Numerical investigation on reduction of valve flow noise in high pressure gas pipe using perforated plates

G Kim, G Ku, C Cheong, W Kang… - The Journal of the …, 2021 - koreascience.kr
In this study, a numerical methodology is proposed for evaluating valve flow noise in a pipe
conveying high pressure gas, and the effects of perforated plates on reduction of such valve …

Numerical investigation on the flow noise reduction due to curved pipe based on wavenumber-frequency analysis in pressure relief valve pipe system

K Garam, C Cheolung - The Journal of the Acoustical Society of …, 2022 - koreascience.kr
A sudden pressure drop caused by the pressure relief valve acts as a strong noise source
and propagates the compressible pressure fluctuation along the pipe wall, which becomes a …

Development of flow-vibroacoustic coupled numerical methods for prediction of noise radiation due to flow-born vibration of compressor discharge piping system

S Lee, C Cheong, J Park - INTER-NOISE and NOISE-CON …, 2023 - ingentaconnect.com
The compressor and fan in air conditioner outdoor unit are the core component which deter-
mines noise performance as well as cooling or heating performance. Among these, the com …

Evaluating the effects of cavitating refrigerant flow on noise radiation from electronic expansion valve: a numerical study

S Lee, C Cheong, B Lee, S Park - INTER-NOISE and NOISE …, 2023 - ingentaconnect.com
The electronic expansion valve (EEV) is a critical component in air conditioners, responsible
for regulating refrigerant flow rate and controlling the cooling or heating performance …

[PDF][PDF] 에어컨실외기압축기배기배관계의기기기인진동/유동기인진동의방사소음에대한상대적기여도분석

동 - 한국음향학회지제, 2024 - koreascience.kr
에어컨 실외기 내부의 압축기 진동 소음은 실외기에서 발생하는 소음의 주 원인으로 인식되고
있었다. 하지만, 압축기의 작동 속도가 증가함에 따라 압축기에 연결된 배관계에서의 냉매 유동 …

[PDF][PDF] 배관의유동유발진동및음향유발진동기인광대역방사소음예측을위한수치해석기법개발

이상헌, 정철웅, 이송준 - 한국음향학회지제, 2024 - koreascience.kr
배관시스템은 유체를 장거리로 이송시키는 장비로서 많은 산업군에서 사용되고 있다. 고압의
배관에서는빠른 유속으로 인하여 소음이 크게 발생하고 있으며, 이러한 소음을 저감 시키기 …

[PDF][PDF] 다공판을이용한고압가스배관내밸브유동소음저감에대한수치적고찰

김규남, 구가람, 정철웅, 강웅, 김극수 - 한국음향학회지제, 2021 - academia.edu
본 논문에서는 고압가스 배관의 밸브 유동소음을 평가할 수 있는 수치적 방법론을 제시하고
밸브 유동소음저감을 위한 다공판의 영향을 정량적으로 분석하였다. 먼저, 고정확도의 비정상 …

[引用][C] Analysis of relative contribution of machinery-induced vibration/flow-induced vibration to noise radiation from compressor discharging piping system in air …

S Lee, C Cheong, J Park, J Lee - The Journal of …, 2024 - The Acoustical Society Of Korea

[引用][C] Development of numerical method to predict broadband radiation noise resulting in fluid-induced vibration and acoustic-induced vibration of pipe

S Lee, C Cheong, S Lee - The Journal of …, 2024 - The Acoustical Society Of Korea