메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술대회자료
저자정보
Takeo Kajishima (Osaka University) Changhwa Han (Osaka University)
저널정보
한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 2014년도 추계학술대회 논문집
발행연도
2014.11
수록면
1 - 4 (4page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

초록· 키워드

오류제보하기
To development an efficient indirect method for aeroacoustic field, a numerical method for turbulent flows at low Mach number and a sound source model are discussed. The time marching method for the usual incompressible scheme is modified to account for the weak compressibility. A one-equation subgrid scale model (SGS) for the large-eddy simulation (LES) is improved to deal with high Reynolds number flows appropriately. The reproduced turbulent flow around NACA0012 airfoil is in good agreement with experimental data The sound source formulation is derived by rearranging the continuity and Navier-Stokes equations to the wave motion equation. The investigation using LES database of flow around NACA0012 airfoil suggests that the material derivative of the velocity divergence plays a dominant role as a sound source. The distribution of the sources is consistent with of the classical sound source model such as Lighthill or Powell in case of very low fluctuation of density. The sound pressure level predicted based on the above-mentioned LES and newly derived sound source model is in reasonable agreement with experimental data.

목차

Abstract
1. INTRODUCTION
2. NUMERICAL SIMULATION
3. CONCLUSIONS
REFERENCES

참고문헌 (0)

참고문헌 신청

이 논문의 저자 정보

이 논문과 함께 이용한 논문

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-ECN-0101-2016-559-001586402