Pump hydraulics

This paper proposes a method to identify the sum of nonlinear effects and disturbances for the hydraulic drive system, which uses the axial piston pump, based on the application of the Radial Basic Functions neural network (RBF) and state observer model.

5p vigojek 02-02-2024 2 2   Download

This research proposes an advanced proportional-integral-derivative (PID) controller for position-tracking control problem of a pump-controlled Electro-Hydraulic System (EHS). Although conventional PID controller is a practically robust and easy-to-use method, it is difficult to maintain good control performance of such system which contains both high nonlinearities and unknown terms.

8p vidoctorstrange 06-05-2023 8 3   Download

This paper focuses on evaluating the formation and development of cavitation by time of reversible impeller of PaT when operating in pump mode by numerical simulation with ANSYS-Fluent software.

3p vilucius 15-03-2023 5 2   Download

(BQ) presents the following content: Chapter 5 series and parallel pipeline systems, chapter 6 pumps and turbines, appendix A properties of water, appendix B properties of common liquids, appendix C dimensions of steel pipe, appendix D dimensions of type k copper tubing, appendix E conversion factors.

76p runordie6 10-08-2022 7 2   Download

This paper focuses on building a theoretical method, based on the calculation of hydraulic losses to predict the energy performance of a Low-specific speed Pump as Turbine (PaT) quickly and accurately that supported for the PaT’s impeller design. The Euler equation is built with the analysis of hydraulic loss calculation and flow phenomena passing on the machine.

7p vimelindagates 18-07-2022 5 2   Download

"Ebook A working guide to process equipment" present the content process equipment fundamentals; basic terms and conditions; how trays work flooding; why control tower pressure; what drives distillation towers; how reboiler work...

606p flynn_beret 08-10-2020 26 0   Download

Hydraulics - Workbook basic level present automatic lathe pump characteristic; package lifting device pressure relief valve characteristic; drawing press hydraulic resistances; furnace door control double-acting cylinder; cold-store door accumulator; rotary machining station flow control valve and counter-holding; painting booth flow control valve characteristic...

25p gaocaolon6 04-08-2020 5 1   Download

Hydraulic ram pump (also called hydram) is one of the oldest mechanical devices used for water lifting. It is a device that works automatically without relying on electricity or diesel fuel instead, it utilizes the principle of water hammer effect to pump a fraction of water from the source to the desired elevation. A hydraulic ram pump has two moving parts which are the waste valve and delivery valve.

12p kequaidan3 06-03-2020 26 0   Download

Reliable estimation of sewage flow rates is essential for the proper design of sewers, pumping stations, and treatment plants. The design of the various components of the sewerage system should be based on the most critical flow rates with a focuson extremely low and peak flow rates that would be sustained for a duration related to the acceptable limits of behavior of the components under consideration. The extreme flow conditions and to what extent they differ from the average values are closely related to the size of the community or network, and the socioeconomic conditions.

6p kethamoi1 17-11-2019 17 0   Download

In this paper, the current status of test activities is described briefly and significant results are discussed. The large-scale sodium thermal-hydraulic test program, Sodium Test Loop for Safety Simulation and Assessment-1 (STELLA-1), produced satisfactory results, which were used for the computer codes V&V, and the performance test results of the model pump in sodium showed good agreement with those in water.

13p minhxaminhyeu5 30-06-2019 21 0   Download

This study mainly focuses on the structural design optimization of the 4th-generation reactor coolant pump, including analysis of external characteristics, inner flow, and transient characteristic. It was found that: the reactor coolant pump with a central symmetrical dual-outlet volute structure has better radialdirection balance, the pump without guide vane has better hydraulic performance, and the pump with guide vanes has worse torsional vibration and pressure pulsation.

10p minhxaminhyeu3 12-06-2019 13 0   Download

Vacuum consolidation preloading method (VCM) has been widely adopted as an effective solution for soft soil improvement over the world. Recently, VCM has been successfully applied for improving the geotechnical properties of dredged mud, which is normally dumped at reclamation area by hydraulic pumping.

10p vinobita2711 31-05-2019 23 1   Download

(bq) part 1 book "centrifugal pumps - design operation and maintenance" has contents: introduction, centrifugal pump design and construction, pump hydraulics, forces in centrifugal pumps, centrifugal pump operation and characteristics

129p bautroibinhyen20 06-03-2017 45 6   Download

centrifugal pump design and construction, pump hydraulics, forces in centrifugal pumps, centrifugal pump operation and characteristics

131p bautroibinhyen20 06-03-2017 52 5   Download

(bq) part 1 book "practical centrifugal pumps - design operation and maintenance" has contents: introduction, centrifugal pump design and construction, pump hydraulics, forces in centrifugal pumps, centrifugal pump operation and characteristics.

129p bautroibinhyen20 06-03-2017 51 7   Download

(bq) part 1 book "centrifugal pumps" has contents: fluid dynamic principles, pump types and performance data, pump hydraulics and physical concepts, performance characteristics, suction capability and cavitation, duction capability and cavitation,...and other contents.

472p bautroibinhyen19 24-02-2017 40 5   Download

(bq) part 2 book "centrifugal pumps" has contents: numerical flow calculations, hydraulic forces, noise and vibrations, operation of centrifugal pump, turbine operation, general characteristics,...and other contents.

526p bautroibinhyen19 24-02-2017 42 5   Download

(bq) part 2 book "kothandaraman fluid mechanics" has contents: dimensional analysis, similitude and model testing, boundary layer theory and flow over surfaces, flow in open channels, dynamics of fluid flow, hydraulic turbines, rotodynamic pumps, reciprocating pumps.

334p bautroibinhyen19 24-02-2017 70 4   Download

(bq) part 1 book "centrifugal pumps" has contents: fluid dynamic principles, pump types and performance data, pump hydraulics and physical concepts, performance characteristics, partload operation, impact of 3-d flow phenomena performance, duction capability and cavitation, numerical flow calculations.

472p bautroibinhyen18 23-02-2017 32 5   Download

(bq) part 2 book "centrifugal pumps" has contents: hydraulic forces, noise and vibrations, operation of centrifugal pumps, turbine operation, general characteristics, influence of the medium on performance, selection of materials exposed to high flowvelocities, pump selection and quality considerations.

526p bautroibinhyen18 23-02-2017 40 5   Download