Scientia Iranica

Scientia Iranica

N-Junction Modeling in Perforate Silencers for Internal Combustion Engines

Authors
1 Khorasan Science and Technology Park Technologic Research Institute, P. O. Box: 91735-139, Mashad, Iran
2 Department of Mechanical Engineering,Ferdowsi University of Mashhad
3 Department of Energetics,Politecnico di Milano
Abstract
In this work, boundary conditions of the T-junctions in engine silencers are modeled by the Constant Pressure Model (CPM) and the Pressure Loss Model (PLM). Initially, the mean flow velocity through the ducts is assumed to be zero. Two Benson CPM and Corberan CPM approaches are employed in perforate silencers simulation. For the silencer with more than one perforated pipe, in which N-branch junctions are formed, it is possible to apply the Benson CPM approach. Finally, when the mean flow velocity through the ducts is non-zero, the shortcoming of the CPM model and the ability of the PLM model in describing the T-junctions are shown."

Volume 12, Issue 4 - Serial Number 4
Transactions on Civil Engineering (A)
Autumn 2005

  • Receive Date 25 April 2006
  • Revise Date 31 December 2022
  • Accept Date 30 December 2005