Open AccessEffect due to Variation in Bend Angles of Intake Manifold on Turbulent Kinetic Energy for Diesel Engine
Author(s) -
Mansoor A. Haider,
H. M.
Publication year - 2020
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.e2973.039520
Subject(s) - turbulence kinetic energy , turbulence , mechanics , kinetic energy , work (physics) , mixing (physics) , inlet manifold , combustion , diesel engine , cylinder , materials science , fluent , flow (mathematics) , diesel fuel , internal combustion engine , mechanical engineering , computational fluid dynamics , physics , thermodynamics , classical mechanics , automotive engineering , engineering , chemistry , organic chemistry , quantum mechanics
One of the positive results for enhancing turbulence is to improve swirl, which is an important factor of air motion in a diesel engine. Other than enhancing mixing and improvement in combustion processes it also influences heat transfer, combustion quality, and engine raw emissions. To improve swirl intensities in-cylinder parameters like velocity, pressure, temperature and turbulence intensity are to be considered. There are two ways to create a swirl, modification in the intake system and valve design. So this work done contains modifications in the design of manifold to enhance turbulence during the intake stroke. Designs of manifold having different bend angle of 15o, 30o, 45o, 60o and 75o were used, all parts of numerical analysis were carried out on Ansys Fluent. The 200mm long intake model having a 20 mm diameter, with a bend on 160mm along length was used to find out the best bend angle configuration from the above orientations. K-epsilon model was used to simulate flow dynamics; variations turbulent kinetic energy was studied. After analyzing these results it was concluded that best-optimized design (in terms of turbulent kinetic energy) to get better swirl was for 75o. This work gives the understanding to find new techniques for further improvement in mixing by increasing turbulent kinetic energy. This work emphasizes on the techniques to enhance turbulent kinetic energy of any flow, and can also be applied to different fields related to mixing of fluids other than diesel engine.