Liquid Spray Data from an Optical Medium-Speed Diesel Engine and Its Comparison with CFD

Document Number: 2009-01-2676

Date Published: November 2009

Author(s):
Ossi Kaario - Helsinki University of Technology
Ville Vuorinen - Helsinki University of Technology
Martti Larmi - Helsinki University of Technology
Teemu Sarjovaara - Helsinki University of Technology
Harri Hillamo - Helsinki University of Technology
Aki Tilli - Helsinki University of Technology

Abstract:
Experimental spray tip penetrations obtained from a large-bore medium-speed optical diesel engine were compared to CFD simulations. The optical spray results are unique as they are obtained from a running large-bore (200 mm) diesel engine. The experimental spray tip penetration measurements were obtained during the early spray development period when the spray evaporation had not yet reached the quasi steady-state phase. The CFD simulations were conducted in both static chamber environment and in engine conditions. The fuel injection boundary conditions were obtained from 1-D simulations. Within the error margins associated with the experimental and computational data, relatively good accuracy was obtained between measured and simulated spray tip penetration. It was also observed that it is very important to have accurate fuel injection mass flow rate data. This was observed after a sensitivity analysis was made for the injection duration and fuel mass quantity. In addition, it was observed that the spray shape in the simulations did not fully resemble the experimental spray shapes.

File Size: 1014K
Product Status: In Stock

See other papers presented at SAE 2009 Powertrains Fuels and Lubricants Meeting, November 2009, San Antonio, TX, USA, Session: Multi-Dimensional Modeling

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >