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In this piece, geometry of dually fluid contained in is considered introducing a speedy jet at a location onto fluid at rest. With introducing the jet, simulations are carried out after constructing geometry with suitable meshing. Refinement is done at jet ways. Surface of target fluid at rest socked and at a velocity magnitude the fluid in container hid the jet. Reappearance of jet is seen and bubble is drawn. The influence is investigated in regard of relation between the surface dip generated and variation of jet velocity. There are many narrow down actions which can be observed.
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