Diesel injection problem
 

Hi all,

i want to ask you for an advice for my problem with direct injection.
I have problem with setting injection. In fact i have injector with five nozzles with diameters 0.36 mm. Flow rate through one nozzle is 0.004 kg/s. Injection time is about 0,002758 s. Required value of injected fuel in chamber is approximately 2,535e-5 kg. I simulate for each nozzle new injection with different direction. My problem is that after injection when i click on reports - summary - all injections (5) i get a summary for injections and there total mass.
And this mass is about one order smaller as i need. I used this parameters:
injection type-solid-cone, number of particle streams-i dont know how many, because o dont know what does it mean, particle type-droplet, material - n-heptan. X,Y,Z positon-clear, diameter -??(0,36)??, temp-320K, start CA-336, stop CA-358, X,Y,Z axis-clear, velocity magnitude -???, cone angle - 5, radius - ??, total flow rate - 0,004.

For any advice thank you.
Jurek
juraj.saniga@yahoo.com

Hi Jurek!

I'm also facing the same problem. I can't figure out these parameteres, although i've gone through on Fluent User's Guide.

If someone has any advice, it will be appreciated.

Regards, Adam

Is somene still interested in diesel injection ??

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