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http://dx.doi.org/10.7467/KSAE.2013.21.5.059

A Numerical Study on the Flow Characteristics in the Catalytic Muffler with Different Inlet and Outlet Configurations  

An, Tae Hyun (Department of Aerospace Engineering, Chonbuk National University)
Lee, Seung Yeop (Department of Aerospace Engineering, Chonbuk National University)
Park, Yun Beom (Department of Automotive Engineering, Jeju College of Technology)
Kim, Man Young (Department of Aerospace Engineering, Chonbuk National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.21, no.5, 2013 , pp. 59-66 More about this Journal
Abstract
Lack of the space in many diesel vehicles make it difficult to design and install the catalytic muffler to reduce emissions. For this reason, inlet part of the catalytic muffler is made of L-type which has lower flow uniformity than conventional I-type, and catalytic muffler has complex internal structure by various insertions, which affect the flow uniformity and pressure drop of the systems. In this work, the flow characteristics such as flow uniformity and pressure drop have been numerically investigated by changing such various geometries as inlet shape, porosity, and outlet shape inside the muffler with the three-dimensional turbulent incompressible flow solver. Total 4 different cases are considered in order to find optimal configurations of the catalytic muffler in view of high flow uniformity and low pressure drop. The results show that Case 2 which has no induction cone and outlet perforated pipe has higher uniformity index and lower pressure drop than others considered in this work.
Keywords
Catalytic muffler; Perforated pipe; Flow uniformity; Pressure drop; Porosity;
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Times Cited By KSCI : 4  (Citation Analysis)
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