passages.id: split_4_test_193_passage
passages.type: progene_text
passages.text: The modelling of the shear effects is now conceivable : basic descriptive data used so far ( type of pump , geometry or opening degree of the valve , etc. ) being completed and partially substituted by quantitative parameters ( rotating velocity , capacity , or internal leakage for the pumps , Kv coefficient for the valves ) .