The influence of airflow on fuel spray characteristics from a slit injector

Moon, Seoksu; Bae, Choongsik; Choi, Jaehoon; Abo-Serie, Essam

doi:10.1016/j.fuel.2006.07.023

Cited by 34 publications

(12 citation statements)

References 10 publications

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“…26 Using PDA, the velocity and concentration of two-phase ow can be measured. 4,6,16,[28][29][30][31] The PDA system uses the proven phase Doppler principle for simultaneous non-intrusive and real-time measurements of three velocity components and turbulence characteristics, and makes use of new methods for determination of phase differences between Doppler signals received by three detectors located in different positions. The instrument uses 60Â ber ow optics and 57 Â 10 PDA receiver optics.…”

Section: Methodsmentioning

confidence: 99%

Influence of offset angle of mid-secondary air nozzles on gas-particle flow characteristics in a furnace

Wang

Cheng

et al. 2018

RSC Adv.

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A three-component particle-dynamics anemometer was used to measure the characteristics of two-phase gas-particle flows in a primary air nozzle using a gas/particle two-phase test facility. The jet trajectory of primary air velocities, Reynolds stress and particle concentration profiles were obtained. Based on this, the advantages and disadvantages of increasing the offset angle were analyzed to optimize performance. The results show that gas-particle slippage is not noticeable in the furnace, even though the midsecondary air offset angle changes. Within the jet's free developing zone, the location of the peak concentration does not change with the mid-secondary air offset angles. Properly enlarging the offset angle of mid-secondary air nozzles will delay the mixing of the secondary air into the primary-air-andcoal mixture and realize horizontal-staged combustion in a furnace. It also can enhance the stability of airflow and form a better blended jet tail, meanwhile reducing the vortex at the back-fire side and avoiding a short circuiting of the airflow. It is favorable for increasing combustion efficiency and preventing slagging and high-temperature corrosion.

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Section: Methodsmentioning

confidence: 99%

Influence of offset angle of mid-secondary air nozzles on gas-particle flow characteristics in a furnace

Wang

Cheng

et al. 2018

RSC Adv.

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“…The velocity is measured from the frequency of the Doppler burst as for LDA [21]. Using PDA, the velocity, size and concentration of two-phase flow can be measured [22][23][24][25]. The main factors that determine an accurate concentration value are the setting parameters of the PDA system, the properties of particles and particle concentration.…”

Section: Gas/particle Two-phase Experimental Equipment and Methodsmentioning

confidence: 99%

Study on flow fields of centrally fuel rich swirl burner and its applications

Chen

Jing

et al. 2009

Korean J. Chem. Eng.

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Experiments on a single-phase test facility were done to optimize primary air outlet cones of a centrally fuel rich swirl coal combustion burner. On the basis of optimized results from the single-phase test, a three-component particle-dynamics anemometer was used to measure, in the near-burner region, the characteristics of gas/particle two-phase flows for the burner with two primary air outlet cones, on a gas/particle two-phase test facility. Velocities, RMS velocities and particle volume flux profiles were obtained. According to the results, the primary air outlet cone structure of the centrally fuel rich burner was matching a 670 ton per hour boiler. The performance of the burner on a 670 ton per hour boiler was studied.

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“…Należy przy tym pamiętać, że wartość kąta "" uwarunkowana jest stosunkiem gęstości paliwa do gęstości ośrodka, do którego paliwo jest wtryskiwane, a geometria strugi paliwa zależy również od kształtu [14] i położenia otworków wtryskiwacza [15], kształtu krawędzi otworków oraz własności paliwa [16], ruchu mas w ośrodku, [17] i przebiegu procesu parowania paliwa, [18]. Należy jednak zaznaczyć, że kąt wtrysku "" nie ulega znacznym zmianom wraz z przebiegiem wtrysku.…”

Section: Rys2 Schemat Geometrii Zastosowanych Wtryskiwaczy Paliwa[12]unclassified

Model of the combustion process in the marine 4-stroke diesel engine

Kowalski¹

2015

Mechanik

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MODEL OF THE COMBUSTION PROCESS IN THE MARINE 4-STROKE DIESEL ENGINE SUMMARY Manuscript presents a model of the combustion process in marine four-stroke diesel engine to determine the nitric oxides fraction (NOx) in the exhaust gas. This is iterative, 3-dimensional model, built on geometric mesh of the engine cylinder chamber. The model includes mathematical description of fuel injection, spray, evaporation and auto ignition and flame propagation in the cylinder. In order to determine the NOx fraction, the heat exchange phenomena description between structural elements of the cylinder has been done. The input data and boundary conditions are collected from the direct measurements. The model has been successfully validated based on the characteristics of the in-cylinder combustion pressure and NOx and oxygen fractions in the exhaust gas for all considered loads of the engine.

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The influence of airflow on fuel spray characteristics from a slit injector

Cited by 34 publications

References 10 publications

Influence of offset angle of mid-secondary air nozzles on gas-particle flow characteristics in a furnace

Influence of offset angle of mid-secondary air nozzles on gas-particle flow characteristics in a furnace

Study on flow fields of centrally fuel rich swirl burner and its applications

Model of the combustion process in the marine 4-stroke diesel engine

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