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Numerical simulation of non-uniform roughness distribution on compressor performance

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A Correction to this article was published on 06 March 2018

This article has been updated

Abstract

This paper investigated the roughness of NASA Stage 35 test compressor. Surface roughness can change the geometric line in the microcosm, which causes the compressor operation to deviate from the design point under working conditions. Wall function was used in this study to describe roughness. Roughness calculation model in non-uniform distribution was established along the chord and spanwise directions. Basing on certain rules, rotor blades were attached with roughness to determine the influence of blade roughness position distribution on the overall performance of the compressor and internal flow. Results show that when roughness was distributed from the blade leading edge to 40% of the chord, the compressor performance was greatly influenced; in severe performance, compressor efficiency decreased by more than 2%. Roughness position distribution in blade height direction exhibited a minimal effect on the entire compressor performance, which can be ignored.

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Change history

  • 06 March 2018

    In the original publication there were some corrections to be updated.

Abbreviations

ρ :

Air density

u + :

Near surface velocity

u τ :

Frication velocity

U t :

Tangential velocity

Δy :

Distance to the wall

y + :

Dimensionless distance to the wall

μ :

Viscosity coefficient

A :

Total surface area

τ w :

Wall shear stress

κ :

Constant number of von Karman

C :

Constant number related to roughness

B :

Constant number of rough height

ΔB :

Offset of rough height

h + :

Dimensionless number of roughness

h :

Average roughness of blade surface roughness

h s :

Average of roughness parameters

h + s :

Dimensionless number of h s

ν :

Dynamic viscosity

k s :

Equivalent gravel roughness

\(\bar{k}_{s}\) :

Average roughness

C p :

Pressure coefficient factor C p  = (P 0 − P)/(P 0 − P 2S)

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Acknowledgement

The authors would like to knowledge the financial assistance from the National Natural Science Foundation of China (Project 51309063, U1460202) and Specialized Research Fund for the Doctoral Program of Higher Education (Project No. 20132304120012).

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Authors and Affiliations

  1. College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, China

    Haiou Sun, Meng Wang, Zhongyi Wang & Jingyuan Ma

Authors
  1. Haiou Sun
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  2. Meng Wang
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  3. Zhongyi Wang
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  4. Jingyuan Ma
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Correspondence to Zhongyi Wang.

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Sun, H., Wang, M., Wang, Z. et al. Numerical simulation of non-uniform roughness distribution on compressor performance. J Mar Sci Technol 23, 389–397 (2018). https://doi.org/10.1007/s00773-017-0483-5

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