Pressure pulsations in reciprocating pump piping systems Part 2: Experimental investigations and model validation

Edge, K A; Boston, Oliver P.; Xiao, Kaili; Longvill, K C M J; Burrows, Kim

doi:10.1243/0959651971539777

Cited by 10 publications

(13 citation statements)

References 4 publications

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“…The reason for this is that PD pumps are very difficult to model. This was proved in the technical literature by many authors such as Johnston [9], Edge [10], [11], and Iannetti [1]. The numerical methods which are used, especially in the research environment and sometimes in industry, are CFD based methodologies and lumped parameters analytical methods.…”

Section: Introductionmentioning

confidence: 95%

“…This highlights the importance of finding alternative tools. Simplified analytic methods were developed in times when the scarce computational power available gave no other option to researchers such as Johnston [9] and Edge [10], [11]. These methods consider every item composing a pumping system as a lumped parameter where the information of its influence on the overall system is concentrated in a parametric function.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Engineering Procedure for Positive Displacement Pump Performance Analysis Based on 1D and 3D CFD Commercial Codes

Josifovic

Stickland

Iannetti

et al. 2017

Volume 1: 37th Computers and Information in Engineering Conference

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show abstract

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Engineering Procedure for Positive Displacement Pump Performance Analysis Based on 1D and 3D CFD Commercial Codes

Josifovic

Stickland

Iannetti

et al. 2017

Volume 1: 37th Computers and Information in Engineering Conference

View full text Add to dashboard Cite

show abstract

“…Budny et al [7] performed the experiment to test the structural pipeline damping, and the results showed that the structural damping could accelerate the fluid transient decay obviously. Edge et al [8] conducted the test rig to investigate pressure pulsation characteristics in reciprocating pump pipeline system, and the results showed that the pressure pulsation was dependent on the pump speed. Adamkowski et al [9] conducted a special test rig to test the effect of elastic support onto fluid transients and water hammer.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Vibration Analysis of Hydraulic Pipeline System under Multiexcitations

Gao

Zhang

et al. 2020

Shock and Vibration

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Pipeline systems in aircraft are subjected to both hydraulic pump pressure fluctuations and base excitation from the engine. This can cause fatigue failures due to excessive vibrations. Therefore, it is essential to investigate the vibration behavior of the pipeline system under multiexcitations. In this paper, experiments have been conducted to describe the hydraulic pipeline systems, in which fluid pressure excitation in pipeline is driven by the throttle valve, and the base excitation is produced by the shaker driven by a vibration controller. An improved model which includes fluid motion and base excitation is proposed. A numerical MOC-FEM approach which combined the coupling method of characteristics (MOC) and finite element method (FEM) is proposed to solve the equations. The results show that the current MOC-FEM method could predict the vibration characteristics of the pipeline with sufficient accuracy. Moreover, the pipeline under multiexcitations could produce an interesting beat phenomenon, and this dangerous phenomenon is investigated for its consequences from engineering point of view.

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“…Generally, the modeling of a reciprocating pump or reciprocating compressor includes the models on piston motion, variation of cylinder pressure, inclusion of cavitation, valve motion, thermodynamic, and heat transfer in evaluating the performance of the pump [80][81][82][83][84]. Some special modeling such as pressure pulsation modeling due to the reciprocating motion has also been carried out in examining the flow characteristics on reciprocating pumps [85,86]. [85] In 1984, Edge [81] developed a digital computer model of a multi-cylinder piston pump with self-acting valves.…”

Section: Mathematical Modelmentioning

confidence: 99%

Design of a miniature pump

Lieu¹

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The applications of pumps are becoming increasingly extensive and there are more application-specific constraints that are imposed on pump designs, including constraints in size and capacity. Thus, miniature pumps have gained their popularity in many industries such as pharmaceutical, medical, MEMS applications etc. The design and development of a miniature pump is necessary to serve these applications. However, miniaturization process is both difficult and challenging. In this project, a miniature pump with better performance has been designed and developed. Several designs are discussed and explored and the reciprocating ball pump (RBP) is proposed. The working principle of the RBP is presented. The RBP is unique in that it does not require any valves to regulate flow and inherently produce unidirectional flow. In addition, the design of this pump is simple, compact and easy to fabricate. Besides that, this pump has potential in pumping fluid with minimal contamination because the pumping unit is small in size and it does not require a seal and bearing. Furthermore, it has the potential in generating a higher flow rate as compared to the conventional reciprocating pump. The final RBP is 19.5 mm long, has a diameter of 18.8 mm and weighs less than 25 grams. In this research project, a mathematical model has been developed with some assumptions and simplifications to reveal the working principle and to evaluate the performance of the RBP. It also enables the prediction on the instantaneous flow rate and pressure variations upstream and downstream of the RBP. In addition, parametric studies have been conducted to determine the effects of the weight of the ball and the Abstract iii size of the pumping unit on its performance. In addition, parametric studies show that the optimal RBP has a casing length of 11.5 mm, a ball of diameter 9.6 mm with a rear cap hole diameter of 8.5 mm. CFD simulation with fluid-structure-interaction (FSI) of the RBP has been successfully conducted via ANSYS-FLUENT by using moving and deforming dynamic mesh model with user-defined-function (UDF). Asides from revealing the working principle and the performance of the RBP, CFD simulation also shows the working principle of the RBP in a more comprehensive manner through the pressure distribution and velocity flow field. Subsequently, the functionality of the RBP has been verified by experimental studies. In addition, a modified test rig was used to conduct flow visualization experiments. The mathematical model and CFD simulation have been validated by the experimental performance characteristic and flow visualization studies as they agree qualitatively with the results obtained from both mathematical model and CFD simulation. The three studies show that the RBP generates additional induced flow especially during its backward stroke even though the RBP is operated at a back pressure of as high as 1000 Pa. This proves that the RBP is superior to a conventional reciprocating pump having the same dimensions. The RBP has a flow efficiency of as h...

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Pressure pulsations in reciprocating pump piping systems Part 2: Experimental investigations and model validation

Cited by 10 publications

References 4 publications

Engineering Procedure for Positive Displacement Pump Performance Analysis Based on 1D and 3D CFD Commercial Codes

Engineering Procedure for Positive Displacement Pump Performance Analysis Based on 1D and 3D CFD Commercial Codes

Experimental and Numerical Vibration Analysis of Hydraulic Pipeline System under Multiexcitations

Design of a miniature pump

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