Numerical Investigation of the Effects of Lattice Array Structures on Film Cooling Performance

Author:

Fu QiangORCID,Luo Xiaobo,Chen Wei,Chyu Minking K.

Abstract

To better understand the mechanism influencing the periodic lattice structures in gas turbine blade cooling, these numerical simulations present a systematic comparison of the effects in cases involving pin-fin, Kagome, and BCC lattice arrays on film-cooling effectiveness under three blowing ratios (i.e., M = 0.5, 1.0, and 1.5). The results indicate that the introduction of lattice array structures improves film-cooling effectiveness within the whole streamwise range, especially downstream of the film hole. With an increase in the blowing ratio, the superiority of lattice array structures relative to those without a lattice becomes increasingly evident. The local film-cooling effectiveness can be increased, to a maximum of about 100%, under a blowing ratio of 1.5. The secondary flow induced by the lattice array structure at the internal flow channel increases the TKE and accelerates the development of vortices in the film cooling hole. Using the lattice array model, the improvement of the Kagome and BCC lattice arrays in terms of film cooling is better than those of pin-fins. In addition, the effect of lattice arrays on film-cooling effectiveness is different at various blowing ratios, and the lattice array structures have little impact on the film cooling at a relatively low blowing ratio.

Funder

National Natural Science Foundation of China

Science and Technology Major Project of Sichuan Province

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Reference26 articles.

1. Review of aero-turbine blade cooling technologies;Ni;Gas Turbine Technol.,2005

2. Review on research of heat transfer performance for gas turbine blade cooling channel;Xie;Proc. CSEE,2017

3. Film cooling performance and flow characteristics of internal cooling channels with continuous/truncated ribs

4. A Brief Review on Numerical Studies on Film Cooling Effectiveness

5. Numerical simulation on the effect of jet nozzle position on impingement cooling of gas turbine blade leading edge

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