EXPERIMENTAL INVESTIGATION ON NONLINEAR ANALYSIS OF UNSTEADY FLOW THROUGH COARSE POROUS MEDIA

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SHOKRI MORTEZA; SABOOR MOHAMMAD REZA; BAYAT HABIBOLAH; SADEGHIAN JALAL

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Journal: WATER AND WASTEWATER Year:2012 | Volume:23 | Issue:4 (84) Page(s): 106-115

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Title

EXPERIMENTAL INVESTIGATION ON NONLINEAR ANALYSIS OF UNSTEADY FLOW THROUGH COARSE POROUS MEDIA

Author(s)

SHOKRI MORTEZA | SABOOR MOHAMMAD REZA | BAYAT HABIBOLAH | SADEGHIAN JALAL | Issue Writer Certificate

Keywords

COARSE GRANULAR POROUS MEDIAQ3

FORCHHEIMER EQUATIONQ2

NONLINEAR FLOWQ3

UNSTEADY FLOWQ2

CRUSHED AGGREGATESQ3

Abstract

An experimental investigation of water flowing through coarse porous media in an open channel with free surface was conducted to better understand the mechanism of energy loss and changes with flow velocity. In this research, experimentally, investigate water flowing through coarse porous media in nonlinear unsteady state. To cast light on the analytical characteristics of unsteady-turbulent flow within coastal rockfill structures, an extensive research program has been carried out using the open channel flow principles. Crushed coarse aggregates with pre-determined gradations were carefully packed in a 600 mm wide flume through which, variation of pheartic surface as a result of the tail-water variation - to resume UNSTEADY FLOW conditions - were optically recorded by means of a set of piezometers installed along the flume’s side-wall. Discharge rates were measured by a calibrated v-notch and the tail-water surface variations were precisely timed by means of delicate electrical equipments specially designed and manufactured for these experiments. Observations on the flow media. b) Although a third term defining effects of unsteadiness may be included in the above mentioned equation, it is of little engineering importance. c) The nature of hydraulic gradient (i) variations versus Reynolds number (Re) - which were plotted for all sets of observations - confirms existence of turbulent conditions in all experiments. d) Our unique experimentation set-up adequately resembles the actual prototype conditions.

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APA: Copy

SHOKRI, MORTEZA, SABOOR, MOHAMMAD REZA, BAYAT, HABIBOLAH, & SADEGHIAN, JALAL. (2012). EXPERIMENTAL INVESTIGATION ON NONLINEAR ANALYSIS OF UNSTEADY FLOW THROUGH COARSE POROUS MEDIA. WATER AND WASTEWATER, 23(4 (84)), 106-115. SID. https://sid.ir/paper/103959/en

Vancouver: Copy

SHOKRI MORTEZA, SABOOR MOHAMMAD REZA, BAYAT HABIBOLAH, SADEGHIAN JALAL. EXPERIMENTAL INVESTIGATION ON NONLINEAR ANALYSIS OF UNSTEADY FLOW THROUGH COARSE POROUS MEDIA. WATER AND WASTEWATER[Internet]. 2012;23(4 (84)):106-115. Available from: https://sid.ir/paper/103959/en

IEEE: Copy

MORTEZA SHOKRI, MOHAMMAD REZA SABOOR, HABIBOLAH BAYAT, and JALAL SADEGHIAN, “EXPERIMENTAL INVESTIGATION ON NONLINEAR ANALYSIS OF UNSTEADY FLOW THROUGH COARSE POROUS MEDIA,” WATER AND WASTEWATER, vol. 23, no. 4 (84), pp. 106–115, 2012, [Online]. Available: https://sid.ir/paper/103959/en

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