Analiza parametrów rozpylania i parowania paliwa z wtryskiwacza 4-suwowego silnika okrętowego

Analysis of parameters of fuel brake-up and evaporation from marine 4-stroke engine injector

The results of modelling of fuel brake-up using Chu, FIPA and TAB models and fuel evaporation using a Spalding Dukowicz model are presented. Boundary and initial conditions are taken from the experiment consisting of the photographic record of fuel injection under atmospheric pressure. The results of modelling allowed the comparison of the fuel injection. FIPA brake-up model results the smallest average diameter of fuel droplets at the start of the injection process. The Chu brake-up model corresponds to largest mean diameter of fuel droplets. Dukowicz’s model describes the phenomenon of evaporation of fuel in a more intensive at the beginning of fuel injection with respect to the Spalding model. During the next stage of the fuel injection faster evaporation of the fuel can be derived by the Spalding model. The choice of the brake-up and evaporation model of fuel should always be preceded by experimental research.


W pracy przedstawiono wyniki modelowania rozpylania paliwa z zastosowaniem modeli Chu, FIPA i TAB oraz parowania paliwa z zastosowaniem modelu Spaldinga i Dukowicza. Warunki brzegowe i początkowe zostały określone na podstawie eksperymentu, polegającego na zapisie fotograficznym wtrysku paliwa w warunkach ciśnienia atmosferycznego. Uzyskane wyniki modelowania pozwoliły na porównanie parametrów strugi wtryskiwanego paliwa. Zastosowanie modelu rozpylania FIPA ma wpływ na uzyskanie najmniejszej średniej średnicy kropel na początku procesu wtrysku, analogicznie model Chu daje w wyniku największe średnie średnice kropel paliwa. Model Dukowicza opisuje zjawisko parowania paliwa w sposób bardziej intensywny na początku procesu wtrysku paliwa w stosunku do modelu Spaldinga. Podczas dalszego etapu wtrysku paliwa szybsze parowanie paliwa można uzyskać dzięki modelowi Spaldinga. Dobór modelu rozpylania i parowania paliwa powinien więc być zawsze poprzedzony badaniami eksperymentalnymi.

Słowa kluczowe: 
rozpylanie paliwa
parowanie paliwa
model TAB
model Chu
model Dukowicza
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Citation pattern: Kowalski J., Analiza parametrów rozpylania i parowania paliwa z wtryskiwacza 4-suwowego silnika okrętowego, Scientific Journal of Gdynia Maritime University, No. 83, pp. 98-109, 2014

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