Hi vilas,
Same ways as the suction pump works.
http://www.eaton.com/ecm/groups/publ.../ct_207260.pdf
"Due to the action of the motive flow, fuel in the tank is drawn into the jet pump through the induced inlet and mixed with the motive flow and then discharged through the pump discharge outlet port, to be deposited close to the boost pump inlet."
I understand how the venturi effect can be used to move fuel from adjacent tanks - but I fail to see why Airbus would design such a venturi in their bleed air system.