Imep

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

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

Tell me if it works

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

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:
temperature=320.15K
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 https://support.ansys.com you can find everything

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? https://support.ansys.com 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
https://support.ansys.com/portal/sit...plate.REGISTER

also, if you are not student, apply on
https://support.ansys.com/portal/sit...late.REGISTER/

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

February 5, 2013, 17:07	Imep	#1
wmoore16 New Member William Join Date: Jan 2013 Location: Statesboro,Ga Posts: 6 Rep Power: 13	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.

February 27, 2013, 11:06	Is this any help to answering your question cemilbercin?	#5
wmoore16 New Member William Join Date: Jan 2013 Location: Statesboro,Ga Posts: 6 Rep Power: 13	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: temperature=320.15K 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 hamdireza likes this.

February 28, 2013, 17:19		#8
cemilbercin New Member Join Date: Feb 2013 Posts: 3 Rep Power: 13	thank you very much brother wmoore16 and fluent 87...but how can I enroll or register in this site? https://support.ansys.com 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. wmoore16 likes this.

February 25, 2013, 08:51		#2
fluent87 New Member Cristiano Join Date: Feb 2013 Posts: 11 Rep Power: 13	Hi, i'm not sure, but i Think you can insert this value in "solution inizialization". Tell me if it works

February 25, 2013, 10:31		#3
wmoore16 New Member William Join Date: Jan 2013 Location: Statesboro,Ga Posts: 6 Rep Power: 13	Thanks for your reply. I received done outside help and found that it is a calculated value.

February 25, 2013, 17:11		#4
cemilbercin New Member Join Date: Feb 2013 Posts: 3 Rep Power: 13	wmoote how did you modelled internal combustion engine?would you send me informations in fluent please?

February 27, 2013, 14:06		#6
cemilbercin New Member Join Date: Feb 2013 Posts: 3 Rep Power: 13	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?

February 28, 2013, 05:09		#7
fluent87 New Member Cristiano Join Date: Feb 2013 Posts: 11 Rep Power: 13	On https://support.ansys.com you can find everything

March 1, 2013, 05:56		#9
fluent87 New Member Cristiano Join Date: Feb 2013 Posts: 11 Rep Power: 13	if you are student you can register yourself on https://support.ansys.com/portal/sit...plate.REGISTER also, if you are not student, apply on https://support.ansys.com/portal/sit...late.REGISTER/ Anyway you need the customer code that you can find Ansys License Invoice (yours o your University).