Improving Liquid Filtration through Porous Media by Wave Exposure
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RIMENTAL MECHANICS, DIAGNOSTICS, AND TESTING
Improving Liquid Filtration through Porous Media by Wave Exposure A. S. Korneeva,* and S. R. Ganieva a
Blagonravov Institute of Mechanical Engineering, Russian Academy of Sciences, Moscow, 101990 Russia *e-mail: [email protected] Received October 29, 2019; accepted March 27, 2020
Abstract—This paper presents an experimental study of water filtering through a porous medium exposed to waves generated by a hydrodynamic oscillator. The amplitude–frequency characteristics of the oscillator are obtained for various water flow rates through this oscillator. The optimum flow rate at which the filtration rate is the highest was obtained. These results can be used in the design of hydrodynamic oscillators for technological purposes. Keywords: filtration, porous medium, hydrodynamic oscillator, experiment. DOI: 10.3103/S1052618820040081
The problem of accelerating filtration through porous media is relevant for oil production [1–3] and for a number of technological processes, for example, treatment of porous materials with liquids [4]. One of the promising methods for its solution is wave processing of a porous medium using hydrodynamic oscillators [1, 5]. Developing such generators requires both numerical and experimental studies. The experimental setup (Fig. 1) consisted of a test chamber 1 (with an inner diameter of 440 mm) and a water supply chamber 2 (with an inner diameter of 240 mm). The cameras were made of Plexiglas for visual observation. Tap water was poured into the chambers through pipes A and B. At the end of the experiment, it was discharged through pipes С and D. Continuous circulation of water through the wave generator 3 was carried out using pump 4 through pipe E. The water 3 F
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Fig. 2. Dependences of the pressure at the outlet of the generator p on time t at various water flow rates through the generator Qg: (1) Qg = 4 dm3/min; (2) Qg = 6 dm3/min; (3) Qg = 8 dm3/min; (4) Qg = 10 dm3/min; (5) Qg = 12 dm3/min; (6) Qg = 14 dm3/min; (7) Qg = 16 dm3/min; (8) Qg = 18 dm3/min.
flow rate through the generator was adjusted using the bypass valve 5 and the control valve 6. The flow rate was measured by a flowmeter 7 (a rotameter). The device studied consisted of a case 8 in which a porous medium 9 was sealed with a flexible membrane 10. The wave generator 3 was installed in the cover
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