Question: Flow through a sudden enlargement (Fig. 7.6-1). A fluid is flowing through a sudden enlargement, in which the initial and final diameters are D 1

Flow through a sudden enlargement (Fig. 7.6-1). A fluid is flowing through a sudden enlargement, in which the initial and final diameters are D₁ and D₂ respectively. At what ratio D₂/D₁ will the pressure rise P₂ – P₁ be a maximum for a given value of v₁?

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