can u tell me the velocity of air and velocity of fuel
 

hi
iam doing a project in combustion of 4-stroke single cylinder diesel engine.
i have taken the inlet diameter as 40mm and exhaust as 34mm
iam running the engine at a maximum speed of 3000rpm
i have taken the fuel injector diameter as 1.5mm
i have designed my manifold by these speciations.
so, to work this in cfd i want to know the velocities of air at the inlet manifold and fuel injector velocity
so will u please tell me the details of this