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Forum: STAR-CD

September 2, 2016, 10:07

Replies: 17

How to define spark plug for combustion

Views: 3,385

Posted By Bücherknopf

The initial coordinate system is in the middle,...

The initial coordinate system is in the middle, so I think if I choose the (0/0/0) point it should be fine.

I dont use es-ice, because I only have a pre-chamber where I want to look at the...

Forum: STAR-CD

September 2, 2016, 09:47

Replies: 17

How to define spark plug for combustion

Views: 3,385

Posted By Bücherknopf

Yes you are right. But it shouldnt matter that...

Yes you are right. But it shouldnt matter that much because it is still in the range where it should burn.

But in my simulation I dont have even an ignition. So I dont think, that the problem is...

Forum: STAR-CD

September 2, 2016, 09:29

Replies: 17

How to define spark plug for combustion

Views: 3,385

Posted By Bücherknopf

My concentrations are mass fractions. Why do...

My concentrations are mass fractions.
Why do you think that 5%(mass.)-CH4 arent lamba=1?
And what do you mean that I missmatch the O2 mass fraction? (air consists of ca 23.3% O2 and 76.7% N2 ,...

Forum: STAR-CD

September 2, 2016, 06:12

Replies: 17

How to define spark plug for combustion

Views: 3,385

Posted By Bücherknopf

hello guys can somone of you explain to me...

hello guys

can somone of you explain to me what I am doing wrong?

I have an easy simulation without any boundaries. Its only a chamber with 5%-CH4(lambda=1) 21%-O2 and the rest is N2.
The...

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