Sökning: "Tamer Elnady"

Hittade 3 avhandlingar innehållade orden Tamer Elnady.

1. 1. On the use of liners to reduce aircraft jet engine noise

   Författare :Tamer Elnady; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Modelling and Characterization of Perforates in Lined Ducts and Mufflers

   Författare :Tamer Elnady; KTH; []
   Nyckelord :Perforates; Liners; Acoustic impedance; Hot stream liners; Hard splices; Mufflers; Lined ducts; Collocation; Flow duct.;

   Sammanfattning : Increased national and international travel over the lastdecades has caused an increase in the global number ofpassengers using different means of transportation. Greateffort is being directed to improving the noisy environment inthe residential community. LÄS MER

4. 3. Innovative noise control in ducts

   Författare :Maaz Farooqui; Mats Åbom; Hans Bodén; Tamer Elnady; Jeong-Guon Ih; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Locally resonant materials; slow sound; acoustic impedance; metallic foam; low frequency noise; mufflers; lined ducts; grazing flow; flow duct; impedance eduction.; Vehicle and Maritime Engineering; Farkostteknik;

   Sammanfattning : The objective of this doctoral thesis is to study three different innovative noise control techniques in ducts namely: acoustic metamaterials, porous absorbers and microperforates. There has been a lot of research done on all these three topics in the context of duct acoustics. LÄS MER