How to read IC Engine cylinder pressure

mslu544 · April 16, 2009, 12:22

Dear Sir,

I am trying to read cylinder pressure of an IC Engine, I could model the combustion chamber and run the case in FLUENT, but i could not read cylinder pressure. Some body please help me which option i should use to read this.

m. sreenivasulu

doki · April 18, 2009, 01:35

you can use volume integrals (in report menu) to integrate the pressure inside the cylinder and get the values.
also if you are willing to get the calculated value for different crank angles, you can set the same settings in the define/animation before running the case.

yash · April 19, 2009, 08:19

Hi,

I am new to FLUENT and i m trying to run the ICE cold flow simulation tutorial given by FLUENT. I followed all the steps given but still I am getting error after I apply the initial conditions:

WARNING: Unassigned interface zone detected for interface 21
WARNING: Unassigned interface zone detected for interface 26
Error: Init_Flow: unassigned interface_zones
Error Object: ()

What could be the possible problem is it with the mesh or case set up?
I assigned all the zone as per the tutorial.

Please help me with this.

Thanks,
Yashodeep

mslu544 · May 19, 2009, 10:19

[QUOTE=yash;213425]Hi,

I am new to FLUENT and i m trying to run the ICE cold flow simulation tutorial given by FLUENT. I followed all the steps given but still I am getting error after I apply the initial conditions:

WARNING: Unassigned interface zone detected for interface 21
WARNING: Unassigned interface zone detected for interface 26
Error: Init_Flow: unassigned interface_zones
Error Object: ()

What could be the possible problem is it with the mesh or case set up?
I assigned all the zone as per the tutorial.

Please help me with this.
I have seen ur message today
initialization problem- it might be at interface_zones
if u can send the soft copy (pdf) i can suggest u.
sreenivasulu

yash · May 19, 2009, 17:49

thanx i was able to fix it.. there was problem with the boundary conditions

April 16, 2009, 12:22	How to read IC Engine cylinder pressure	#1
mslu544 New Member sreenivasulu Join Date: Apr 2009 Posts: 4 Rep Power: 17	Dear Sir, I am trying to read cylinder pressure of an IC Engine, I could model the combustion chamber and run the case in FLUENT, but i could not read cylinder pressure. Some body please help me which option i should use to read this. m. sreenivasulu Last edited by mslu544; April 18, 2009 at 00:50.

April 19, 2009, 08:19	ICE simulation from the FLUENT tutorial	#3
yash New Member Yashodeep Join Date: Apr 2009 Posts: 4 Rep Power: 17	Hi, I am new to FLUENT and i m trying to run the ICE cold flow simulation tutorial given by FLUENT. I followed all the steps given but still I am getting error after I apply the initial conditions: WARNING: Unassigned interface zone detected for interface 21 WARNING: Unassigned interface zone detected for interface 26 Error: Init_Flow: unassigned interface_zones Error Object: () What could be the possible problem is it with the mesh or case set up? I assigned all the zone as per the tutorial. Please help me with this. Thanks, Yashodeep

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April 18, 2009, 01:35		#2
doki Member Join Date: Apr 2009 Posts: 41 Rep Power: 17	you can use volume integrals (in report menu) to integrate the pressure inside the cylinder and get the values. also if you are willing to get the calculated value for different crank angles, you can set the same settings in the define/animation before running the case.

May 19, 2009, 10:19		#4
mslu544 New Member sreenivasulu Join Date: Apr 2009 Posts: 4 Rep Power: 17	[QUOTE=yash;213425]Hi, I am new to FLUENT and i m trying to run the ICE cold flow simulation tutorial given by FLUENT. I followed all the steps given but still I am getting error after I apply the initial conditions: WARNING: Unassigned interface zone detected for interface 21 WARNING: Unassigned interface zone detected for interface 26 Error: Init_Flow: unassigned interface_zones Error Object: () What could be the possible problem is it with the mesh or case set up? I assigned all the zone as per the tutorial. Please help me with this. I have seen ur message today initialization problem- it might be at interface_zones if u can send the soft copy (pdf) i can suggest u. sreenivasulu

May 19, 2009, 17:49		#5
yash New Member Yashodeep Join Date: Apr 2009 Posts: 4 Rep Power: 17	thanx i was able to fix it.. there was problem with the boundary conditions