Skip to main content
SpringerLink
Log in
Book cover

Advances in Fluid and Thermal Engineering pp 297–305Cite as

Effect of Area Ratio on Flow Separation in Annular Diffuser

  • Conference paper
  • First Online:

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

Abstract

Annular diffusers are integral component of the axial flow compressor, combustion chambers and inlet portion of jet engine. In present study flow behavior inside the parallel hub and diverging casing annular diffuser having area ratio 2 to 4 with help of FLUENT has been predicted. The effect of different inlet swirl angles 0°, 7.5°, 12°, 17° and 25° has been studied to predict the reversal of flow and separation of flow from the wall. The result analysis shows that swirl enhances the pressure recovery up to a particular swirl angle and falls thereafter. It also helps in suppressing the flow separation. The effect of inlet swirl on the pressure recovery coefficient has also been figured out.

This is a preview of subscription content, log in via an institution.

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   129.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD   169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD   169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Abbreviations

η :

Diffuser effectiveness

θ :

Divergence angle

AR:

Area ratio

C p :

Pressure recovery coefficient

C pi :

Ideal pressure recovery

L :

Length of diffuser

V av1 :

Average velocity

X/L:

Non-dimensional axial length

References

  1. Agrawal DP, Singh SN, Sapre RN, Malhotra RC (1989) Effect of hub rotation on the mean flow of wide angle annular diffusers. HydroTurbo 1989, Czechoslovakia

    Google Scholar 

  2. Adkins RC, Jacobsen OH, Chevalier P (1983) A premilary study of annular diffuser with constant diameter outer wall. ASIVIE paper no. 83-GT-218

    Google Scholar 

  3. Adkins RC (1983) A simple method for design optimum annular diffusers. ASTVE Paper No. 83-GT-42

    Google Scholar 

  4. Arora BB (2007) Aerodynamic analysis of diffuser. PhD thesis, DU, Delhi

    Google Scholar 

  5. Arora BB, Pathak BD (2005) Flow characteristics of parallel hub diverging casing axial annular diffusers. ISME publication, pp 794–798

    Google Scholar 

  6. Arora BB, Pathak BD (2009) Effect of geometry on the performance of annular diffuser. Int J Appl Eng Res 14(12)

    Google Scholar 

  7. Arora BB (2014) Performance analysis of parallel hub diverging casing axial annular diffuser with 20° equivalent cone angle. Aust J Mech Eng 12(2)

    Google Scholar 

  8. Cockrell DJ, Markland E (1963) A review of incompressible diffuser flow. Aircr Eng 35:286

    Google Scholar 

  9. Coladipietro R, Schneider JM, Sridhar K (1974) Effects of inlet flow conditions on the performance of equiangular annular diffusers. Trans CSME 3(2):75–82

    Google Scholar 

  10. Dovzhik SA, Kartavenko VM (1975) Measurement of the effect of flow swirl on the efficiency of annular ducts and exhaust nozzles of axial turbo-machines. Fluid Mech/Sov Res 4(4):156–172

    Google Scholar 

  11. Hoadley D (1970) Three-dimensional turbulent boundary layers in an annular diffuser. Ph.D. thesis, Department of Engineering, University of Cambridge, London

    Google Scholar 

  12. Kumar DS, Kumar KL (1978) Effect of swirling flow through annular diffusers. In: Ist International conference on centrifugal compressors technology, pp D1-1 to D1-10

    Google Scholar 

  13. Kumar M, Arora BB, Maji S (2010) Analysis of flow separation in wide angle annular diffusers. Int J Appl Eng Res 5(20):3419–3428. ISSN 0973-4562

    Google Scholar 

  14. Mohan R, Singh SN, Agrawal DP (1998) Optimum inlet swirl for annular diffuser performance using CFD. Indian J Eng Mater Sci 5:15–21

    Google Scholar 

  15. Singh SN, Agarwal DP, Sapre RN, Malhotra RC (1994) Effect of inlet swirl on the performance of wide angled diffusers. Indian J Eng Mater Sci 1:63–69

    Google Scholar 

  16. Sharan VK (1972) Diffuser performance correlation. J Aeronaut Soc India 24:415–419

    Google Scholar 

  17. Sovran G, Klomp ED (1967) Experimentally determined optimum geometries for rectilinear diffusers with rectangular, conical or annular cross section. In: Sovran G (ed) Fluid mechanics of internal flow. Elsevier, Amsterdam, pp 270–319

    Google Scholar 

  18. Srinath T (1968) An investigation of the effects of swirl on fl ow regimes and performances of annular diffuser with inner and outer cone angles. MASc thesis, University of Waterloo, Canada

    Google Scholar 

  19. Stevens SJ (1968) The performance of annular diffusers. Proc Inst Mech Eng 182, Part 3D:58–70

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Amity University, Gurgaon, India

    Hardial Singh

  2. Department of Mechanical Engineering, Delhi Technical University, Delhi, India

    B. B. Arora

Authors
  1. Hardial Singh
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. B. B. Arora
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hardial Singh .

Editor information

Editors and Affiliations

  1. Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA

    Pankaj Saha

  2. Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, Delhi, India

    P.M.V. Subbarao

  3. Department of Mechanical Engineering, Amity School of Engineering and Technology, Amity University Uttar Pradesh, NOIDA, Uttar Pradesh, India

    Basant Singh Sikarwar

Rights and permissions

Reprints and permissions

Copyright information

© 2019 Springer Nature Singapore Pte Ltd.

About this paper

Check for updates. Verify currency and authenticity via CrossMark

Cite this paper

Singh, H., Arora, B.B. (2019). Effect of Area Ratio on Flow Separation in Annular Diffuser. In: Saha, P., Subbarao, P., Sikarwar, B. (eds) Advances in Fluid and Thermal Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-6416-7_28

Download citation

  • DOI: https://doi.org/10.1007/978-981-13-6416-7_28

  • Published:

  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-6415-0

  • Online ISBN: 978-981-13-6416-7

  • eBook Packages: EngineeringEngineering (R0)

Publish with us

Policies and ethics

Search

Navigation