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wmoore16 February 5, 2013 17:07

I am modeling combustion in a heavy duty diesel engine with some set parameters to include in the setup. Where would I implement IMEP (indicated mean effective pressure) in the simulation setup? I have a value of 3.9 bars to set.

fluent87 February 25, 2013 08:51

i'm not sure, but i Think you can insert this value in "solution inizialization".

Tell me if it works :D

wmoore16 February 25, 2013 10:31

Thanks for your reply. I received done outside help and found that it is a calculated value.

cemilbercin February 25, 2013 17:11

wmoote how did you modelled internal combustion engine?would you send me informations in fluent please?

wmoore16 February 27, 2013 11:06

Is this any help to answering your question cemilbercin?
Crank Shaft Speed(rpm): 1200
Starting Crank Angle: 195 (i.e. 165 degree before top dead center, which is set at 360)
Crank Period (deg): 360
Crank Angle Step Size (deg): 0.2
Piston Stroke(m): 0.1524
Connecting Rod Length(m): 0.3048

Injector position:

x: -1.5e-3 m
radius: 1.5e-3 m

Injection angle: 152 degree

start of injection: 5 degree before top dead center
during of injection: 10 degree
mass of injection: 7.65e-6 kg
temperature: 368 K
cone angle: 7.5 degree
mean droplet diameter: 1.96e-4 m
injection velocity: 200 m/s

Initial conditions:
pressure: 1.92e5Pa - 101325pa (to get gauge pressure)
oxygen (O2) mass fraction: 0.233

Boundary conditions:
Piston temperature: 500 K
Cylinder wall temperature: 420 K
Cylinder head temperature: 470 K

cemilbercin February 27, 2013 14:06

thank you very much brother...are you student or engineer?ı have to improve my fluent ability so would you send me any fluent applications with picture or training videos?

fluent87 February 28, 2013 05:09

On you can find everything :D

cemilbercin February 28, 2013 17:19

thank you very much brother wmoore16 and fluent 87...but how can I enroll or register in this site? ı can not go in this forums...could you help me please?
ı should find fluent applications for booting my knowledges.thank you for yours all help.

fluent87 March 1, 2013 05:56

if you are student you can register yourself on

also, if you are not student, apply on

Anyway you need the customer code that you can find Ansys License Invoice (yours o your University). :)

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