Re EngMod2T question on ducts and entry areas.
Depends upon the geometry of the duct in the case and that of the cylinder where the duct begins at the bore edge.
In many designs the inner wall is very short ( above the gasket plane ), and the case extension of the duct outer wall drops away very sharply - with the floor being miles away from the gasket plane.
In this case I would use the area/length at an angle from the bore edge out to just below the gasket plane.
Some engines have a longer inner wall, and also have the case floor close to the gasket surface.
In this design the duct really does "go around the corner" into the case and the ( vertical ) window forms the entry area, as shown in the help files.
Truth be known the main effect is to change the case volume, but this spec is always MUCH better to model accurately by drilling a hole in a piston at TDC, and calculating with the ducts included.
The case volume total has a bigger effect on the real power produced by the sim, rather than duct length.
Duct length, has a bigger effect on the sim run times, not power.
I tried to replicate the run time error as you found TeeZee, and yes my system does the same - I never found that issue as I have never changed the zero figure before.
None of the pipes I have done have a "step", always an oval to round transition in the flange, that is modelled as a short taper in the pipe screen.
So yes, send a report to Neels, it is a "fault".
He is working now on creating a "button" that will collect all the files used by a project, into one file, so its easy to send each other sims to check, making it much quicker for others to review projects already created.
Re Ignitech starting issues, and base advance.
Post up a screen shot of the "Bike" page and advance curve, I may be able to help with that.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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