Experimental Investigation of the Effect of a Novel Pea Jet Hole on Thermal Behavior of Jets Injected into a Crossflow

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Pouladrang Y.; RAMEZANIZADEH M.

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Journal Paper

Paper Information

Journal: FLUID MECHANICS AND AERODYNAMICS JOURNAL Year:2019 | Volume:7 | Issue:2 Page(s): 33-45

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Title

Experimental Investigation of the Effect of a Novel Pea Jet Hole on Thermal Behavior of Jets Injected into a Crossflow

Author(s)

Pouladrang Y. | RAMEZANIZADEH M. | Issue Writer Certificate

Keywords

Film Cooling EffectivenessQ1

Novel Jet Hole GeometryQ1

Pea Jet HoleQ1

Experimental TestQ1

Wind TunnelQ2

Abstract

In film cooling, coolant air is injected over the surface to provide a protective cool film against the high temperature gases. Film-cooling performance is largely influenced by the jet hole shape. And thus optimizing the hole shape configuration is necessary to achieve better cooling performance. The present study investigated the cooling effectiveness of the novel incomplete cylindrical jet hole (Pea Jet Hole) experimentally, using an infrared thermography method. Steady state heat transfer experiments were performed at free stream Reynolds number, based on jet hole diameter of 10, 000, over a flat plate. Measurements were carried out at four blowing ratios (M=ρ jetVjet/ρ ∞ V∞ ) of 0. 4, 0. 5, 0. 7, and 0. 8. Out results show that the novel Pea Jet Hole has an optimum blowing ratio of 0. 7 and at the same blowing ratio, in comparison to the cylindrical jet hole, the cooling effectiveness of the new geometry is higher. Another words applying the same amount of injected fluid, the coolout fluid is distributed more uniformly over the surface.

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APA: Copy

Pouladrang, Y., & RAMEZANIZADEH, M.. (2019). Experimental Investigation of the Effect of a Novel Pea Jet Hole on Thermal Behavior of Jets Injected into a Crossflow. FLUID MECHANICS AND AERODYNAMICS JOURNAL, 7(2 ), 33-45. SID. https://sid.ir/paper/245511/en

Vancouver: Copy

Pouladrang Y., RAMEZANIZADEH M.. Experimental Investigation of the Effect of a Novel Pea Jet Hole on Thermal Behavior of Jets Injected into a Crossflow. FLUID MECHANICS AND AERODYNAMICS JOURNAL[Internet]. 2019;7(2 ):33-45. Available from: https://sid.ir/paper/245511/en

IEEE: Copy

Y. Pouladrang, and M. RAMEZANIZADEH, “Experimental Investigation of the Effect of a Novel Pea Jet Hole on Thermal Behavior of Jets Injected into a Crossflow,” FLUID MECHANICS AND AERODYNAMICS JOURNAL, vol. 7, no. 2 , pp. 33–45, 2019, [Online]. Available: https://sid.ir/paper/245511/en

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