'Tot_Inj_Mass' decrease -- CFD Online Discussion Forums

January 31, 2021, 22:06

'Tot_Inj_Mass' decrease

liang11

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liang11

Join Date: Nov 2020

Posts: 15

Rep Power: 5

Hello, everyone!
I am working on water direct injection on a SI engine. In one case, the water mass and injection duration are respectively set as 5.1 mg and 2.2 °CA. And the setup of the spray model is similar to GDI spray.
However, the total injection mass decreases near the end of injection, even lower than the liquid spray mass. I don't know why?

Besides, if the water mass and injection duration increase, the problem may not exist.

I really appreciate your help!

Attached Images

	Tot_Inj_Mass.jpg (63.4 KB, 18 views)
	liq_spray_mass.jpg (47.4 KB, 13 views)

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