[Hayder Mohammed]

Hello every body
I am trying to model a liquid fuel combustion by fluent ..my problem is when I use the empirical fuel(diesel fuel) to define my fuel in species transport /non-premixed combustion...and use the injection in discrete phase >>>the velocity magnitude resulted too high (multiplied by 1000 or more ) and the velocity vectors are shown too small even when I use a scale more than 100000 !!!
and anther thing ,,,when I used another fuel (not empirical ) the velocity and vectors are shown normal ...!!!!
what are my faults ?
I 'll be so grateful if anyone can help me
please e mail me on my email (hayder_mohammed@rocketmail.com) or put your answer in this forum
thank you