DETERMINATION OF THE NONLINEAR EQUATION COEFFICIENTS FOR FLOW THROUGH COARSE ALLUVIUM FOUNDATIONS

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BAZARGAN J.; BAYAT H.A.

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Journal: ESTEGHLAL Year:2002 | Volume:21 | Issue:1 Page(s): 101-113

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Information Journal Paper

Title

DETERMINATION OF THE NONLINEAR EQUATION COEFFICIENTS FOR FLOW THROUGH COARSE ALLUVIUM FOUNDATIONS

Author(s)

BAZARGAN J. | BAYAT H.A. | Issue Writer Certificate

Keywords

TURBULENT FLOWQ2

ROCK FILLQ4

ALLUVIUM FOUNDATIONQ4

REYNOLDS NUMBERQ2

AQUIFERQ4

Abstract

As a result of the limitations in the application of Darey Law (V=ki) to linear-laminar flow regime, through porous media and due to tire fact that in coarse alluviums, the REYNOLDS NUMBER may exceed its critical value, the so-called Laplas equatioll cannot be used for precise analyses of coarse granular foundations. A more general relationship is. therefore Required for such cases. However, a common relationship between piezometric gradient "i" and the approach velocity "v" within porous media shown as i=m It" leads to major difficulties in undertaking complicated tests to determine tlte values of m and n. It is shown that by combining the above-mentioned relationship with the continuity equation, a differential equation may be obtained to give piezometric hem/ and a potential function j, which, in turn, lead to the uplift force distributions and the seepage quantities through porous media. To overcome difficulties associated with m and n estimations in the model and as a result of fulfilling, extensive research programme, afresh and reliable procedure has been developed and explained to assess m and n by means <!simple stepped pump-out test. The practicial applicability of the method for a given confined AQUIFER is also examined. Find in indicates that the proposed procedure a) makes the use of the differential equation for TURBULENT FLOW in porous media possib and b) provides means to determine the nonlinear equation parameters (m&n) at an acceptable precision. The computed values the parameters are also submitted.

Cites

STUDY OF RIVER FLOW EFFECTS ON SUBSURFACE WATER DIVERSION USING POROUS MEDIA IN SEASONAL RIVERS

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APA: Copy

BAZARGAN, J., & BAYAT, H.A.. (2002). DETERMINATION OF THE NONLINEAR EQUATION COEFFICIENTS FOR FLOW THROUGH COARSE ALLUVIUM FOUNDATIONS. ESTEGHLAL, 21(1), 101-113. SID. https://sid.ir/paper/6054/en

Vancouver: Copy

BAZARGAN J., BAYAT H.A.. DETERMINATION OF THE NONLINEAR EQUATION COEFFICIENTS FOR FLOW THROUGH COARSE ALLUVIUM FOUNDATIONS. ESTEGHLAL[Internet]. 2002;21(1):101-113. Available from: https://sid.ir/paper/6054/en

IEEE: Copy

J. BAZARGAN, and H.A. BAYAT, “DETERMINATION OF THE NONLINEAR EQUATION COEFFICIENTS FOR FLOW THROUGH COARSE ALLUVIUM FOUNDATIONS,” ESTEGHLAL, vol. 21, no. 1, pp. 101–113, 2002, [Online]. Available: https://sid.ir/paper/6054/en

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