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Investigation on noise of rotary compressors using fluid-structure interaction

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Abstract

Air conditioners consist of heat exchangers, fans, motors and compressors as major components. From the viewpoint of noise, the compressor occupies a very large portion. In this study, rotary compressor which is mainly used in domestic air conditioner was discussed. The noise generated from the rotary compressor can be classified into pressure pulsation of the refrigerant and structural vibration. During the operation of the compressor, the behavior of the refrigerant and the internal structure of the compressor strongly interact with each other. Therefore, an integrated interpretation is required when analyzing from the viewpoint of refrigerant. In this study, the rotary compressor behavior is implemented using the FSI technique and the noise and valve behavior with and without discharge muffler are analyzed.

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Abbreviations

x :

Coordinates

t :

Time

ρ :

Density

P :

Pressure

U :

Velocity component

τ :

Stress tensor

h tot :

Internal energy

h :

Internal energy

λ :

Thermal conductivity

µ :

Molecular viscosity

δ ij :

Direc delta

F :

External force

[R]:

Matrix of effective suface

[M]:

Matrix of mass

[K]:

Matrix of damping

F addh :

Adhesion force

C :

Stiction coefficient

l 0 :

Initial thickness of the oil

l oil :

Thickness of the oil

d d :

Outer seat diameters

d u :

Inner seat diameters

NR :

Noise reduction

SPL :

Sound pressure level

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Acknowledgments

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202300). In addition, this research was also supported by a joint project between LG Electronics and Seoul National University in 2015–2016.

Author information

Authors and Affiliations

  1. AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-744, Korea

    Seokjong Jang, Hanahchim Choung & Seoryong Park

  2. Center for Environmental Noise and Vibration Research, Engineering Research Institute, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-744, Korea

    Soogab Lee

Authors
  1. Seokjong Jang
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  2. Hanahchim Choung
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  3. Seoryong Park
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  4. Soogab Lee
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Corresponding author

Correspondence to Soogab Lee.

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Recommended by Associate Editor Doo Ho Lee

Seokjong Jang is a Ph.D. student in the Department of Mechanical and Aerospace Engineering at Seoul National University. He received his M.S. degree from the Department of Mechanical and Aerospace Engineering at Seoul National University in 2014. His research interests are in the area of computational aeroacoustics and compressor noise.

Hanahchim Choung is a Ph.D. student in the Department of Mechanical and Aerospace Engineering at Seoul National University. He received his M.S. degree from the Department of Mechanical and Aerospace Engineering at Seoul National University in 2016. His research interests are in the area of Computational Aeroacoustics and Immersed Boundary Method.

Seoryong Park is a Ph.D. student in the Department of Mechanical and Aerospace Engineering at Seoul National University. He received his B.S. degree from the School of Aerospace and Mechanical Engineering at Korea Aerospace University in 2012. His research interest is in the acoustic loads on the launch vehicle.

Soogab Lee is a Professor in the Department of Mechanical and Aerospace Engineering at Seoul National University. He received his Ph.D. in Aeronautics and Astronautics from Stanford University in 1992. He worked as a Research Scientist at NASA Ames Research Center from 1992 to 1995. His research interests are in the area of aerodynamics and acoustics of rotating machines including wind turbine systems.

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Jang, S., Choung, H., Park, S. et al. Investigation on noise of rotary compressors using fluid-structure interaction. J Mech Sci Technol 33, 5129–5135 (2019). https://doi.org/10.1007/s12206-019-1002-x

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  • DOI: https://doi.org/10.1007/s12206-019-1002-x

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