Effect of Film-Hole Shape on Turbine-Blade Heat-Transfer Coefficient Distribution

Teng, Shuye; Han, Je-Chin; Poinsatte, Philip E.

doi:10.2514/2.6610

Cited by 16 publications

(2 citation statements)

References 18 publications

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“…These parameters refer to the attribute parameters of an FHC, which have physical meanings such as the hydraulic radius and the flow passage area. Film holes have different geometric shapes and structures, such as the cylindrical holes, converged slot-holes, and forward diffused holes 29 (see Figure 2). And different film holes are often abstracted as the same orifice model.…”

Section: Parameter Extraction Problems For Fhcsmentioning

confidence: 99%

A rapid parameter configuration method for film hole component in pipe-net calculation

Tao

Wang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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Film hole component is one of the most important cooling components in pipe-net calculation for blade design. However, owing to a large number of gas film holes, manual parameter configuration for film hole components will affect the efficiency of pipe-net calculation. Extracting parameters from the geometric structure of film holes automatically could significantly shorten the time consumption of pipe-net calculation. In this paper, numeric analysis parameter and group data required by film hole components were summarized and analyzed, based on which a parameter configuration strategy was proposed. Aiming at the extraction of group data, a film hole grouping method was presented. By converting the grouping requirements in fluid-heat analysis into a geometric row pattern recognition problem, it further redefines the geometric row as a linear distribution by a projection method and a parametric mapping method and finally solves the grouping problem by a linear search algorithm. A numeric parameter extraction method was put forward to redefine analysis parameters with geometric properties and identify certain geometry primitives. The proposed algorithm and method are verified with instances. The results illustrate that our method could shorten parameter configuration process of film hole component into several minutes from several hours in manual, with more reliable accuracy.

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Section: Parameter Extraction Problems For Fhcsmentioning

confidence: 99%

A rapid parameter configuration method for film hole component in pipe-net calculation

Tao

Wang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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show abstract

“…The aerodynamic performance of the console was also investigated, and it was shown that the aerodynamic loss due to a console is significantly less than for fan shaped or cylindrical film cooling-holes. Teng et al (2001a and reported the effect of unsteady wake on gill-hole film cooling with shaped holes. Results showed the film cooling effectiveness for laidback fan-shaped hole increases but heat transfer coefficients decreases as compared with the cylindrical holes.…”

Section: Work In 1990smentioning

confidence: 99%

A Review of Hole Geometry and Coolant Density Effect on Film Cooling

Ekkad¹,

Han²

2015

Frontiers in Heat and Mass Transfer

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Improved film cooling hole geometries and effect of coolant density on film cooling have been a focus since the 1970s. One of the first studies on modifying hole exit to improve film cooling effectiveness and quantifying coolant density effect was from Prof. Goldstein's group. This paper provides an overview of the development and implementation of hole exit geometries as well as coolant density study over the past few decades and the impact on future studies of advanced hole geometries under realistic engine-like coolant-to-mainstream density ratio conditions. This work is not intended to be a comprehensive review of the literature.

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The characteristics and divergence of fan-shaped and cylindrical holes on the suction side of a turbine blade under rotating conditions

Zhao

Zhou

et al. 2019

International Journal of Heat and Mass Transfer

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Effect of Film-Hole Shape on Turbine-Blade Heat-Transfer Coefficient Distribution

Cited by 16 publications

References 18 publications

A rapid parameter configuration method for film hole component in pipe-net calculation

A rapid parameter configuration method for film hole component in pipe-net calculation

A Review of Hole Geometry and Coolant Density Effect on Film Cooling

The characteristics and divergence of fan-shaped and cylindrical holes on the suction side of a turbine blade under rotating conditions

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