Abstract
It is necessary to analyze the intake/exhaust gas flow of a diesel engine when turbocharger matching and when installing emission control devices such as exhaust gas recirculation (EGR), selective catalytic reduction (SCR), and scrubbers. Analyzing the intake/exhaust gas flow using a 3D approach can use various analytical models, but it requires a significant amount of time to perform the computation. An approach that combines 1D and 3D is a fast numerical analysis method that can utilize the analysis models of the 3D approach and obtain accurate calculation results. In this study, the flow characteristics of the exhaust gas were analyzed using a 1D–3D coupling algorithm to analyze the unsteady gas flow of a diesel engine, and whether the 1D–3D approach was suitable for analyzing exhaust systems was evaluated. The accuracy of the numerical analysis results was verified by comparison with the experimental results, and the flow characteristics of various shapes of the exhaust system of a diesel engine could be analyzed. Numerical analysis using the 1D–3D approach was able to be computed about 300 times faster than the 3D approach, and it was a method that could be used for research focused on the exhaust system. In addition, since it could quickly and accurately calculate intake/exhaust gas flow, it was expected to be used as a numerical analysis method suitable for analyzing the interaction of diesel engines with emission control devices and turbochargers.
Highlights
It is necessary to analyze the intake/exhaust gas flow of a diesel engine when turbocharger matching and when installing emission control devices such as exhaust gas recirculation (EGR), selective catalytic reduction (SCR), and scrubbers
The exhaust pipe was a straight pipe, gas was discharged into the atmosphere end, and the results of the 1D–3D approach numerical analysis in the straight pipe were from the end, and the results of the 1D–3D approach numerical analysis in the straight compared to the experimental results
The flow characteristics according to the shape change of the exhaust system were analyzed, and the results of comparing the computation time were summarized as follows
Summary
Modeling for ofof thethe gasgas flow in ain diesel engine usingusing the 1D–3D approach. The result of numerical analysis of the gas flow was able to the pressure andresults velocity results analyzed in the. Approach, pressing the pressure and velocity results analyzed in the 3D zone as contours the dynamic mesh could be used to simulate the movement of the piston and valves, If the cylinder and intake/exhaust valves are numerically analyzed in a 3D approach, which is a computationally time-consuming technique [19]. F_CENTROID seat of the intake/exhaust valve passed circularly around the valve, the F_CENTROID functions functionsof ofthe theUDFs. In orderto to numerically numericallyanalyze analyzethe theinteraction interactionofofintake/exhaust intake/exhaust gas flow with exhaust system of a diesel engine, it was necessary to calculate the entire crank angle, not exhaust system of a diesel engine, it was necessary to calculate the entire crank angle, not just time steps, and thethe justaafew fewmoments.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
