Investigation of Turbulence Parameters Influence on Results of CFD Modeling of Flow in Ultrasonic Flowmeter

Роман, Віталій; Матіко, Федір; Kostyk, Igor

doi:10.23939/jeecs2021.01.073

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…The researchers' understanding of the probe disturbance is still insufficient. Some manufacturers are not clear about which installation method can introduce the smallest measurement error due to lack of experience [6] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Probe Local Flow Field Distortion on Measurement Results of Ultrasonic Flowmeter

Chen¹,

Li²,

Mu³

2023

Proceedings of the 19th International Flow Measurement Conference 2022 on Flow Measurement - FLOMEKO 2022

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The installation of the intrusive probe will disturb the internal flow field inside the ultrasonic flowmeter, which will affect the measurement results. Probe protruded into the flow or recessed into the wall is one of the most important uncertainty sources of ultrasonic transit-time flowmeters. There are three ways to install the probe of the ultrasonic flowmeter in the pipeline: fully convex installation (the probe protrudes into the pipeline), fully concave installation (the probe is installed to form a depression on the pipe wall) and tangent installation (the center line of the probe is flush with the pipe wall, a part of the probe protrudes from the pipe, and a depression is also formed on the pipe wall).In this paper, for the small and medium-diameter ultrasonic flowmeters with double-sided 8-channel arrangement, numerical simulations are carried out under the fully convex, fully concave and tangent probe installation modes, respectively. By analyzing the flow field distribution near the probe and the change of the velocity profile on the path line, the physical mechanism of the influence of the flow separation caused by the mainstream flow near the probe on the measurement results of the ultrasonic flowmeter is revealed. Then the influence of probe disturbance on the measurement results of ultrasonic flowmeter under different pressure and flow rate was analyzed by experiments, and the error correction model is proposed according to the experimental results. The research contents provide a theoretical basis for the installation and use of ultrasonic flowmeter.

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Section: Introductionmentioning

confidence: 99%

Influence of Probe Local Flow Field Distortion on Measurement Results of Ultrasonic Flowmeter

Chen¹,

Li²,

Mu³

2023

Proceedings of the 19th International Flow Measurement Conference 2022 on Flow Measurement - FLOMEKO 2022

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Study of Different Designs of Chevron for Effective Noise Reduction in Jet Engines

Rao

2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Due to their remarkable efficiency and efficacy, chevrons have emerged as a prominent subject of investigation within the Aviation Industry, primarily aimed at mitigating aircraft noise levels and achieving a quieter airborne experience. These chevrons function by inducing streamwise vortices into the shear layer, thereby augmenting the mixing process and resulting in a noteworthy reduction of low-frequency noise emissions. This paper aims to conduct a comparative computational analysis encompassing seven distinct chevron designs and one without chevrons. It also summarizes the previous works that led to the advancement of this technology. The size and configuration of the chevrons with the jet engine nacelle were designed to match the nozzle diameter of 100.48mm and 56.76mm, utilizing the advanced SolidWorks CAD modeling software. Subsequently, the computational analysis for each design was carried out using the SolidWorks Flow Simulation software. When it comes to civilian aircraft, it can be stated that the noise emitted in case of landing and take-off is comparatively high, so the parameters considered to solve the model were taken accordingly. The results were obtained in the form of acoustic power level contours and turbulent energy contours which unambiguously exhibit the effectiveness of each of the chevron designs that were taken into consideration for study. The acquired solutions were finally used for a comparative study among the designs. The results unequivocally demonstrated that the incorporation of chevrons consistently led to a reduction in sound pressure levels across all cases. Notably, the round-shaped chevron design exhibited superior performance compared to the other designs, boasting a substantial noise reduction of 2.85%.</div></div>

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Investigation of Turbulence Parameters Influence on Results of CFD Modeling of Flow in Ultrasonic Flowmeter

Cited by 2 publications

References 4 publications

Influence of Probe Local Flow Field Distortion on Measurement Results of Ultrasonic Flowmeter

Influence of Probe Local Flow Field Distortion on Measurement Results of Ultrasonic Flowmeter

Study of Different Designs of Chevron for Effective Noise Reduction in Jet Engines

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