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-   -   Looking for assistance in using KIVA (http://www.cfd-online.com/Forums/main/11054-looking-assistance-using-kiva.html)

Phil March 21, 2006 12:51

Looking for assistance in using KIVA
 
I am new to KIVA and appreciate if anyone could provide assistance. We are trying to perform simulations for CI engine. However, ignition did not occur. While I adjusted cf1 in itape5 (increasing it), combustion seems to occur, however, the pressure and heat release are both now too big. Anyone can help me on this?

Thanks a lot.

Tomislav March 22, 2006 07:57

re: Looking for assistance in using KIVA
 
Could be many things. For example too small fuel quantity to notice the effects, or too high tcut or tcute in itape5.

tak March 24, 2006 01:55

re: Looking for assistance in using KIVA
 
hello phil

I am also using kiva for spark ignition engines, and for combsution play with tcut and tcute in itape5

i have one question, for grid generation are you using k3prep (kiva3v rel2 )or some other pre processor code, because i am facing many problems for generating grid with four valve pentroof engine ( i tried to improve the grid density to the 4valve engine example , i am getting inverted cells) can you please suggest me the better way to generate grids using k3prep

ali mottalea March 25, 2006 02:40

re: Looking for assistance in using KIVA
 
if you get inverted cell when running kiva main program or k3prep?


tak March 25, 2006 11:58

re: Looking for assistance in using KIVA
 
I am getting inverted cells (otape 11)during executing k3prep for grid file otape17.

ali mottalea March 26, 2006 10:40

re: Looking for assistance in using KIVA
 
if i have your iprep file i probably could help you.

shahidimran October 30, 2010 14:08

deciding value for 'NBO'
 
i am a beginner with kiva3v.
will you please guide me how can we decide the value of NBO for a block and how to specify i,j..x,y for these values

hope you will reply

mamalili November 3, 2013 04:27

otape
 
hi
i am a beginner of openFOAm
and search for a case for research
can you offer me a link so that i can download an otape of it to convert in openFOAM, please?
tank you very much

kaveh19 August 10, 2015 08:46

kiva
 
hi,
I have some question . would you mind helping me?
1) I want to run the bore*stroke=76*66 in different compression ratio e.g.,12 and 20. How can i create this C.R ?
2) When i run bore*stroke = 86*86 for KivaTest ,it runs until -5 not 60 . what's the reason?
thanks in advance.


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