Impact of the chosen turbulent flow empirical model on the prediction of sound radiation and vibration by aircraft panels

Rocha, Joana

doi:10.1016/j.jsv.2016.03.026

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…According to the principles of fluid mechanics, a turbulent airflow in a passage could cause vibration, leading to structural damage. This phenomenon has already been established in other engineering disciplines, such as in nuclear plants [3], aircraft design [4], and structural design [5]. Thus, it could be argued that a turbulent flow would cause vibration that could damage soft tissues, vessels, and nerves.…”

Section: List Of Symbolsmentioning

confidence: 92%

Turbulent Kinetic Energy of Flow during Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Faizal¹,

Khor²,

Yaakob³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

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This paper aims to investigate and present the numerical investigation of airflow characteristics using Turbulent Kinetic Energy (TKE) to characterize the upper airway with obstructive sleep apnea (OSA) under inhale and exhale breathing conditions. The importance of TKE under both breathing conditions is that it show an accurate method in expressing the severity of flow in sleep disorder. Computational fluid dynamics simulate the upper airway's airflow via steady-state Reynolds-averaged Navier-Stokes (RANS) with k-ω shear stress transport (SST) turbulence model. The three-dimensional (3D) airway model is created based on the CT scan images of an actual patient, meshed with 1.29 million elements using Materialise Interactive Medical Image Control System (MIMICS) and ANSYS software, respectively. High TKE were noticed around the region after the necking (smaller cross-sectional area) during the inhale and exhale breathing. The turbulent kinetic energy could be used as a valuable measure to identify the severity of OSA. This study is expected to provide a better understanding and clear visualization of the airflow characteristics during the inhale and exhale breathing in the upper airway of patients for medical practitioners in the OSA research field.

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Section: List Of Symbolsmentioning

confidence: 92%

Turbulent Kinetic Energy of Flow during Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Faizal¹,

Khor²,

Yaakob³

et al. 2023

Computer Modeling in Engineering &Amp; Sciences

View full text Add to dashboard Cite

show abstract

“…aircraft design [7,8], and structural design [9]. Thus, it could be very well argued that a turbulent flow would cause vibration that could damage soft tissues, vessels, and nerves.…”

Section: Introductionmentioning

confidence: 99%

Turbulent Kinetic Energy of Flow During Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Faizal

Ghazali

Khor

et al. 2021

Preprint

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This paper aims to investigate and present the numerical investigation of airflow characteristics using Turbulent Kinetic Energy (TKE) to characterize the upper airway with obstructive sleep apnea (OSA) under inhale and exhale breathing conditions. The importance of TKE under both breathing conditions can show an accurate method in expressing the severity of flow in sleep disorder. Computational fluid dynamics are used to simulate the upper airway's airflow via steady-state Reynolds-averaged Navier-Stokes (RANS) with k–ω shear stress transport (SST) turbulence model. The three-dimensional (3D) airway model is created based on the CT scan images of an actual patient, meshed with 1.29 million elements using Materialise Interactive Medical Image Control System (MIMICS) and ANSYS software, respectively. Both high TKE and Rev were noticed around the region after the necking (smaller cross-sectional area) during the inhale and exhale breathing. The turbulent kinetic energy could be used as a valuable measure to identify the severity of OSA. This study is expected to provide a better understanding and clear visualization of the airflow characteristics during the inhale and exhale breathing in the upper airway of patients for the medical practitioners in the OSA research field.

show abstract

Wave Finite Element Schemes for Vibrations and Noise Under Turbulent Boundary Layer Excitation

Errico

Franco

Rosa

et al. 2021

Flinovia—Flow Induced Noise and Vibration Issues and Aspects-Iii

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Impact of the chosen turbulent flow empirical model on the prediction of sound radiation and vibration by aircraft panels

Cited by 7 publications

References 13 publications

Turbulent Kinetic Energy of Flow during Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Turbulent Kinetic Energy of Flow during Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Turbulent Kinetic Energy of Flow During Inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

Wave Finite Element Schemes for Vibrations and Noise Under Turbulent Boundary Layer Excitation

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