Ms. YouWen Xu Profile

YouWen Xu

at Xi'an Traffic Engineering Institute

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Proceedings Article | 23 December 2021 Paper

Study on the impact of water delivery velocity of aqueduct on water temperature

Youwen Xu, Weiyou Wang, Richen Ji

Proceedings Volume 12058, 120583Q (2021) https://doi.org/10.1117/12.2619586

KEYWORDS: Heat flux, Finite element methods, Solids, Safety, Water, Library classification systems, Differential equations

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For water delivery of aqueducts in winter, water temperature and air temperature are main factors that affect aqueduct structure and operation. Moreover, water has different influences on water temperature when it is at different flow velocities. An aqueduct was taken as an example to establish a finite element model, and differential equations of heat conduction and Newton’s cooling formula were used to figure out total heat loss of water and water temperature. Based on calculation results, when the air temperature is the same with the aqueduct water temperature, the greater the aqueduct inlet flow velocity, the less the heat loss of the water body on the same section along the route, the slower the heat dissipation rate. The smaller the water temperature reduction amplitude, and the lower the reduction rate. However, heat loss of water increases (it almost shows a linear increase trend) and water temperature decreases (it almost shows a linear decrease trend) along with the increase of the aqueduct length.

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