Investigating the Effects of the Density and Pattern of Roughness Blocks with Obstacle on the Control of Density Current Head

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Khosropour Soleyman; KASHEFIPOUR SEYED MAHMOOD; DARYAEE MEHDI

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Journal: JOURNAL OF HYDRAULICS Year:2019 | Volume:14 | Issue:2 (142) Page(s): 105-115

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Title

Investigating the Effects of the Density and Pattern of Roughness Blocks with Obstacle on the Control of Density Current Head

Author(s)

Khosropour Soleyman | KASHEFIPOUR SEYED MAHMOOD | DARYAEE MEHDI | Issue Writer Certificate

Keywords

Density currentQ1

Bed slopeQ1

Roughness patternQ1

Roughness densityQ1

Control percentageQ1

Abstract

present paper investigates the simultaneous effects of the density and pattern of bed roughness with obstacle on the control of a dense current head. The measurements were conducted in a flume (length 720 cm, width 35 cm, and height 70 cm) using two Roughness patterns (parallel and zigzag), and with four roughness densities (0%, 10%, 30%, and 50%). In all the tests series, the dense fluid was assumed to be of the salt type with a density of 20 g/lit. Two series of tests were performed using rough surfaces with and without obstacle. In total, 56 tests were conducted. The results showed that in all of the tests with slope, for the zigzag pattern, the highest control for the head of the dense current occurred at a density of 30%; while this density value was 10% for the parallel pattern. Moreover, using an obstacle in addition to roughness increased the control of the Density current head. The mean Control percentage in the tested slopes was 97% for the zigzag pattern at a density of 30% compared to the mode without roughness and with a zero percent slope. However this mean Control percentage increased to 163% by implementing an obstacle. Furthermore, in the parallel pattern with a density of 10%, the mean Control percentage for the modes without and with an obstacle were respectively 44% and 74%.

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APA: Copy

Khosropour, Soleyman, KASHEFIPOUR, SEYED MAHMOOD, & DARYAEE, MEHDI. (2019). Investigating the Effects of the Density and Pattern of Roughness Blocks with Obstacle on the Control of Density Current Head. JOURNAL OF HYDRAULICS, 14(2 (142) ), 105-115. SID. https://sid.ir/paper/124179/en

Vancouver: Copy

Khosropour Soleyman, KASHEFIPOUR SEYED MAHMOOD, DARYAEE MEHDI. Investigating the Effects of the Density and Pattern of Roughness Blocks with Obstacle on the Control of Density Current Head. JOURNAL OF HYDRAULICS[Internet]. 2019;14(2 (142) ):105-115. Available from: https://sid.ir/paper/124179/en

IEEE: Copy

Soleyman Khosropour, SEYED MAHMOOD KASHEFIPOUR, and MEHDI DARYAEE, “Investigating the Effects of the Density and Pattern of Roughness Blocks with Obstacle on the Control of Density Current Head,” JOURNAL OF HYDRAULICS, vol. 14, no. 2 (142) , pp. 105–115, 2019, [Online]. Available: https://sid.ir/paper/124179/en

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