrogen is classified as a high-risk gas because of its wide explosive range, high overpressure, low ignition energy, ...
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Sara Bonuso, Pasquale Di Gloria, Guido Marseglia, Ramón A. Otón Martínez, Ghazanfar Mehdi, Zubair Ali Shah, Antonio Ficarella and Maria Grazia De Giorgi
This study introduces an innovative approach involving the injection of hydrogen into a low-swirl, non-premixed flame, which operates with gaseous fuels derived from an air-blast atomizer designed for aero-engine applications. The aim is to characterize ...
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Chengfei Tao, Rongyue Sun, Yichen Wang, Yang Gao, Lin Meng, Liangbao Jiao, Shaohua Liang and Ling Chen
This study experimentally explored the effects of equivalence ratio settings on ethanol fuel combustion oscillations with a laboratory-scale combustor. A contrary flame equivalence ratio adjusting trend was selected to investigate the dynamic characteris...
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Aleksandr A. Firsov
This paper presents the results of testing and optimization of a plasma-assisted combustion scheme based on a pylon for fuel injection equipped with a plasma actuator. Electrodes were installed behind the stern of the pylon for the creation of Q-DC disch...
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Md. Amzad Hossain, Md Nawshad Arslan Islam, Martin De La Torre, Arturo Acosta Zamora and Ahsan Choudhuri
This paper presents the flow and flame characteristics of a highly turbulent reactive flow over a backward-facing step inside a windowed combustor. Flow and combustion experiments were performed at Re = 15,000 and Re = 30,000 using high-resolution 10 kHz...
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Palaiologos Palaiologou, Kostas Kalabokidis, Michelle A. Day, Alan A. Ager, Spyros Galatsidas and Lampros Papalampros
Predicting where the next large-scale wildfire event will occur can help fire management agencies better prepare for taking preventive actions and improving suppression efficiency. Wildfire simulations can be useful in estimating the spread and behavior ...
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Georgios Maragkos and Tarek Beji
Progress in fire safety science strongly relies on the use of Computational Fluid Dynamics (CFD) to simulate a wide range of scenarios, involving complex geometries, multiple length/time scales and multi-physics (e.g., turbulence, combustion, heat transf...
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Viktor Volkov,Natalia Makoyed,Yuliia Loboda,Oksana Sokolova
Pág. 54 - 65
Theoretically, the combustion stability of solid fuel, which during the combustion process is decomposed according to the ?solid phase ? liquid phase ? gas? scheme, is investigated. The physical and mathematical models for t...
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