#اصطلاح_روز
سلام و صبح به خير عرض ميكنيم خدمت همه ى مهندسان عزيز، باز هم با يك اصطلاح روز ديگه در خدمتتون هستيم.
امروز از يك منبع معتبر، سه اصطلاح هم خانواده رو بازبينى ميكنيم:
#NPSH
#NPSHr
#NPSHa
In a hydraulic circuit, net positive suction head (NPSH) may refer to one of two quantities in the analysis of cavitation:
The Available NPSH (NPSHA): a measure of how close the fluid at a given point is to flashing, and so to cavitation.
The Required NPSH (NPSHR): the head value at a specific point (e.g. the inlet of a pump) required to keep the fluid from cavitating.
NPSH is particularly relevant inside centrifugal pumps and turbines, which are parts of a hydraulic system that are most vulnerable to cavitation. If cavitation occurs, the drag coefficient of the impeller vanes will increase drastically - possibly stopping flow altogether - and prolonged exposure will damage the impeller.
لينك مربوط به توضيحات كامل فارسى:
s6.uplod.ir:182/d/2k2y5xoz4hvhuf6t46pzb4zn75n454n2ih4lxu2opjzmgunumgxheqpt/NPSH.pps
سلام و صبح به خير عرض ميكنيم خدمت همه ى مهندسان عزيز، باز هم با يك اصطلاح روز ديگه در خدمتتون هستيم.
امروز از يك منبع معتبر، سه اصطلاح هم خانواده رو بازبينى ميكنيم:
#NPSH
#NPSHr
#NPSHa
In a hydraulic circuit, net positive suction head (NPSH) may refer to one of two quantities in the analysis of cavitation:
The Available NPSH (NPSHA): a measure of how close the fluid at a given point is to flashing, and so to cavitation.
The Required NPSH (NPSHR): the head value at a specific point (e.g. the inlet of a pump) required to keep the fluid from cavitating.
NPSH is particularly relevant inside centrifugal pumps and turbines, which are parts of a hydraulic system that are most vulnerable to cavitation. If cavitation occurs, the drag coefficient of the impeller vanes will increase drastically - possibly stopping flow altogether - and prolonged exposure will damage the impeller.
لينك مربوط به توضيحات كامل فارسى:
s6.uplod.ir:182/d/2k2y5xoz4hvhuf6t46pzb4zn75n454n2ih4lxu2opjzmgunumgxheqpt/NPSH.pps