The Study Of Flow Visualization On LNT Catalytic Converter Using CFD-Fluent

Goh , Wern Chie (2008) The Study Of Flow Visualization On LNT Catalytic Converter Using CFD-Fluent. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Emission from prime mover had caused inevitable pollutions to the environment. Diesel engine has gained the hearts of many car manufacturers due to its fuel economic characteristic. As the result, the quantity of diesel powered vehicle, are predicted to double in the coming future. However, diesel engine faces a major drawback as it produces huge amount of soot and NOx emission. The LNT converter which promises to provide the most effective NOx reduction in diesel engine, were being studied in this research in terms of the fluid flow across the catalytic converter. Flow visualization simulated by using the CFD FLUENT offers the audience to be able to actually see the pattern of the flow as it crosses from the inlet diffuser and exits through the outlet nozzle of the LNT catalytic converter. The velocity of the flow was proven to be dependent on the cross sectional area of the catalytic converter. The porous medium approach was applied to the monolithic structure in order to simulate the flow as predicted in an actual case, whereby only laminar flow existed along the monolith structure.

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