CFD Simulation of Swirling Effect In S-Shaped Diffusing Duct By Swirl Angle of 30°

Ramazan,

doi:10.17950/ijer/v4s4/410

Cited by 2 publications

References 3 publications

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Effects of Synthetic Jets on Swirl Inflow in a Variable-Geometry Twin Air-Intake

Yadav,

Paul,

Jain

et al. 2023

Flow Turbulence Combust

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Air intakes are an integral part of contemporary passenger and military aircraft engines. Their impact on aerodynamic performance across the entire flight envelope is critical to aircraft flight safety, efficiency, and manoeuvrability, especially at high Mach numbers due to shock waves. The high demand for reductions in aircraft weight and size and enhancements in durability, comfort, and thermal and radar signatures compel researchers and engineers to explore new designs and develop efficient air intakes for high-performance aircraft engines. Although a number of studies on air intake have been conducted and reported in the open literature, there is little information available in the public domain on bifurcated twin air intakes using synthetic jet. As a result, the primary goal of this research is to use computational fluid dynamics modelling to investigate the effects of synthetic jets on swirl inflow variable geometry twin air intake aerodynamic performance over a range of Reynolds numbers. Some important parameters (distortion coefficient, non-uniformity index, swirl coefficient, and static and total pressure coefficients) were investigated. Both static and total pressure recovery have been increased at all swirl numbers. A significant decrease in distortion coefficient and swirl coefficient has also been achieved, reaching a 53% reduction in the distortion coefficient and a 62% reduction in the swirl coefficient. The reduction in the non-uniformity index is achieved by 62% for the controlled flow case. The findings show that synthetic jets are effective in controlling the flow separation in the twin air intakes and enhancing aerodynamic performance.

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Effects of Synthetic Jets on Swirl Inflow in a Variable-Geometry Twin Air-Intake

Yadav,

Paul,

Jain

et al. 2023

Flow Turbulence Combust

View full text Add to dashboard Cite

show abstract

Effects of Synthetic Jets on Swirl Inflow in a Variable- Geometry Twin Air-Intake

Yadav

Paul

Jain

et al. 2023

Preprint

View full text Add to dashboard Cite

Air intakes are an integral part of contemporary passenger and military aircraft engines. Their impact on aerodynamic performance across the entire flight envelope is critical to aircraft flight safety, efficiency, and maneuverability, especially at high Mach numbers due to shock waves. The high demand for reduction in aircraft weight and size and enhancement of durability, comfort, and thermal and radar signatures compels researchers and engineers to explore new designs and develop efficient air intakes for high-performance aircraft engines. Although a number of studies on air intake have been conducted and reported in the open literature, there is little information available in the public domain on bifurcated twin air intakes using synthetic jet. As a result, the primary goal of this research is to use high-fidelity computational fluid dynamics modelling to investigate the effects of synthetic jets on swirl inflow variable geometry twin air intake aerodynamic performance over a range of Reynolds numbers. Some important parameters (distortion coefficient, non-uniformity index, swirl coefficient, and static and total pressure coefficients) were investigated. Both static and total pressure recovery have been increased at all swirl numbers. A significant decrease in distortion coefficient and swirl coefficient has also been achieved, reaching 67% in both cases. The reduction in the non-uniformity index is achieved by 62% for the controlled flow case. The findings show that the synthetic jets are effective in controlling the flow separation in the twin air-intakes and enhancing aerodynamic performance.

show abstract

CFD Simulation of Swirling Effect In S-Shaped Diffusing Duct By Swirl Angle of 30°

Cited by 2 publications

References 3 publications

Effects of Synthetic Jets on Swirl Inflow in a Variable-Geometry Twin Air-Intake

Effects of Synthetic Jets on Swirl Inflow in a Variable-Geometry Twin Air-Intake

Effects of Synthetic Jets on Swirl Inflow in a Variable- Geometry Twin Air-Intake

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