Numerical Investigation of Rotation Effects on Anti-vortex Film-Cooling Holes

Al-Zurfi, Nabeel; Turan, Ali; Nasser, Adel

doi:10.1007/s10494-015-9650-0

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Furthermore, film cooling methods are widely used as the external cooling mechanism of gas turbine blades. Pin fin technology, cooling effusion, and transpiration cooling are other external cooling methods of gas turbine blades …”

Section: Fundamentals Of Heat Transfer In Gas Turbinesmentioning

confidence: 99%

“…Previous work by Al‐Zurfi and Turan has assessed the development of a novel cooling technology based on “antivortex” concepts to significantly increase the cooling effectiveness. This has been achieved by employing advanced concepts in fluid mechanics incorporating boundary layer management methodologies . Large eddy simulation (LES) based predictive methods are employed to delineate the underlying aerophysics in order to derive rational design methodologies for film cooling .…”

Section: Fundamentals Of Heat Transfer In Gas Turbinesmentioning

confidence: 99%

“…Pin fin technology, cooling effusion, and transpiration cooling are other external cooling methods of gas turbine blades. 17,18 In film cooling mechanisms, cooling air is pumped out of the blade via multiple small holes in the structure. A thin layer (a film) of cooling air is created on the external surface of the blade, reducing heat transfer from main flow (which is at a higher temperature than the melting point of the blade material).…”

Section: Heat Transfer Through Turbine Rotor Bladesmentioning

confidence: 99%

“…This has been achieved by employing advanced concepts in fluid mechanics incorporating boundary layer management methodologies. 18 Large eddy simulation (LES) based predictive methods are employed to delineate the underlying aerophysics in order to derive rational design methodologies for film cooling. 20 The rotational speed is the dominant factor in determining cooling effectiveness, whilst the antivortex concept reduces the mixing of the mainstream and the coolant jets via reverse vortices.…”

Section: Heat Transfer Through Turbine Rotor Bladesmentioning

confidence: 99%

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Modelling of heat transfer and fluid flow in the hot section of gas turbines used in power generation: A comprehensive survey

2018

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Summary Power generation is one of the major industries or businesses globally. Although, at present, a major attention has been paid towards the sustainable energy technologies, both gas and steam turbines are still heavily used in the power generation sector worldwide. Usually, gas turbines are used to drive an electrical power generator in simple systems, or they are used in combined cycle plants together with steam turbines. This paper presents a comprehensive review on modelling of heat transfer and fluid flow in hot section of gas turbines used in the power generation sector. Visibly, heat transfer and fluid flow characteristics directly affect the thermal efficiency and the overall performance of the gas turbines. Hence, existing models relating to heat transfer and fluid flow inside gas turbines are discussed in detail. Primarily, methods relating to the first principle modelling, empirical modelling, and finite element modelling are reviewed comprehensively, and then, a discussion is provided together with a comparison among models in terms of their advantages and disadvantages. Moreover, some existing issues such as the environmental impact are discussed which still remain as challenges to the power generation industry together with some of the possible future directions for improvements.

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Section: Fundamentals Of Heat Transfer In Gas Turbinesmentioning

confidence: 99%

Section: Fundamentals Of Heat Transfer In Gas Turbinesmentioning

confidence: 99%

Section: Heat Transfer Through Turbine Rotor Bladesmentioning

confidence: 99%

Section: Heat Transfer Through Turbine Rotor Bladesmentioning

confidence: 99%

See 2 more Smart Citations