Search for dissertations about: "in-duct"
Showing result 1 - 5 of 18 swedish dissertations containing the word in-duct.
-
1. Acoustic source characterisation for non-linear in-duct sources
Abstract : Different ways to model acoustic in-duct sources have beenanalysed. Measurements were conducted on two diesel truckengines. It was found that for steady state oscillations, onecould linearise in the neighbourhood of a given linearisationpoint, i.e. READ MORE
-
2. Acoustic In-duct Characterization of Fluid Machines with Applications to Medium Speed IC-engines
Abstract : The unwanted sound, noise, can lead to health problems, e.g. hearing loss and stress-related problems. A pre-knowledge of noise generation by machines is of great importance due to the ever-shorter product development cycles and stricter noise legislation. READ MORE
-
3. Modelling of low frequency sound in duct networks
Abstract : .... READ MORE
-
4. Non-Spherical Particle Interaction in Duct and Jet Flow
Abstract : Wood waste is the most popular biomass recourse for many nations. Burned wood can, direct or indirect, release one of the greenhouse gases, carbon dioxide. The process can still be seen as a renewable source of energy since replanting of the trees and crops are consuming nearly the same amount of carbon dioxide through photosynthesis. READ MORE
-
5. Methods for Modelling and Characterization of In-Duct Sources
Abstract : Methods to characterize acoustic sources in flow ducts have been investigated. In the first part of this thesis a measurement procedure to characterize an air terminal device using an acoustic one-port source model based on the two microphone technique has been tested and validated. READ MORE