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Development of Water Resources in India pp 397–406Cite as

Three-Dimensional Flow Measurements at Circular Pier

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Part of the book series: Water Science and Technology Library ((WSTL,volume 75))

Abstract

This paper presents the experimental observations on flow measurement at the circular pier taken by an acoustic Doppler velocimeter. Two experimental runs (RB and UPSH) were conducted in the laboratory under clear-water condition. In one experiment, scour hole was developed, while in the second experiment scour hole was not allowed to develop by making the bed rigid. Measurements of components of time-averaged velocity around the pier in both experimental series were taken at two vertical planes: in front of pier (α = 0°) and behind the pier (α = 180°). Here, α = 0° corresponds to upstream central line in front of pier. In upstream plane close to pier at bed level, magnitude of longitudinal component (u) is high for the UPSH run on account of development of scour hole. Within the scour area region and close to pier, magnitude of w component was high for UPSH run. In the downstream plane at 180° behind the pier, the u component for RB run shows the negative value which indicates that flow is in reverse direction, i.e. towards the pier. In the UPSH run, u component is negative close to pier and its value is positive away from the pier, although its values decrease towards the water surface.

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Authors and Affiliations

  1. Department of Civil Engineering, Jaypee University of Information Technology, Waknaghat, Solan, HP, India

    Ashish Kumar

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  1. Ashish Kumar
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Correspondence to Ashish Kumar .

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Editors and Affiliations

  1. Department of Civil Engineering, University of Petroleum and Energy Studies, Dehradun, India

    Vikas Garg

  2. Department of Biological and Agricultural Engineering and Zachry Department of Civil Engineering, Texas A&M University, College Station, Texas, USA

    Vijay P. Singh

  3. Department of Civil Engineering, University of Petroleum and Energy Studies, Dehradun, India

    Vijay Raj

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Kumar, A. (2017). Three-Dimensional Flow Measurements at Circular Pier. In: Garg, V., Singh, V., Raj, V. (eds) Development of Water Resources in India. Water Science and Technology Library, vol 75. Springer, Cham. https://doi.org/10.1007/978-3-319-55125-8_34

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