HCCI simulation in converge

anirudh1 · September 27, 2020, 15:29

Hello ,
Iam trying to simulate diesel+naturalgas combustion in HCCI mode. I used reaction mechanism taken from converge example case of duel fuel(diesel+ methane). Iam injecting diesel in one pulse(80 deg before tdc)and intake temperature of air and natural gas is 350k. But combustion is not happening in simulation. In experiment combustion is happening with same values.
Can I use that reaction mechanism of dual fuel for HCCI? Is this the problem ?
Kindly help.

LeoBlunt · September 28, 2020, 04:05

You should find a reaction mechanism of HCCI。
Mechanisms in the example cases are not for HCCI.

anirudh1 · September 28, 2020, 04:18

is there any site where i can find reaction mechanism for hcci.

crajath · September 30, 2020, 14:01

Hello Anirudh

There may be several reasons why you do not observe ignition. Can you please send your case setup to support@convergecfd.com (US); supportEU@convergecfd.com (EU) or support.in@convergecfd.com (India)? We will be happy to take a look and help you

Thanks

anirudh1 · October 1, 2020, 02:42

thank you for your reply.
I have sent my case setup to support.in@convergecfd.com email id.
Kindly help me with the issue.

September 27, 2020, 15:29	HCCI simulation in converge	#1
anirudh1 New Member Anirudh Join Date: Sep 2020 Posts: 10 Rep Power: 6	Hello , Iam trying to simulate diesel+naturalgas combustion in HCCI mode. I used reaction mechanism taken from converge example case of duel fuel(diesel+ methane). Iam injecting diesel in one pulse(80 deg before tdc)and intake temperature of air and natural gas is 350k. But combustion is not happening in simulation. In experiment combustion is happening with same values. Can I use that reaction mechanism of dual fuel for HCCI? Is this the problem ? Kindly help. Last edited by anirudh1; September 28, 2020 at 04:04.

September 30, 2020, 14:01		#4
crajath New Member Chinmaya Rajath Join Date: Sep 2020 Posts: 17 Rep Power: 6	Hello Anirudh There may be several reasons why you do not observe ignition. Can you please send your case setup to support@convergecfd.com (US); supportEU@convergecfd.com (EU) or support.in@convergecfd.com (India)? We will be happy to take a look and help you Thanks __________________ Chinmaya Rajath Research Engineer, Applications Convergent Science

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September 28, 2020, 04:05		#2
LeoBlunt New Member Hao Liu Join Date: Sep 2020 Posts: 6 Rep Power: 6	You should find a reaction mechanism of HCCI。 Mechanisms in the example cases are not for HCCI.

September 28, 2020, 04:18		#3
anirudh1 New Member Anirudh Join Date: Sep 2020 Posts: 10 Rep Power: 6	is there any site where i can find reaction mechanism for hcci.

October 1, 2020, 02:42		#5
anirudh1 New Member Anirudh Join Date: Sep 2020 Posts: 10 Rep Power: 6	thank you for your reply. I have sent my case setup to support.in@convergecfd.com email id. Kindly help me with the issue.