Prediction of a high swirled natural gas diffusion flame using a PDF model

“…For example, we could get rid of the circles or spheres with their radius "r" proportional to the measured concentration if we take into consideration the different models of gas dynamics [19,21,22]. By using these models, we can change the opacity levels of the circles and the spheres; alternatively, by using various approximation and interpolation techniques, we can create even more realistic "clouds".…”

Section: Displaying the Obtained Datamentioning

confidence: 99%

A Multi-rotor System for the Collection and Analysis of Measurements to Evaluate and Spatially Demonstrate the Pollutants in the Air

Molnár

2015

Int. j. adv. robot. syst.

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One of the most outstanding problems of our technical age is the heavy aerial pollution. There are several well-known methods [6,[10][11][12][13][14][15] that exist for large-area pollution detection, but the measurement of the exact rate of pollution in smaller areas (e.g., industrial zones or disasteraffected areas of a few square kilometres), as well as the numerical expression of changes therein, remain an unsolved problem.The main feature of the developed device is that it can provide exact measurements for a small area at low altitudes (under 500m AGL (Above Ground Level)), and it is also capable of periodical measurements between 0.0001-10 Hz. With the data analysis provided by the system, we can obtain immediate information about the pollution of the given area, as well as changes in pollution levels over time.

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“…Those works were made to investigate or predict flame properties and combustion flow fields [11], pollutant emissions [12e19] and the mechanism of flame stability [13]. Combustion modeling has been performed using several turbulence models, the standard keε [11,14e22], Reynolds Stress Model [11,12,16,22] and Realizable keε [14,21]. With respect to combustion models for non-premixed combustion for conventional flames, the most used are the Probability Density Function/Laminar Flamelet Model (PDF/LFM) [12,23] and the Eddy Dissipation Model (EDM) [1,13,15,17,18,20e 22].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Combustion modeling has been performed using several turbulence models, the standard keε [11,14e22], Reynolds Stress Model [11,12,16,22] and Realizable keε [14,21]. With respect to combustion models for non-premixed combustion for conventional flames, the most used are the Probability Density Function/Laminar Flamelet Model (PDF/LFM) [12,23] and the Eddy Dissipation Model (EDM) [1,13,15,17,18,20e 22]. The Eddy Dissipation Concept (EDC) [14,16] is mainly used for flameless combustion.…”

Section: Literature Reviewmentioning

confidence: 99%