An Investigation of Regenerative Blowers and Pumps

Hollenberg, J.W.; Potter, J. H.

doi:10.1115/1.3439487

Cited by 18 publications

(25 citation statements)

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“…A different approach would be required to consider compressibility of the fluid, e.g. in regenerative blowers (Hollenberg and Potter, 1979;Sixsmith and Altmann, 1977), but for the current analysis where the fluid is treated as incompressible, then use of MRF at multiple fixed rotor positions is a suitable and a recommended approach (FLUENT, 2001(FLUENT, , 2005(FLUENT, , 2006a. For modeling turbulence, realizable k 2 1 was chosen (Spalart, 2000;Shih et al, 1995), for the regenerative pump as it is suitable for complex shear flows involving rapid strain, swirl, vortices and locally transitional flows (boundary layer separation and vortex shedding).…”

Section: Methodsmentioning

confidence: 99%

Design optimisation of a regenerative pump using numerical and experimental techniques

Quail

Scanlon

Stickland

2011

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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Regenerative pumps are the subject of increased interest in industry as these pumps are low cost, low specific speed, compact and able to deliver high heads with stable performance characteristics. The complex flow-field within the pump represents a considerable challenge to detailed mathematical modelling. This paper outlines the use of a commercial CFD code to simulate the flow-field within the regenerative pump and compare the CFD results with new experimental data. A novel rapid manufacturing process is used to consider the effect of impeller geometry changes on the pump efficiency. The CFD results demonstrate that it is possible to represent the helical flow field for the pump which has only been witnessed in experimental flow visualisation until now. The CFD performance results also demonstrate reasonable agreement with the experimental tests. The ability to use CFD modelling in conjunction with rapid manufacturing techniques has meant that more complex impeller geometry configurations can now be assessed with better understanding of the flow-field and resulting efficiency

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Section: Methodsmentioning

confidence: 99%

Design optimisation of a regenerative pump using numerical and experimental techniques

Quail

Scanlon

Stickland

2011

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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“…Regenerative machines are particularly useful for low-viscosity, clean liquid applications [10,31] that require low flow rates and relatively high heads. Their inherent ability to provide multi-staging using only one impeller provides much higher heads compared to machines of similar tip speeds [13,15].…”

Section: Applicationsmentioning

confidence: 99%

Regenerative liquid ring pumps review and advances on design and performance

Karlsen-Davies

Aggidis

2016

Applied Energy

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The regenerative liquid ring (RLR) pump is a type of rotodynamic machine which has the ability to develop high heads at relatively low flow rates in only one impeller stage. Although the exact principle of operation of this type of pump has been a phenomenon not fully understood, it has nevertheless been widely applied for over a century in areas of liquid pumping. Despite the low efficiency, RLR pumps have several advantages over other turbomachines with similar tip speed due to relatively low manufacturing costs, simplicity, high reliability, enhanced priming behaviour and can in many applications offer a more efficient alternative. Efficiency improvements are key to reducing energy consumption and ultimately combatting the global climate change. This paper offers an extensive review into the development, performance challenges and design improvements of RLR pumps in order to provide some useful insight on future research and next steps, with a particular focus on improving efficiency throughout the pump life cycle.

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“…Wilson et al [7] proposed a two-dimensional model and predicted the performance curves. Based on the data of the studies [6,7], Hollenberg et al [8] correlated the driving torque with the head and flow rate by using a single experimental factor. Recently, Kang et al [9] presented an one-dimensional model for the prediction of performance and applied it to a pump, a blower, and a compressor with single-sided impeller.…”

Section: Introductionmentioning

confidence: 99%

Reynolds Number Effect on Regenerative Pump Performance in Low Reynolds Number Range

Horiguchi

Yumiba

Tsujimoto

et al. 2008

International Journal of Fluid Machinery and Systems

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The effect of Reynolds number on the performance of a regenerative pump was examined in a low Reynolds number range in experiment. The head of the regenerative pump increased at low flow rates and decreased at high flow rates as the Reynolds number decreased. The computation of the internal flow was made to clarify the cause of the Reynolds number effect. At low flow rates, the head is decreased with increasing the Reynolds number due to the decrease of the shear force exerted by the impeller caused by the increase of leakage and hence local flow rate. At higher flow rates, the head is increased with increasing the Reynolds number with decreased loss at the inlet and outlet as well as the decreased shear stress on the casing wall.

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An Investigation of Regenerative Blowers and Pumps

Cited by 18 publications

References 0 publications

Design optimisation of a regenerative pump using numerical and experimental techniques

Design optimisation of a regenerative pump using numerical and experimental techniques

Regenerative liquid ring pumps review and advances on design and performance

Reynolds Number Effect on Regenerative Pump Performance in Low Reynolds Number Range

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