Total injected mass in 60 degree sector

sanket31594 · July 20, 2017, 06:15

Hello,

My engine geometry is 60 degree sector and nozzle having 6 holes.I have to insert value of TOTAL INJECTED MASS in kg. So I have to insert full mass or 1/6th of full mass?

MFGT · July 20, 2017, 08:50

In your simulation will be only one nozzle, right?
So in this case please specify only the mass injected through this nozzle. e.g. 1/6th of full mass.

For further help regading sector cases i recommend looking at the example cases.

ymao · July 20, 2017, 10:51

Hi Sanket,

I think the following example case could be helpful. (version 2.3)

File>Load example case> Engine sector - Non-premixed combustion (SAGE)

In the Spray Model panel, Under tab of Time/Temp/Mass/Size, you will need to provide Total injected mass which is the mass for this injector. Note: one injector could have multiple nozzles (or holes) which is defined under the tab of Nozzles.

sanket31594 · July 20, 2017, 14:25

Hello sir,
I am confused somewhat.
I have sector of 60 degree and injector having 6 holes. Total amount of diesel injection in one cycle is X kg.

So in Time/temp/mass/size/Total injected mass box should I enter X kg or X/6 kg of fuel?
And i have specified only one nozzle(hole) because 60 degree part have only one hole . Is it right?

ymao · July 20, 2017, 14:41

Quote:

Originally Posted by sanket31594

Hello sir,
I am confused somewhat.
I have sector of 60 degree and injector having 6 holes. Total amount of diesel injection in one cycle is X kg.

So in Time/temp/mass/size/Total injected mass box should I enter X kg or X/6 kg of fuel?
And i have specified only one nozzle(hole) because 60 degree part have only one hole . Is it right?

If I understand correctly, the sector of 60 degree only has 1 nozzle (Full case (360 degree) should have 6 nozzles). If the total amount of diesel injection for full case in one cycle is X (kg).

Then X/6 (kg) is the mass you should enter for the Total injected mass.

sanket31594 · July 20, 2017, 14:49

Quote:

Originally Posted by ymao

If I understand correctly, the sector of 60 degree only has 1 nozzle (Full case (360 degree) should have 6 nozzles). If the total amount of diesel injection for full case in one cycle is X (kg).

Then X/6 (kg) is the mass you should enter for the Total injected mass.

Understood.
Thank you

MFGT · July 21, 2017, 05:26

Just dont be confused by the output, most (or all?) files will consider the sector and give output for the full geometry then.

Check the Manual for information about sector case output

July 20, 2017, 06:15	Total injected mass in 60 degree sector	#1
sanket31594 New Member Sanket Join Date: Jul 2017 Posts: 20 Rep Power: 9	Hello, My engine geometry is 60 degree sector and nozzle having 6 holes.I have to insert value of TOTAL INJECTED MASS in kg. So I have to insert full mass or 1/6th of full mass?

July 20, 2017, 08:50		#2
MFGT Senior Member Tobias Join Date: May 2016 Location: Germany Posts: 295 Rep Power: 11	In your simulation will be only one nozzle, right? So in this case please specify only the mass injected through this nozzle. e.g. 1/6th of full mass. For further help regading sector cases i recommend looking at the example cases. ymao likes this.

July 20, 2017, 10:51		#3
ymao New Member Yijin Mao Join Date: Jun 2017 Location: Convergent Science, Madison WI Posts: 20 Rep Power: 9	Hi Sanket, I think the following example case could be helpful. (version 2.3) File>Load example case> Engine sector - Non-premixed combustion (SAGE) In the Spray Model panel, Under tab of Time/Temp/Mass/Size, you will need to provide Total injected mass which is the mass for this injector. Note: one injector could have multiple nozzles (or holes) which is defined under the tab of Nozzles. __________________ __________________ *Yijin Mao, Ph.D.* Support/Application Engineer CONVERGECFD

July 21, 2017, 05:26		#7
MFGT Senior Member Tobias Join Date: May 2016 Location: Germany Posts: 295 Rep Power: 11	Just dont be confused by the output, most (or all?) files will consider the sector and give output for the full geometry then. Check the Manual for information about sector case output ymao likes this.

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July 20, 2017, 14:25		#4
sanket31594 New Member Sanket Join Date: Jul 2017 Posts: 20 Rep Power: 9	Hello sir, I am confused somewhat. I have sector of 60 degree and injector having 6 holes. Total amount of diesel injection in one cycle is X kg. So in Time/temp/mass/size/Total injected mass box should I enter X kg or X/6 kg of fuel? And i have specified only one nozzle(hole) because 60 degree part have only one hole . Is it right?