Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces

This paper presents CFD simulation results for S-shaped aggressive diffuser to establish grooves effectiveness in improving the flow patterns. Grooves have been proposed perpendicular to the flow direction in different planes along the aggressive diffuser. The simulated flow field was generated with...

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Main Authors: Jessam, R.A., Al-Kayiem, H.H., Nasif, M.S.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25426 /
Published: Asian Research Publishing Network 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994385061&partnerID=40&md5=e6a1cbef1e5c09595901033da78f109f
http://eprints.utp.edu.my/25426/
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spelling utp-eprints.254262021-08-27T13:00:48Z Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces Jessam, R.A. Al-Kayiem, H.H. Nasif, M.S. This paper presents CFD simulation results for S-shaped aggressive diffuser to establish grooves effectiveness in improving the flow patterns. Grooves have been proposed perpendicular to the flow direction in different planes along the aggressive diffuser. The simulated flow field was generated within a normal S-shaped diffuser with curvature of 45°/45°, and then simulated for aggressive diffuser with 30730° by reducing the total length by 22. CFD simulation was performed, under 3D assumption, on both normal and aggressive diffusers, as well as with and without grooves, through ANSYS-FLUENT 16.2 software. The renormalized group k-e model was used to simulate the turbulence. The simulation results were validated and were consistent with the findings of previous experimental and numerical studies. Results obtained in the current study indicated that the combination of grooves could effectively control the flow distortion in S-shaped aggressive diffusers. Predicted performance parameters, such as the coefficients of static pressure recovery and total pressure loss, suggested that the performance of the grooves was able to enhance the pressure recovery by 18.2 and total loss coefficient was reduced by 5.75 in comparison with the case of aggressive diffuser without grooves. ©2006-2016 Asian Research Publishing Network (ARPN). Asian Research Publishing Network 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994385061&partnerID=40&md5=e6a1cbef1e5c09595901033da78f109f Jessam, R.A. and Al-Kayiem, H.H. and Nasif, M.S. (2016) Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces. ARPN Journal of Engineering and Applied Sciences, 11 (20). pp. 12247-12252. http://eprints.utp.edu.my/25426/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This paper presents CFD simulation results for S-shaped aggressive diffuser to establish grooves effectiveness in improving the flow patterns. Grooves have been proposed perpendicular to the flow direction in different planes along the aggressive diffuser. The simulated flow field was generated within a normal S-shaped diffuser with curvature of 45°/45°, and then simulated for aggressive diffuser with 30730° by reducing the total length by 22. CFD simulation was performed, under 3D assumption, on both normal and aggressive diffusers, as well as with and without grooves, through ANSYS-FLUENT 16.2 software. The renormalized group k-e model was used to simulate the turbulence. The simulation results were validated and were consistent with the findings of previous experimental and numerical studies. Results obtained in the current study indicated that the combination of grooves could effectively control the flow distortion in S-shaped aggressive diffusers. Predicted performance parameters, such as the coefficients of static pressure recovery and total pressure loss, suggested that the performance of the grooves was able to enhance the pressure recovery by 18.2 and total loss coefficient was reduced by 5.75 in comparison with the case of aggressive diffuser without grooves. ©2006-2016 Asian Research Publishing Network (ARPN).
format Article
author Jessam, R.A.
Al-Kayiem, H.H.
Nasif, M.S.
spellingShingle Jessam, R.A.
Al-Kayiem, H.H.
Nasif, M.S.
Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
author_sort Jessam, R.A.
title Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
title_short Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
title_full Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
title_fullStr Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
title_full_unstemmed Flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
title_sort flow control in s-shaped aggressive diffuser using grooves on the inner and outer surfaces
publisher Asian Research Publishing Network
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994385061&partnerID=40&md5=e6a1cbef1e5c09595901033da78f109f
http://eprints.utp.edu.my/25426/
_version_ 1741196972876890112
score 11.62408

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