Analysis of the Sound Field Characteristics of a Muffler at Different Flow Conditions
- سال انتشار: 1402
- محل انتشار: دوماهنامه مکانیک سیالات کاربردی، دوره: 16، شماره: 1
- کد COI اختصاصی: JR_JAFM-16-1_012
- زبان مقاله: انگلیسی
- تعداد مشاهده: 286
نویسندگان
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang ۲۱۲۰۱۳, China
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang ۲۱۲۰۱۳, China
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang ۲۱۲۰۱۳, China
۱ Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang ۲۱۲۰۱۳, China China
Wuhan Second Ship Design and Research Institute, Wuhan,۴۳۰۰۶۰, China
چکیده
To reduce the noise in a pump piping system and increase the usage time of equipment, a new type of porous muffler is proposed in this paper. A water guide cone is incorporated into the muffler structure, which may help to redirect the fluid media in the piping system. The porous structure is adapted from a muffler shell, water cone wall and round bottom plate. According to this structure, the muffler sample is made, and a pump pipeline system test bench is set up. The outlet noise of the pump pipeline system is measured after installing the muffler. At the same time, the muffler is numerically simulated by combining computational fluid mechanics and Lighthill acoustic theory. The characteristics of the flow field and external sound field under three different flow conditions of ۲۰۰ m۳/h, ۴۰۰ m۳/h and ۶۰۰ m۳/h are assessed. The numerical simulation results show the same dominant frequency and trend as the experimental results. The rationality of the numerical simulation is verified. Research shows that: the level of sound pressure at the muffler's outlet is lower than at the inlet, causing muffling, and the characteristics of a quadrupole sound source appear at the outlet. The proposed muffler has a certain effect in reducing noise in the pump pipeline system.کلیدواژه ها
Muffler, Pump piping system, Computational fluid dynamics, Hydrodynamic noise, Sound pressure level, Sound pressure level directivityاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.