[skylent]

Dear all,
I want to calculate the liquid film in gasoline direct injection engine.
However, I met a strange problem.
When I use sTAR-CD 4.16 to do it, the liquid film can be generated normally.
But when I use STAR-CD 4.18, the liquid film thickness and mass is always zero.

Did anyone here meet this problem and help me?
Thanks in advanece.

[wernsen]

I had the same problem while playing with the wall film tutorial. I figured out that turining on the "droplet to film transition" in liquid films->film controls fixed that.

have a try
Martin

[skylent]

Thanks Martin,I got it!

Originally Posted by wernsen

I had the same problem while playing with the wall film tutorial. I figured out that turining on the "droplet to film transition" in liquid films->film controls fixed that.

have a try
Martin

[wernsen]

was this the problem?

[skylent]

I also tried in STAR-CD 4.16, the results almost the same no liquid film.
The support in CD-adapco told me that the wall temperature I set is higher than the boiling point of gasoline. So I should increase the Bs coefficient(default 1.0,Bai model) to a larger value such as 1.5.

Originally Posted by wernsen

was this the problem?