Wall effect on determination of laminar burning velocity in a constant volume bomb using a quasi-dimensional model

Aghdam, Ebrahim Abdi

doi:10.1016/j.apm.2014.04.014

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The combustion flame is analyzed from time and space. The performance of diesel that has low nitrogen and is nitrogen free is discussed from the aspects of flame morphology, ignition delay period, combustion duration, and flame intensity [39][40][41]. In addition, this paper studies the effects of the initial temperature of the mixer and the fuel injection pressure on the diesel nitrogen-free combustion performance, which provides an important guide to optimize the technology that produces no NOx of diesel engines.…”

Section: Introductionmentioning

confidence: 99%

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Tan

2021

Atmosphere

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This paper studies the combustion performance of diesel in constant volume combustion vessels under different conditions of mixed low-nitrogen (O2 and N2) or non-nitrogen (O2 and CO2) in varying proportions. The high-speed camera is used to shoot the combustion flame in the constant volume combustion vessel. The process and morphology of the combustion flame are amplified in both time and space to study and analyze the effects of different compositions and concentrations in gases on the combustion performance of diesel and conduct a study on the contributory factors in the performance of diesel with no nitrogen. According to the study, in the condition of low nitrogen, the O2 concentration is more than 60%, the ignition delay period is shortened, the combustion flame is bright and slender, it spreads quickly, and the blue flame appears when the O2 concentration reaches 70%; While for nitrogen-free combustion, only when the O2 concentration reaches 30% is the combustion close to the air condition; when the O2 concentration reaches 40%, the combustion condition is optimized obviously and the combustion flame is relatively slender compared to the air working condition. Similarly, with the increase of the O2 concentration, the ignition delay period of nitrogen-free diesel is shortened, the duration is extended, and the combustion performance is optimized. In addition, when the O2 concentration reaches 50%, with the decrease of the initial temperature, the ignition delay period is prolonged, and the duration is shortened obviously. When the temperature is lower than 700 K, there is no ignition. The increase of the diesel injection pressure is beneficial to optimize the ignition performance of diesel non-nitrogen combustion and shorten its ignition delay period and combustion duration. Related research has important guiding significance to optimize nitrogen-free combustion technology, which produces no NOx of the diesel engine.

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Section: Introductionmentioning

confidence: 99%

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Tan

2021

Atmosphere

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Investigating the laminar burning velocity of 2-methylfuran

Luo

Oppong

Wang

et al. 2018

Fuel

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Auto-ignition characteristics of diesel fuel in an O₂–CO₂ mixture

Liu

Zhao

et al. 2019

Transactions of the Canadian Society for Mechanical Engineering

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To study diesel fuel auto-ignition in an O2–CO2 mixture, a TZ (temperature zone) model is proposed. The effect of O2 and CO2 on reaction rate is considered. The relationship between temperature and ignition delay time is obtained. Different reduced mechanisms based on steady-state assumptions are applied in three temperature zones (T ≤ 800 K, 800 K < T ≤ 1100 K, T > 1100 K). The TZ model is coupled to KIVA-3V code for simulation calculations. To support the simulations, a constant-volume combustion bomb test bench is set up to visualize diesel fuel auto-ignition in air (21%O2–79%N2), a 53%O2–47%CO2 mixture, and a 61%O2–39%CO2 mixture. Ignition delay time and the flame image in these three conditions are compared and analyzed. Then the flame temperature contour and the flame lift-off length in a 53%O2–47%CO2 mixture and a 61%O2–39%CO2 mixture are analyzed. The results show that diesel fuel auto-ignition can be achieved in the tested O2–CO2 mixture. The TZ model can predict the auto-ignition characteristics of diesel fuel in a 53%O2–47%CO2 mixture and a 61%O2–39%CO2, with errors of 12% and 10%, respectively. In these two conditions, the ignition delay time and flame lift-off length are shorter than they are in air.

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Wall effect on determination of laminar burning velocity in a constant volume bomb using a quasi-dimensional model

Cited by 3 publications

References 21 publications

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Investigating the laminar burning velocity of 2-methylfuran

Auto-ignition characteristics of diesel fuel in an O₂–CO₂ mixture

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Wall effect on determination of laminar burning velocity in a constant volume bomb using a quasi-dimensional model

Cited by 3 publications

References 21 publications

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Study on Diesel Low-Nitrogen or Nitrogen-Free Combustion Performance in Constant Volume Combustion Vessels and Contributory

Investigating the laminar burning velocity of 2-methylfuran

Auto-ignition characteristics of diesel fuel in an O2–CO2 mixture

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Product

Resources

About

Auto-ignition characteristics of diesel fuel in an O₂–CO₂ mixture