KIVA3V2R injection problem
 

I met an injection problem when simulating SI engine with KIVA. 1. The prog ran well if there is no injection. 2. The prog crashed when injection was applied. (Error message showed velocity or temp interation over limit, dt reduced gradually, finally went to 10e-10. then program stopped) 3. It looks like crash happened when droplet hit the wall. Any help will be appriciated! Thanks in advanced!