What happens if a negative pressure gradient is applied to a diffuser?

[ahog]

A diffuser normally decreases the velocity by increasing the area. With assumption of an incrompressible flow, according to Bernoulli, the static pressure increases. What happens if one "forces" the flow through a diffuser by applying a bigger pressure on the inlet than on the outlet?

 

[Baluncore]

Welcome to PF.

You have hypothesised a paradoxical impossibility.
The flow will increase until the output pressure rises to the point where Bernoulli is satisfied.

 

[ahog]

Welcome to PF.

You have hypothesised a paradoxical impossibility.
The flow will increase until the output pressure rises to the point where Bernoulli is satisfied.

Thank you very much, i was really driving myself crazy...