Effects of Duct Geometry, Thickness and Types of Liners on Transmission Loss for Absorptive Silencers
ثبت نشده
چکیده
N Abstract—So alyzed in this hen the rigid d cked absorptiv und waves will encer, usually a veral condition cknesses, and en studied in t en compared encer with app d outlet region hieved by appl pendence of th thicknesses o ss section (con ckness of ab proves. In this sorptive silence ipse, square, a en presented. sorptive mater terials) as line d 30 mm for g ect of substanc istivity and de cknesses of the cross section o
منابع مشابه
Performance of Absorptive Material Liners on Noise Transmission Loss in Mufflers used by Goods Carrying Tricycles
Due to increase in the number of goods carrying tricycles, the amount of noise and pollution on our roads has increased. To optimize the control of the engine noise emission for tricycle, different absorptive material liners have been introduced into muffler design. In this study, the performance of Aerogel, Ceramic, Kenaf fibre, Polyester and Rockwool as absorptive material liners on the trans...
متن کاملModelling and Optimization of Toroidal Continuously Variable Transmission in ECE Driving Cycle
In the present study, the aim is to optimize full and half toroidal continuously variable transmission (CVT) in order to minimize the vehicle fuel consumption (FC) in ECE driving cycle. First, the model of both CVTs’ efficiency is presented. The control strategy of CVTs speed ratio based on minimizing the vehicle FC is introduced, and the algorithm of calculating the vehicle FC is shown. Afterw...
متن کاملOptimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle
In this paper, optimization of the sound transmission loss of finite rectangular anisotropic laminated composite plate with simply supported boundary conditions has been developed to maximize transmission loss. Appropriate constraints were imposed to prevent the occurrence of softening effect due to optimization. For this purpose, optimization process was incorporated into comprehensive finite ...
متن کامل3D Simulation of the Effects of the Plasma Actuator on the Unsteady, Turbulent and Developing Flow within a Circular Duct
The objective of current paper is 3D simulation of turbulent, developing flow and unsteady within a circular duct in presence of the body force vector persuaded by Dielectric barrier discharge (DBD) plasma actuator inside the surface of geometry for the first time. This article aims at investigating of applying plasma actuator to control separation with special arrangement of electrodes. For th...
متن کاملEvaluation of the Effect of Household Cleansers on the Color Change of Two Types of Permanent Soft Liners: An In Vitro Study
Many patients use household cleaners to clean denture which can cause discoloration and damage soft liners. The purpose of this study was to evaluate the effect of household cleansers on the color change of two types of permanent soft liners. Methods: In this interventional study, 80 permanent silicone soft liners, including 40 heat-cured liners (Molloplast-B, Detax Gmbh & Co. ...
متن کامل