Performance of a nonuniform resonator based valve-less standing wave suction pump for gases is evaluated. Nonuniform resonator with a linear area variation was used to achieve high amplitude standing wave. High oscillating pressure at the small end of the resonator was rectified by fluidic diodes. Experiments were done with pairs of rectifiers, each of which consisted multiple diode elements in series. The performance of the valve-less standing wave pump is evaluated in terms of suction flow rate and suction pressure achieved. It was found that higher driving amplitudes gave higher flow rates and higher suction pressures. Increasing the number of diode elements also did the same. Smaller diode diameter cases produced higher suction pressures at similar flow rates. The measured maximum suction pressure was 4900 Pa and the maximum flow rate observed was 10.2 slpm of air respectively, while operating around 925 Hz. © 2017 Elsevier B.V.

Thiruchengode M. Muruganandam

Department of Aerospace Engineering

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Sensors and Actuators, A: Physical

Feasibility of multistaging of a nonuniform area resonator based fluidic pump, both in series as well as in parallel, is discussed in comparison with single stage pump. Multistaging up to two stages was carried out in this study. Multistaging was successful in achieving higher flow rates and higher back pressures than a single stage pump. Series pump delivered 1.8 times the pressure for zero flow rate, whereas parallel pump delivered 2.3 times the flow rate at zero back pressure. Of all three configurations, single stage pump was found to have the best efficiency based on the input power requirements. It was also found that the acoustic interactions between the stages can affect the performance of the pump. © 2019 Elsevier B.V.

Fulltext

Multistaging of nonuniform area resonator based fluidic acoustic pump

Fluidics has the advantage of using no-moving-parts to manage fluid motion. Acoustic compressor/pump has become the latest entry into the field of fluidics as a no-moving-part pumping technology. Despite the advantage of using no-moving-parts, there are only a few acoustic fluidic pumps that have been physically built and tested to date. However, in the acoustics field, there are many acoustic pumps built employing moving-parts rectifiers. The fluidics field can benefit immensely from the recent advances made in acoustic compression technology, while the acoustic field can benefit from the plethora of work that already exists in fluidics. Although researchers have conducted extensive studies on this topic during the last few decades, no single resource lists, examines, combines and infers the immense information about it. This review offers a collective resource, tracing the development of the acoustic compressor/pump from its invention to recent advances, in terms of understanding, prediction, and application. This brief review (a) serves as a literature resource for researchers from various areas (especially from the field of acoustics and fluidics) (b) provides a critical assessment of the state of the art, and (c) provides suggestions for future designs. © 2018 Elsevier B.V.

Journal	Data powered by TypesetSensors and Actuators, A: Physical
Publisher	Data powered by TypesetElsevier B.V.
ISSN	09244247
Open Access	No