molecular properties
 

I tried to have the water density changing with both temperature and pressure, and so took the user database values. However, it says "insufficient dimmension for the molecular viscosity array". I solved the problem NCMAXV into NCMAX and all the others datas to be able to run the analysis. However, after I did it, the ouput given in a transient mode is absolutely wrong!! The density of water remains constant and equal to 1.2kg/m3 !!! What can I do? Is the user database wrong? It however looks right when we edit it!! Thank you in advance in you have a hint. Yann

Re: molecular properties
 

Just a guess: Have you changed the cell material after defining a new material? Do you use liquid water or water vapour? How do you calculate the density?

Re: molecular properties
 

Dear Mork, that is effectively the first question to as, but yes, the cells are defined as liquid, and I am using liquid water. I am using the option: select material from database, then water(l), and then I tried to use "use internal properties calculation" which tells that the dimension array for viscosity is insufficient. What can I do? Create my own database? I also tried to use isobaric properties, defining the datum pressure as 997kg/m3, but the density doens't vary neither. Regards, Yann

Re: molecular properties
 

When you have changed your set up, do you re-write the .geom file (to get a new parm.inc) and re-write the .prob file?

molecular properties
 

Thanks Richard,but yes I did rewrote both of them. Redards, Yann

Re: molecular properties
 

Are you using VOF? In that case you can only have constant densities for both fluids.

Re: molecular properties
 

Dear all, I resigned from my first idea to have the internal value for the water density. These value seem to be wrong...? I simply used the isobaric density for the water which is however less far convinient for the model I have to make. Anyway, thank you all for you help, and if ever someone knows the clue... Yann