Zero-dimensional Model and Pressure Data Analysis of a Variable-Displacement Lubricating Vane Pump

Barbarelli, Silvio; Bova, Sergio; Piccione, Rocco

doi:10.4271/2009-01-1859

Cited by 12 publications

(3 citation statements)

References 2 publications

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“…The torque is measured by an in-line torque meter, while the oil flow rate is measured by a Coriolis Effect flowmeter, installed in the delivery line. 31 In both suction and delivery ducts, there are two restrictors which allow to vary the pressure. Figure 4(b) highlights (P3 and P4) the mounting position of the instantaneous delivery chamber pressure transducers.…”

Section: Reference Pump and Experimental Setupmentioning

confidence: 99%

Numerical analysis and experimental validation of Gerotor pumps: A comparison between a lumped parameter and a computational fluid dynamics-based approach

Pellegri

Vacca

Frosina

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this paper, two alternative numerical approaches for the simulation of Gerotor units are compared: a fast lumped parameter approach for the fluid dynamics through the unit that permits the co-simulation of the radial micro-motion of the rotors, and a computational fluid dynamics approach that puts emphasis on the description of the detailed features of the flow through the unit. Each approach provides unique insights on the unit operation, although with different assumptions and level of result details. For an objective comparison of these two state-of-art models, the authors compared their results with experiments. A commercial pump taken as reference, and tests focused on steady-state volumetric performance as well as the transient features of the outlet port pressure oscillations. The results presented in the paper permit to gain a high level of understanding of the operation of the unit and of the critical aspects that a designer should consider while analyzing such design of positive displacement machines. While comparing the two simulation approaches, the paper highlights the limits and the strengths of each one of the two approaches. In particular, it is shown how both models can match the experimental results considering proper assumptions, in terms of technological clearances and rotors’ micro-motions. The paper constitutes a unique contribution in the field of numerical simulation of Gerotor units and represents a useful reference to the designers looking for suitable methods for simulating existing or novel design solutions.

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Section: Reference Pump and Experimental Setupmentioning

confidence: 99%

Numerical analysis and experimental validation of Gerotor pumps: A comparison between a lumped parameter and a computational fluid dynamics-based approach

Pellegri

Vacca

Frosina

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…With the aim to record the pressure oscillations [10] The measurements of sensor 1 show clearly that the pressure of each sector during the transition phase almost arises to the choking value. Successively, during the filling phase, reaches values between the choking value and the atmospheric value.…”

Section: S393mentioning

confidence: 99%

Theoretical and experimental analysis of a new compressible flow small power turbine prototype

Barbarelli¹,

Florio²,

Scornaienchi³

2017

IJHT

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An innovative compressible-flow small turbine prototype with rotating channel and with 3 optimized deflectors is presented. The prototype is able to recover energies usually lost deriving for example from exhaust gases or waste steams characterized by low pressures and small flow rates. The non-typical turbine configuration allows reaching good performances in different operating conditions. A 70-kW maximum brake power, pressured-air test rig has been set up for gathering global measurements such as pressure, temperature, flow rate, torque and rotational speed. First results show that the overall efficiency of the turbine prototype is comparable with the other small-power configurations, but its rotational speed is significantly reduced. In this paper, the authors provide experimental measurements of the prototype together with a numerical model able to predict its performances.

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“…The model takes into account only transversal plane dynamics of the rotor shaft: it is a planar model with 3 degrees of freedom as presented in Figure 4. This model has been developed and validated by the authors in previous works [2] [21]. Hereafter only a brief overview is given.…”

Section: Case Study 1 -Vane Pump Optimization a The Mathematical Modelmentioning

confidence: 99%

Dynamic behavior of pumps: an efficient approach for fast robust design optimization

et al. 2015

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Classical design optimization procedures\ud rely on the application of optimization algorithms\ud upon system simulations. These algorithms need a\ud large number of samples to converge on the optimal\ud point. Hence design optimization needs large simulation\ud time since each simulation has to be performed\ud many times. In this paper an original and useful\ud methodology to study and optimize mechanical systems\ud is presented. The proposed methodology combines\ud different techniques such as design of\ud experiments, response surface models and evolutionary\ud algorithms leading to larger time reduction with\ud respect to the classical design optimization approach.\ud On the one hand the proposed methodology gives the\ud optimal combination of variables and on the other\ud hand provides important results to understand the\ud influence of each input to the system outputs. Moreover,\ud a robust design process has been carried out in\ud order to consider the manufacturing tolerances of the\ud real mechanical system and assess their effect on the\ud system performance. The results offer important\ud information and design insights that would be very\ud difficult to obtain without such a procedure. In order to\ud demonstrate the methodology effectiveness, two case\ud studies have been accounted: the optimization of the\ud vibration level of a vane pump and a gear pump. To\ud simulate the dynamical behaviour of the two pumps,\ud mathematical models have been used. These models\ud have been developed and validated by the authors in\ud previous works. The mathematical models include the\ud main important phenomena involved in the pumps\ud operation and they have been validated on the basis of\ud experimental data. The main operational and geometrical\ud input variables have been taken into account in\ud the optimization procedure of such pump

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Zero-dimensional Model and Pressure Data Analysis of a Variable-Displacement Lubricating Vane Pump

Cited by 12 publications

References 2 publications

Numerical analysis and experimental validation of Gerotor pumps: A comparison between a lumped parameter and a computational fluid dynamics-based approach

Numerical analysis and experimental validation of Gerotor pumps: A comparison between a lumped parameter and a computational fluid dynamics-based approach

Theoretical and experimental analysis of a new compressible flow small power turbine prototype

Dynamic behavior of pumps: an efficient approach for fast robust design optimization

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