冲孔管型消音器在限制空间下的元件最佳化设计OptimalElement.PDF

Optimal Element Design on Perforated Tube Silencers under Space Constraints NSC 95 - 2218- E - 235 - 002 mcchiu@dragon.ccut.edu.tw ycchang@ttu.edu.tw I. : ;; ― 塞;流;流 塞流 ;數; 度 ; 流 ( ;; ; 1~4 )― 立 類理論(理論) I. ABSTRACT This Project, a fundamental 數 research on one-chamber perforated mufflers, including four types of resonator, plug, cross-flow, and reverse-flow, is trying to build up the 理論 theoretical four-pole matrices and to ()理論 流 maximize the acoustic performance in 流 space-constrained muffler by using (Four-Pole Transfer Matrix Method) genetic algorithm (GA) and simulated 理論量 數 annealing (SA). 理論 Considering the flowing effect, the 行 理論 four-pole matrix under the plane-wave 理論 assumption is derived. To confirm the liability of the mathematical model, one set of design data is taken into the 精 mathematical model and compared wit