Effects of initial temperature and pressure on explosion characteristics of propane–diluent–air mixtures

2021 ◽  
pp. 104585
Author(s):  
Yi Liu ◽  
Yaoguang Zhang ◽  
Dongfeng Zhao ◽  
Mingqi Bai ◽  
Chi-Min Shu
Keyword(s):  
Initial Temperature ◽  
Temperature And Pressure

Laminar burning velocity of microalgae oil/RP-3 premixed flame at elevated initial temperature and pressure

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122081
Author(s):  
Yu Liu ◽  
Wu Gu ◽  
Jinduo Wang ◽  
Hongan Ma ◽  
Nanhang Dong ◽  
...  
Keyword(s):  
Initial Temperature ◽  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity ◽  
Microalgae Oil ◽  
Temperature And Pressure

On the equivalent effect of initial temperature and pressure coupling on the flame speed of methane premixed combustion under dilution

Energy ◽  
2020 ◽  
Vol 207 ◽  
pp. 118269 ◽  
Author(s):  
Zhiqiang Han ◽  
Zhennan Zhu ◽  
Wenbin Yu ◽  
Kun Liang ◽  
Zinong Zuo ◽  
...  
Keyword(s):  
Initial Temperature ◽  
Flame Speed ◽  
Premixed Combustion ◽  
Equivalent Effect ◽  
Temperature And Pressure

scholarly journals Experimental Study and Kinetic Modeling of Laminar Flame Propagation in Premixed Stoichiometric n-butane-air Mixture

2019 ◽  
Vol 70 (4) ◽  
pp. 1125-1131 ◽  
Author(s):  
Venera Giurcan ◽  
Maria Mitu ◽  
Domnina Razus ◽  
Dumitru Oancea
Keyword(s):  
Initial Temperature ◽  
Laminar Flame ◽  
Early Stage ◽  
Kinetic Modelling ◽  
Pressure Rise ◽  
Activation Parameters ◽  
Similar Data ◽  
Spherical Vessel ◽  
Spherical Flames ◽  
Temperature And Pressure

The laminar burning velocities and propagation speeds of stoichiometric n-butane-air mixture were obtained for outwardly propagating spherical flames by measurements of pressure rise during the early stage of propagation in a spherical vessel. The experiments were carried out at various initial pressures within 0.3 and 1.2 bar, and various initial temperatures within 298 and 423 K. The experimental laminar burning velocities were compared with those provided by the detailed kinetic modelling based on Warnatz mechanism for combustion of C1-C4 hydrocarbons, using INSFLA package. The baric and thermal coefficients of laminar burning velocities, calculated from their dependence on initial temperature and pressure, were compared with coefficients characteristic for other fuel-air mixtures. The overall activation parameters (reaction order and activation energy) are reported and discussed in comparison with similar data characteristic for alkane-air flames.

Influence of initial temperature and pressure on the explosion behavior of n-dodecane/air mixtures

2019 ◽  
Vol 62 ◽  
pp. 103920 ◽  
Author(s):  
Francesco Cammarota ◽  
Almerinda Di Benedetto ◽  
Valeria Di Sarli ◽  
Ernesto Salzano
Keyword(s):  
Initial Temperature ◽  
Temperature And Pressure

Bakerian lecture.—The rate of explosion in gases

1893 ◽  
Vol 52 (315-320) ◽  
pp. 451-453
Keyword(s):  
Initial Temperature ◽  
Gaseous Mixtures ◽  
Explosion Wave ◽  
Temperature And Pressure

1. Berthelot’s measurements of the rates of explosion of a number of gaseous mixtures have been confirmed. The rate of the explosion wave for each mixture is constant. It is independent of the diameter of the tube above a certain limit. 2. The rate is not absolutely independent of the initial temperature and pressure of the gases. With rise of temperature the rate falls; with rise of pressure the rate increases; but above a certain crucial pressure variations in pressure appear to have no effect.

Numerical Simulation of Premixed Hydrogen-Air Combustion Behavior in a Closed Vessel

2017 ◽  
Author(s):  
Youyou Xu ◽  
Min Li ◽  
Xiaojian Wen ◽  
Songlin Liu
Keyword(s):  
Numerical Simulation ◽  
Initial Temperature ◽  
Published Data ◽  
Internal Diameter ◽  
Stoichiometric Ratio ◽  
Closed Vessel ◽  
Effect Factors ◽  
Propagation Behavior ◽  
Temperature And Pressure ◽  
Design Pressure

A closed vessel of 1.9 m length and 0.9 m in internal diameter is being designed and will be constructed to experimentally investigate combustion and propagation behavior of the hydrogen-air mixture. Before the experiment is performed, the benchmark and pre-analyses on the hydrogen combustion and propagation behavior in this vessel are carried out by using FLUENT CFD code. The benchmark results indicated that the peak overpressure verse time agrees well with the experimental results of published data. Furthermore, the effect factors such as the hydrogen concentrations, the ignition position, the initial temperature and the pressure were simulated. The results show that the ignition position, initial temperature and pressure have significantly influence on hydrogen behavior. In addition, the overpressure increases with the equivalent ratio and reaches the peak in the vicinity of stoichiometric ratio. However, the overpressure peak is considerably lower than the design pressure of the vessel.

The Study on the Improvement for Mathematical Model and the Affected Actors of Gas Storage Vessel Leakage

2013 ◽  
Vol 753-755 ◽  
pp. 2742-2746
Author(s):  
Kun Pang ◽  
Yao Yong Duan ◽  
Xiu Lin Li
Keyword(s):  
Mathematical Model ◽  
Initial Temperature ◽  
Gas Storage ◽  
Gas Pressure ◽  
Storage Vessel ◽  
Pressure Storage ◽  
Temperature And Pressure ◽  
The Mathematical Model ◽  
Mathematics And Physics

Based on the method of mathematics and physics, the mathematical model of gas storage vessel leakage is improved. The improved mathematical model can better simulate the leakage at anytime, And we gets some results that (1) the function of leakage of quantity, intensity and gas pressure with the variable t, (2) the more correct the mathematical model for the gas storage vessel leakage, and (3) on the analysis of the affected actors of gas storage vessel leakage, the risk order of the factors is the area of the leakage hole, gas initial temperature, and pressure storage vessel.

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