If I simulate the solid(density:1500,inlet velocity:2m/s)-water(density:1000,velocity:2m/s) flow in a pipe and at the same temperature, which model is the best? can I apply the £Ë-¦Å model? if so ,should I config it? is the Energy equation necessary in the models?thanks lot .

I have guessed that you mean the K-E Turbulence model.

I had to guess because we only see very strange characters in your message for the model. My guess is that you entered the Greek letters 'Kappa' and 'Epsailon' at your end, but Internet Explorer has translated these as other characters when it gets to our end.

For our version of Internet Explorer, your subject appears as 'Re:the problem of Q model' ,where Q is, in fact, an English pound sign, followed by E, above which are 2 dots, followed by a -, followed by a vertical line, followed by A, above which there is a little circle.

If you just use English characters in future, e.g. K-E, or k-e, then the character problem can hopefully be avoided.

Assuming you mean the K-E Turbulence model, and that you are modelling solid particles in flowing water in a pipe, then we can point you to some relevant information via the CHAM website, at...

http://www.cham.co.uk

- Click on the Home Page, then Encyclopaedia,

then Turbulence, then Multi phase various,

and then Enhancements for Turbulence modulation due

to particles.

- For some similar Library file examples, except

that they are 1-dimensional, click on Home Page,

Short cuts, Input-File Library, Option Libraries,

Advanced multi-phase, IPSA: one-dimensional

validation cases. Then see library files P203,

and P204.

The paths are...

http://www.cham.co.uk/phoenics/d_ear...nplib/p203.htm and http://www.cham.co.uk/phoenics/d_ear...nplib/p204.htm

- For a similar Library file example, except that it is air instead of water, and you probably wish

to use an elliptic rather than a parabolic model,

click on the paths as above, except instead of

clicking on IPSA, click on ' Two-Dimensional

validation cases'.

The path is... http://www.cham.co.uk/phoenics/d_ear...nplib/p219.htm

I hope this helps. Regards, Pete.