Film cooling effectiveness with injection through circular holes embedded in a transverse trench

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Film cooling effectiveness with injection through circular holes embedded in a transverse trench	470 KB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1134/S0869864315030075

Title: Film cooling effectiveness with injection through circular holes embedded in a transverse trench
Creator: Pakhomov, Maksim A.
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Khalatov, Artem
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Borisov, I. I.
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Terekhov, Victor I.
Date: 2015
DOI: 10.1134/S0869864315030075
Description: Results of a numerical study of the thermal effectiveness of a gas wall screen implemented via gas blowing through cylindrical inclined holes embedded in a transverse trench are reported. The calculations were performed using 3D Reynolds-averaged Navier–Stokes equations, with the flow turbulence being modeled by means of the Reynolds-stress model. Blowing into the trench was compared to the conventional cooling technique using gas blowing without a trench. The film cooling effectiveness with gas injection through circular holes embedded in trench exceeds significantly the effectiveness of blowing without a trench. Such a method of coolant supply into the flow proved to be especially advantageous at high blowing ratios. Due to the formation of vortical structures inside the trench, a more uniform cooling flow in the spanwise direction can be achieved. A comparative analysis is indicative of acceptable qualitative agreement of the experimental and predicted data.

Created: 28-11-2016

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НИИ прикладной математики и механики Film cooling effectiveness with injection through circular holes embedded in a transverse trench