TURBULENT KINETIC ENERGY NUMERICAL MODELING IN 2D HORIZONTAL FLOW FOR SIMULATION OF SCOURING IN COHESIVE AND GRANULAR BED AROUND CIRCULAR PIERS

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SABBAGH YAZDI S.R.; DEHGHAN NAYERI R.

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Journal: Civil Engineering Infrastructures Journal Year:2012 | Volume:45 | Issue:5 Page(s): 543-555

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Title

TURBULENT KINETIC ENERGY NUMERICAL MODELING IN 2D HORIZONTAL FLOW FOR SIMULATION OF SCOURING IN COHESIVE AND GRANULAR BED AROUND CIRCULAR PIERS

Author(s)

SABBAGH YAZDI S.R. | DEHGHAN NAYERI R. | Issue Writer Certificate

Keywords

SCOURING SIMULATIONQ3

COHESIVE AND GRANULAR BEDSQ3

CIRCULAR PIERQ3

SHALLOW WATER EQUATIONSQ3

K-ε TURBULENT MODEL SRICOS METHODQ3

VERTEX BASE FINITE VOLUMEQ3

Abstract

In order to simulate the bed scouring around piers, many researchers have developed sophisticated numerical algorithms. In this work, the numerical modeling of souring around cylindrical piers are performed by solution of the SHALLOW WATER EQUATIONS flow and depth averaged turbulent model equations coupled with the empirical relations for COHESIVE AND GRANULAR BEDS. The shallow water flow equations include to the depth average continuity and motion and depth average turbulent model equations in horizontal Cartesian coordinate systems. For computation of bed erosion at each time step, the numerical results of turbulent flow model are combined with SRICOS empirical bed erosion empirical relations, which are derived from laboratory experiments. The governing partial differential equations of depth average turbulent flow are converted to discrete form using a VERTEX BASE FINITE VOLUME method suitable for triangular unstructured meshes. Therefore, scouring due to flow around piers with arbitrary shape can be modeled. Several test cases of scouring on the cohesive and sandy beds around CIRCULAR PIERs are modeled using the developed numerical model and the computed results are compared with the laboratory measurements reported for scouring in cohesive and granular bed around CIRCULAR PIERs by the previous experimental workers. Despite of the simplicity and light computational work load of the introduced algorithm, the computed results show promising agreements with the anticipated trends.

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APA: Copy

SABBAGH YAZDI, S.R., & DEHGHAN NAYERI, R.. (2012). TURBULENT KINETIC ENERGY NUMERICAL MODELING IN 2D HORIZONTAL FLOW FOR SIMULATION OF SCOURING IN COHESIVE AND GRANULAR BED AROUND CIRCULAR PIERS. CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING), 45(5), 543-555. SID. https://sid.ir/paper/166518/en

Vancouver: Copy

SABBAGH YAZDI S.R., DEHGHAN NAYERI R.. TURBULENT KINETIC ENERGY NUMERICAL MODELING IN 2D HORIZONTAL FLOW FOR SIMULATION OF SCOURING IN COHESIVE AND GRANULAR BED AROUND CIRCULAR PIERS. CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING)[Internet]. 2012;45(5):543-555. Available from: https://sid.ir/paper/166518/en

IEEE: Copy

S.R. SABBAGH YAZDI, and R. DEHGHAN NAYERI, “TURBULENT KINETIC ENERGY NUMERICAL MODELING IN 2D HORIZONTAL FLOW FOR SIMULATION OF SCOURING IN COHESIVE AND GRANULAR BED AROUND CIRCULAR PIERS,” CIVIL ENGINEERING INFRASTRUCTURES JOURNAL (CEIJ) (JOURNAL OF FACULTY OF ENGINEERING), vol. 45, no. 5, pp. 543–555, 2012, [Online]. Available: https://sid.ir/paper/166518/en

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