Affiliation:
1. Bryansk State Technical University
Abstract
The results of a numerical study of a flat plate containing honeycomb cells without holes for blowing cooling air onto the plate surface, and a flat plate containing honeycomb cells with holes in each cell for blowing cooling air onto the plate surface are presented. Holes in the cells of the honeycomb structure for blowing cooling air on the outer surface of the plate contribute to creating a film of cooling air on the outer surface of the plate (film cooling). Since there are more holes for blowing cooling air in the honeycomb design than in film cooling, this method of cooling a gas turbine blade is comparable to effusion cooling, which is considered one of the most effective methods, and this cooling method is located between film and transpiration (porous) cooling. The study used a combined cooling method that puts together both a convective cooling method due to the swirling movement of cooling air inside the honeycomb structure cells located on the blade inner surface, and an effusion cooling method, implemented by blowing cooling air onto the blade surface through holes in each honeycomb cell.
Publisher
Bryansk State Technical University BSTU
Reference15 articles.
1. Хабибуллин И.И. Интенсификация теплообмена двухполостными диффузорными выемками: специальность 01.04.14 "Теплофизика и теоретическая теплотехника": диссертация на соискание ученой степени кандидата технических наук / Хабибуллин Ильмир Ильдарович. - Казань, 2016. - 124 с., Khabibullin I.I. Intensification of Heat Exchange With Two-Cavity Diffuser Recesses. Candidate’s Thesis in Engineering. Kazan; 2016.
2. Xu J. et al. Systematic Comparison on Convective Heat Transfer Characteristics of Several Pin Fins for Turbine Cooling // Crystals. - 2021. - Vol. 11(8). - P. 1-17., Xu J, et al. Systematic Comparison on Convective Heat Transfer Characteristics of Several Pin Fins for Turbine Cooling. Crystals. 2021;11(8):1-17.
3. Moradi T., Shahbazian H., Hoseinalipour M., Sunden B. Effects of wavy ribs on vortex generation and thermal-hydraulic performance in a rotating rectangular channel // Applied Thermal Engineering. - 2023. - Vol. 222. - P. 1-20., Moradi T., Shahbazian H., Hoseinalipour M., Sunden B. Effects of Wavy Ribs on Vortex Generation and Thermal-Hydraulic Performance in a Rotating Rectangular Channel. Applied Thermal Engineering. 2023;222:1-20.
4. Rao Y., Li B., Feng Y. Heat transfer of turbulent flow over surfaces with spherical dimples and teardrop dimples // Experimental Thermal and Fluid Science. - 2015. - Vol. 61. - P. 201-209., Rao Y., Li B., Feng Y. Heat Transfer of Turbulent Flow Over Surfaces With Spherical Dimples and Teardrop Dimples. Experimental Thermal and Fluid Science. 2015;61:201-209.
5. Zhou W., Rao Y., Hu H. An experimental investigation on the characteristics of turbulent boundary layer flows over a dimpled surface // Transactions of the ASME. J. of Fluids Engineering. - 2016. - Vol. 138. № 2. - P. 1-13., Zhou W., Rao Y., Hu H. An Experimental Investigation on the Characteristics of Turbulent Boundary Layer Flows Over a Dimpled Surface. Journal of Fluids Engineering. 2016;138(2):1-13.