Modeling of pulverized coal combustion processes in a vortex furnace of improved design. Part 1: Flow aerodynamics in a vortex furnace

Krasinsky, D. V.; Саломатов, В. В.; Ануфриев, И. С.; Шарыпов, О. В.; Shadrin, E. Yu.; Anikin, Yu. A.

doi:10.1134/s0040601515020044

Cited by 12 publications

(5 citation statements)

References 1 publication

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“…The gas phase mixture is represented by the The interphase exchange of mass, momentum and heat transfer is accounted following the Particle-Source-In-Cell method [10]. Detailed description of the used models, assumptions, boundary conditions and numerical algorithm is given in [3,6]. Computations were performed with the use of CFD package FLUENT.…”

Section: Mathematical Model and Computational Resultsmentioning

confidence: 99%

“…Two new modifications of the basic vortex furnace design were proposed and studied [5][6][7] at the Institute of Thermophysics SB RAS. These enhancements (called a dual-nozzle design) are characterized by additional tangential-injection nozzles mounted at the bottom or at the upper part of the vortex combustion chamber, allowing for more flexible control of the aerodynamic structure and the furnace regime parameters.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study of aerodynamics and brown coal combustion in the vortex furnace with air excess variation

Krasinsky

2017

MATEC Web Conf.

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Abstract.The results of numerical modelling of 3D turbulent two-phase reacting flow with account for all the principal heat and mass transfer processes during the pulverized brown coal combustion in the vortex furnace of a power plant boiler unit have been presented. For two computational cases where air excess coefficient D was varied (set to 1.15 and 1.25), the detailed aerothermochemical 3D structure of reacting flow in the furnace volume has been revealed. The comparison of integral heat engineering parameters and NOx emissions obtained in the two cases has shown a slightly improved vortex furnace performance in the case D=1.25.

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Section: Mathematical Model and Computational Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical study of aerodynamics and brown coal combustion in the vortex furnace with air excess variation

Krasinsky

2017

MATEC Web Conf.

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“…Dimensions of the model are XYZ 3201200256 mm (scale 1:25), and the diameter of the vortex combustion chamber is 320 mm. A distinctive feature of this design compared to the previously studied one [3] (where the additional tangential inlet is located in the lower part of the combustion chamber), is the vertical arrangement of the nozzles of the secondary blast, and the presence of the "visor" inside the vortex chamber to prevent entrainment of fuel particles from the combustion chamber. The advantages of this design of the vortex furnace are described in [1,2].…”

Section: Experimental Setup and Measurement Techniquesmentioning

confidence: 99%

Identification of possible non-stationary effects in a new type of vortex furnace

2017

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Abstract. The article presents the results of an experimental study of pressure and velocity pulsations in the model of improved vortex furnace with distributed air supply and vertically oriented nozzles of the secondary blast. Investigation of aerodynamic characteristics of a swirling flow with different regime parameters was conducted in an isothermal laboratory model (in 1:25 scale) of vortex furnace using laser Doppler measuring system and pressure pulsations analyzer. The obtained results have revealed a number of features of the flow structure, and the spectral analysis of pressure and velocity pulsations allows to speak about the absence of large-scale unsteady vortical structures in the studied design.

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“…Dimensions of the model are XYZ 320u1200u256 mm, and the diameter of the vortex combustion chamber is 320 mm. A distinctive feature of this design compared to the previously studied one [3] is the vertical arrangement of the nozzles of the secondary blast, and the presence of the "visor" inside the vortex chamber to prevent entrainment of fuel particles from the combustion chamber.…”

Section: Experimental Setup and Measurement Techniquesmentioning

confidence: 99%

The analysis of flow stability in a vortex furance model

et al. 2016

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Results of experimental study of the pulsation characteristics of a flow in isothermal model of vortex furnace with vertically oriented nozzles of secondary blast are obtained. With use of laser Doppler measuring system and pressure pulsations analyzer the data about the pressure and velocity pulsations has been received. Spectra of pressure and velocity pulsations at various regime parameters are presented. Absence of non-stationary structures, such as precessing vortex core of a flow, is shown.

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Modeling of pulverized coal combustion processes in a vortex furnace of improved design. Part 1: Flow aerodynamics in a vortex furnace

Cited by 12 publications

References 1 publication

Numerical study of aerodynamics and brown coal combustion in the vortex furnace with air excess variation

Numerical study of aerodynamics and brown coal combustion in the vortex furnace with air excess variation

Identification of possible non-stationary effects in a new type of vortex furnace

The analysis of flow stability in a vortex furance model

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