Selection and Structure Optimization of the Exhaust Muffler of Cruise Ship's Chimney
Aiming at the requirements of acoustic performance and aerodynamic performance of the exhaust muffler when the main engine of a cruise ship is operating normally,the acoustic field and flow field characteristics of the exhaust muffler of a cer-tain cruise ship chimney were analyzed based on the characteristics of the exhaust noise source of the main engine.The results of comparing several schemes showed that only changing the size and number of holes has little effect on the acoustic performance of the muffler when the porosity of the cannula in the muffler remains unchanged;reducing the aperture size and increasing the num-ber of apertures can effectively improve the flow field performance of muffler,so as to ensure the economy and power of the nor-mal operation of the main engine.
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