جستجوی مقالات مرتبط با کلیدواژه "سوراخ نازل انژکتور" در نشریات گروه "مکانیک"

In this study, the 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 the biodiesel fuel spray characteristics are modeled and investigated using AVL- Fire and Matlab soft ware. 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, the 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 the grooves inside the nozzle hole.Numerical results and experimental data was validated in previous researches.