hydroxyapatite
发表于 2025-3-21 16:20:56
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富饶
发表于 2025-3-21 20:54:12
Pump types and performance data,r in turbomachines is invariably based on hydrodynamic processes for which characteristically all pressure and energy differences are proportional to the square of the circumferential rotor speed. By contrast, positive displacement pumps (e.g. piston pumps) essentially deliver the same volume Vstrok
浮雕
发表于 2025-3-22 01:43:37
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无能性
发表于 2025-3-22 04:38:13
Partload operation, impact of 3-D flow phenomena performance, q* < 0.8, at high nq below q* < 0.9. Since blade inlet angles and channel cross sections are too large for the reduced flow rate, flow patterns during partload operation fundamentally change compared with the design point. The flow becomes highly 3-dimensional since it separates in the impeller and
极小量
发表于 2025-3-22 12:40:56
Suction capability and cavitation,ally drops to the vapor pressure of the liquid due to excess velocities, so that some fluid evaporates and a two-phase flow is created in a small domain of the flow field. The vapor condenses suddenly (“implodes”) as soon as it is transported downstream into zones where the static pressure again exc
全能
发表于 2025-3-22 13:22:47
Design of the hydraulic components,loping these components, the main dimensions and blade angles are calculated in a first step. Subsequently, the hydraulic contours are designed based on certain rules and methods. Many pump manufacturers employ computer programs for this work, and the drawings are generated on 2D-CAD systems. Howeve
全能
发表于 2025-3-22 17:13:52
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ULCER
发表于 2025-3-23 00:35:18
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Flounder
发表于 2025-3-23 04:28:33
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蚊帐
发表于 2025-3-23 05:50:13
Operation of centrifugal pumps, centrifugal pump depends on the pressure difference Δp = ρ×g×HA imposed by the system on the pump. The pressure rise Δp generally depends on the flow rate because of hydraulic losses. Thus the system characteristic HA = f(Q) is understood as the difference in total pressure which must be supplied b