Numerical study of mixing and diffusion combustion of gaseous fuels in channels

1988 ◽  
Vol 24 (2) ◽  
pp. 132-138
Author(s):  
S. A. Zaitsev ◽  
A. B. Lebedev
Keyword(s):  
Numerical Study ◽  
Diffusion Combustion ◽  
Gaseous Fuels ◽  
And Diffusion

NUMERICAL STUDY OF DIFFUSION COMBUSTION OF PULVERIZED COAL IN A GAS JET

2021 ◽  
Vol 62 (3) ◽  
pp. 484-489
Author(s):  
E. B. Butakov ◽  
V. A. Kuznetsov ◽  
A. V. Minakov ◽  
A. A. Dekterev ◽  
S. V. Alekseenko
Keyword(s):  
Numerical Study ◽  
Pulverized Coal ◽  
Gas Jet ◽  
Diffusion Combustion

The Study on PCCI Mode of Diesel Engine Fueled with Methanol/Dimethyl Ether

2014 ◽  
Vol 607 ◽  
pp. 629-632
Author(s):  
Yan Yan ◽  
Yu Sheng Zhang
Keyword(s):  
Dimethyl Ether ◽  
Alternative Fuels ◽  
Volume Fraction ◽  
Good Alternative ◽  
Diffusion Combustion ◽  
Compression Ignition ◽  
Temperature Reaction ◽  
High Temperature Reaction ◽  
Three Stages ◽  
And Diffusion

Taking into account China's abundant coal resources, methanol and DME(Dimethyl Ether) obtained from coal are good alternative fuels. The research project is to utilize the fuel of DME and methanol in diesel engines for new combustion models PCCI (Premixed Charge Compression Ignition).The tests of the PCCI mode with different boundary conditions were studied on PCCI test bench. PCCI combustion is consisted of three stages: low temperature reaction of DME, high-temperature reaction of DME and diffusion combustion reaction of methanol. DME as combustion improver should be kept relatively low concentration, and with the decrease of methanol, its concentration need to be reduced. Methanol and formaldehyde are important parts of HC emission, their volume fraction was about 70%.

Regimes of Unstable Expansion and Diffusion Combustion of a Hydrocarbon Fuel Jet

2018 ◽  
Vol 54 (3) ◽  
pp. 255-263 ◽  
Author(s):  
V. V. Lemanov ◽  
V. V. Lukashov ◽  
R. Kh. Abdrakhmanov ◽  
V. A. Arbuzov ◽  
Yu. N. Dubnishchev ◽  
...  
Keyword(s):  
Hydrocarbon Fuel ◽  
Diffusion Combustion ◽  
Fuel Jet ◽  
And Diffusion

Numerical Analysis of Heated Soil Vapor Extraction System

2002 ◽  
Author(s):  
R. S. Jadhav ◽  
R. S. Amano ◽  
J. Jatkar ◽  
R. J. Lind
Keyword(s):  
High Temperature ◽  
Organic Compounds ◽  
Environmental Science ◽  
Numerical Study ◽  
Soil Vapor Extraction ◽  
Vapor Extraction ◽  
Element Analysis ◽  
Volatile Organic ◽  
Heated Soil ◽  
And Diffusion

An innovative and highly effective technique for remediation of soil has been developed—Heated Soil Vapor Extraction (HSVE), which is one of essential technologies that quickly and effectively remediates soil that is contaminated with organic compounds. The system efficiently uses the principles of heat transfer and diffusion to eliminate organic compounds from the soil. It basically consists of a high temperature heat source and a sink to take away the vaporized compounds in the presence of high temperature in the soil. A numerical study has been conducted to further strengthen the fact that the system is very effective, by actually modeling soil with system. Finite Element Analysis software ANSYS® has been used for the purpose of analysis. Such analysis will help environmental science and give new dimensions to soil remediation processes to clean soil off volatile organic compounds so that they can be carried out quickly, efficiently and economically.

scholarly journals Simulating of the admixture spreading in a steady 2D lengthy stream of the viscous fluid

2013 ◽  
Vol 2 (1) ◽  
pp. 91-97
Keyword(s):  
Viscous Fluid ◽  
Small Parameter ◽  
Stokes Equations ◽  
Numerical Study ◽  
Computer Experiments ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Convection Diffusion ◽  
Proposed Model ◽  
And Diffusion

The problem of the passive contaminant spreading in a steady viscous fluid stream is discussed while the admixture's dissipation and diffusion are taken into account. The channel is assumed to be a horizontal plane, curvilinear and quite lengthy, so that the ratio of the stream width to its length can be regarded as a small parameter. A mathematical model of the process derived by the small parameter technique from the 2D steady Navier-Stokes equations for incompressible viscous fluid and non-steady convection-diffusion equation of a substance in the moving medium is introduced. A finite element method is applied for numerical study of the proposed model and results of computer experiments are presented.

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