centricity index, uniformity index

LeonardLapis · April 8, 2009, 10:49

Hi!

I am looking for some information about centricity, uniformity index. I need the exact definition and from which equation can they be derived.
If there is a website where I can find more about this topic, please tell me!

Thanks a lot,
Leonard

ngrube · April 8, 2009, 15:08

Can you give more info about what you are talking about? There are diagnostic quantities from WENO shock-capturing methods called centrality index and nonlinearity index. Are you talking about these indexes or something similar? Or something totally different?

LeonardLapis · April 19, 2009, 17:34

These expressions are used by analyzing a catalytic converter. I hope someone knows more about them.

Maddin · May 14, 2009, 09:44

In two SAE papers you find information about the UI for this.
I don't have them, but I need them.
We can make a deal

I tell you the SAE Number and you send me a copy

Regards, Maddin

tushar.apatil · July 17, 2015, 06:57

view the image for unif ind formula

SJSW · August 27, 2015, 00:46

Could you tell me why the denominator of Uniformity Index is multiplied by 2?

April 8, 2009, 10:49	centricity index, uniformity index	#1
LeonardLapis New Member Leonard Lapis Join Date: Apr 2009 Posts: 2 Rep Power: 0	Hi! I am looking for some information about centricity, uniformity index. I need the exact definition and from which equation can they be derived. If there is a website where I can find more about this topic, please tell me! Thanks a lot, Leonard

April 8, 2009, 15:08	More info	#2
ngrube New Member Nathan Grube Join Date: Mar 2009 Posts: 14 Rep Power: 17	Can you give more info about what you are talking about? There are diagnostic quantities from WENO shock-capturing methods called centrality index and nonlinearity index. Are you talking about these indexes or something similar? Or something totally different?

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April 19, 2009, 17:34		#3
LeonardLapis New Member Leonard Lapis Join Date: Apr 2009 Posts: 2 Rep Power: 0	These expressions are used by analyzing a catalytic converter. I hope someone knows more about them.

May 14, 2009, 09:44		#4
Maddin Senior Member Join Date: Mar 2009 Posts: 260 Rep Power: 18	In two SAE papers you find information about the UI for this. I don't have them, but I need them. We can make a deal I tell you the SAE Number and you send me a copy Regards, Maddin

August 27, 2015, 00:46		#6
SJSW Senior Member Join Date: Jun 2014 Location: Taiwan Posts: 100 Rep Power: 12	Could you tell me why the denominator of Uniformity Index is multiplied by 2?