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ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684
Indexed in
VISUALIZATION OF CAVITATION IN HIGH-PRESSURE DIESEL FUEL INJECTOR ORIFICES
Краткое описание
Modern diesel fuel injectors operate at pressures of up to ∼ 200 MPa. Cavitation of the liquid fuel inside of injector orifices has long been known to occur because of structural damage to the orifice walls. Yet few visualizations of this economically important flow exist. The first true-scale, true-pressure visualizations in tilted holes are presented and discussed. True-pressure and true-scale experiments are necessary as scaling of these unsteady, nonequilibrium cavitating flows is presently impossible. The extreme pressure and the small size of these unsteady two-phase internal flows present challenges for flow visualization. Nevertheless, successful experiment design and visualization of the unsteady two-phase flow inside of true-scale tilted diesel injector holes as small as 200 μm diameter and at pressures up to 220 MPa are presented.
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