Development of formulation Q1As method for quadrupole noise prediction around a submerged cylinder

International Journal of Naval Architecture and Ocean Engineering

Han-Shin Seol¹  Jee-Hun Song²  Hyun-Wung Kwon³  Suk-Yoon Hong⁴  Yo-Seb Choi⁴  Woen-Sug Choi⁴  Chul-Min Jung⁵ 

[1] Advanced Ship Research Division, Korea Research Institute of Ships and Ocean Engineering, Daejeon, Republic of Korea;Department of Naval Architecture and Ocean Engineering, Chonnam National University, Yeosu, Republic of Korea;Department of Naval Architecture and Ocean Engineering, Koje College, Koje, Republic of Korea;Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, Republic of Korea;The 6th R&D Institute-3rd Directorate, Agency for Defense Development, Changwon, Republic of Korea;

关键词: Quadrupole noise;    Circular cylinder;    Acoustic analogy;    Formulation Q1As method;    OpenFOAM;   

DOI  :  10.1016/j.ijnaoe.2017.02.002

来源: DOAJ

【 摘 要 】

Recent research has shown that quadrupole noise has a significant influence on the overall characteristics of flow-induced noise and on the performance of underwater appendages such as sonar domes. However, advanced research generally uses the Ffowcs Williams–Hawkings analogy without considering the quadrupole source to reduce computational cost. In this study, flow-induced noise is predicted by using an LES turbulence model and a developed formulation, called the formulation Q1As method to properly take into account the quadrupole source. The noise around a circular cylinder in an underwater environment is examined for two cases with different velocities. The results from the method are compared to those obtained from the experiments and the permeable FW–H method. The results are in good agreement with the experimental data, with a difference of less than 1 dB, which indicates that the formulation Q1As method is suitable for use in predicting quadrupole noise around underwater appendages.

【 授权许可】

Unknown