Numerical investigation on the effect of creating grooves inside the injector nozzle on the diesel and biodiesel engine fuels spray behavior

Document Type : Research Paper

Authors

1 Assistant Professor, Mechanical Engineering Department, Imam Ali university

2 MSc Student, Mechanical Engineering Department, Imam Khomeini International University

Abstract

In this study, spray behavior of diesel and biodiesel fuel in a cylinderical fixed volume combustion chamber for a grooved nozzle hole has been investigated using CFD in order to improving the fuel spray characteristics and diesel engine performance. To this end, microscopic and macroscopic diesel and biodiesel fuel spray characteristics are modeled and investigated using AVL-Fire and Matlab software. Firstly, the liquid fuel flow inside the injector with cylindrical and converged conical nozzle holes have been modeled and then in the following diesel and biodiesel fuels have been used in the grooved nozzle hole.   Numerical results show that in this case, biodiesel spray has smaller penetration length and bigger cone angle and SMD. Thus spray macroscopic and microscopic characteristics can be improved and controlled for different fuels by creating grooves inside the nozzle hole. Numerical results and experimental data was validated from previous researches.

Keywords

References

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Aerospace Knowledge and Technology Journal
Volume 9, Issue 2 - Serial Number 2
October 2020
Pages 65-76

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