Numerical Analysis of Fuel Injector Nozzle Geometry - Influence on Liquid Fuel Contraction Coefficient and Reynolds Number

Kocijel, Lino; Mrzljak, Vedran; Čohodar Husić, Maida; Čekić, Ahmet

doi:10.18048/2019.57.02.

Cited by 2 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cam geometry is not the only thing that affects optimal consumption of the two stroke marine engine, but it is one of significance [1,2]. Comprehensive research also takes into account other parameters, some of which are listed here, which relate to the optimal fuel consumption and reduction of NOx emissions, such as fuel injector nozzle performance [3,4]. The mathematical spray models of the fuel oil injector nozzle parameters and their validation studied in the literature under [5,6], were concluded that implemented models showed very good agreement with the experimental results with respect to their vapor penetration and the spray shape what is related to the NOx emissions.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic System of Fuel Oil Supply to the Electronically Controlled Main Engine

Poljak,

Glavan,

Ribičić

2021

JMTS

View full text Add to dashboard Cite

Hydraulic system of the fuel oil supply to the electronically controlled main engine resolve the problem of the optimized control of the engine which act beneficially to the specific fuel oil consumption and a reduction of the NOx emission. The assumed numerical example is giving insight to the power consumption for the hydraulic control of the fuel oil injection and exhaust valve operation for the two stroke marine engine. The calculated power is higher for the fuel oil pressure booster operation compared to the exhaust valve actuator for about 88%, which is resulted due to the higher operating pressure of the fuel injection to the cylinder, versus lower operating pressure required for the opening of the exhaust valve.

show abstract

Section: Introductionmentioning

confidence: 99%

Hydraulic System of Fuel Oil Supply to the Electronically Controlled Main Engine

Poljak,

Glavan,

Ribičić

2021

JMTS

View full text Add to dashboard Cite

show abstract

Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads

Anđelić

Mrzljak

Lorencin

et al. 2020

JMTS

Self Cite

View full text Add to dashboard Cite

This paper present energy and exergy analysis of the main marine steam turbine, which is used for the commercial LNG (Liquefied Natural Gas) carrier propulsion, at four different loads. Energy analysis is performed by using four different methods. The presented analysis allows distinguishing advantages and disadvantages of all observed energy analysis methods and its comparison to exergy analysis of the same steam turbine. Each analysis is based on the measurement results obtained in main turbine exploitation conditions. Main turbine is composed of two cylinders – High Pressure Cylinder (HPC) and Low Pressure Cylinder (LPC). At low turbine loads, the dominant power producer is HPC, while at middle and high loads the dominant power producer is LPC. Energy analysis Method 1 which is based on the same principles as exergy analysis, should be avoided if the majority of turbine losses are not known. Other observed energy analysis methods can be applied in the analysis of any steam turbine, with a note that increase in ideal (isentropic) steam expansion process divisions will result with an increase in energy losses and with a decrease in energy efficiency. Energy analysis Method 2 which consist of only one ideal (isentropic) steam expansion process, for the whole turbine and at all observed loads, results with the lowest energy losses (in the range between 639.98 kW and 6434.17 kW) as well as with the highest energy efficiency (in a range between 53.70% and 79.40%) in comparison to other applicable energy analysis methods. For the observed loads, whole main turbine exergy destruction is in range from 608.64 kW to 5922.86 kW, while the exergy efficiency range of the whole turbine is between 54.94% and 80.73%. Exergy analysis and all three applicable energy analysis methods show that increase in the main turbine load results with simultaneous increase in turbine losses and efficiencies (both energy and exergy).

show abstract

Numerical Analysis of Fuel Injector Nozzle Geometry - Influence on Liquid Fuel Contraction Coefficient and Reynolds Number

Cited by 2 publications

References 22 publications

Hydraulic System of Fuel Oil Supply to the Electronically Controlled Main Engine

Hydraulic System of Fuel Oil Supply to the Electronically Controlled Main Engine

Comparison of Exergy and Various Energy Analysis Methods for a Main Marine Steam Turbine at Different Loads

Contact Info

Product

Resources

About