Additive Mathematical Model of Aerodynamics in Energy Adaptor of Radial-Flow Fans in Mines

Makarov, N. V.; Makarov, V. N.; Volegzhanin, I.A.; Ugolnikov, A. V.

doi:10.25018/0236-1493-2018-5-0-171-177

Cited by 1 publication

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“…where γ is the air flow circulation around the blade profile in the turbomachine impeller cascade; ω -angular velocity of the relative profile motion, 1 с  .…”

Section: Methodsmentioning

confidence: 99%

“…The environmental and industrial safety protection of enterprises of the mining and oil and gas complex of the Russian Federation is equivalent to 13% of the country's GDP. Significant changes in the aerodynamic parameters of the process environment impair the energy efficiency of turbomachines due to its low adaptability [1][2][3][4]. Competitive growth of enterprises combined with the introduction of environmental technologies updates the task of developing the design and production methodology for the aerodynamically adaptive turbomachines that adequately and economically soundly establish the necessary air parameters in the technological space that implement the concept of optimal innovative subsurface management.…”

Section: Introductionmentioning

confidence: 99%

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Aerodynamic adaptivity criterion in the production methodology of the energy-efficient mine turbomachines

Makarov

Lifanov

et al. 2020

E3S Web Conf.

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Competitive growth of enterprises in the mining and oil and gas industries of the Russian economy, combined with industrial safety requirements, updates the task of developing the design and production methodology for the aerodynamically adaptive turbomachines with a nature-like dominance. Such machines adequately and economically soundly establish the necessary parameters of the air environment in the technological space that implement the concept of optimal subsurface management ecotechnology. This article proposes a production methodology for the energy-efficient turbomachines using the aerodynamic adaptability criterion that determines the relations between the velocity circulation and flow acceleration around the vane cascade profiles as the nature-like dominance of the process for converting the mechanical rotational energy of impeller into the internal energy of the air flow. The Karman theory of bound and free vortices, the Chaplygin-Joukowski-Kutta hypothesis, the conformal mapping method, and curve irregularities are used for development of a mathematical model for controlling the aerodynamic adaptability. It is proved that the control dominant is the intensity of the sources distributed over the turbomachine impeller vane profile that determine the flow diffusivity and as a result the acceleration circulation around the profile. It has been experimentally confirmed that the use of profiles obtained using the proposed technique increases the aerodynamic adaptability coefficient of the turbomachine by 51%, while increasing the area of its cost-effective performance by at least 2 times.

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“…where γ is the air flow circulation around the blade profile in the turbomachine impeller cascade; ω -angular velocity of the relative profile motion, 1 с  .…”

Section: Methodsmentioning

confidence: 99%