Analytical and numerical analysis of tides and salinities in estuaries; part I: tidal wave propagation in convergent estuaries

Based on the analytical solution of one-dimensional simplified equation of damping tidal wave and Heuristic stability analysis, the precision of numerical solution, computational time and the relationship between the numerical dissipation and the friction dissipation are discussed with different numerical schemes in this paper. The results show that (1) when Courant number is less than unity, the explicit solution of tidal wave propagation has higher precision and requires less computational time than the implicit one; (2) large time step is allowed in the implicit scheme in order to reduce the computational time, but the precision of the solution also reduce and the calculation precision should be guaranteed by reducing the friction factor: (3) the friction factor in the implicit solution is related to Courant number, presented as the determined friction factor is smaller than the natural value when Courant number is larger than unity, and their relationship formula is given from the theoretical analysis and the numerical experiments. These results have important application value for the numerical simulation of the tidal wave.

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OS0616 Numerical analysis of ultrasonic wave propagation in the corner section of CFRP structure

The Proceedings of the Materials and Mechanics Conference ◽

10.1299/jsmemm.2013._os0616-1_ ◽

2013 ◽

Vol 2013 (0) ◽

pp. _OS0616-1_-_OS0616-3_

Author(s):

Junta ITO ◽

Takahiro HAYASHI ◽

Akira KURAISHI ◽

Shiro BIWA

Keyword(s):

Wave Propagation ◽

Numerical Analysis ◽

Ultrasonic Wave ◽

Ultrasonic Wave Propagation

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Tidal wave propagation in a coastal aquifer: Effects of leakages through its submarine outlet-capping and offshore roof

Journal of Hydrology ◽

10.1016/j.jhydrol.2007.01.036 ◽

2007 ◽

Vol 337 (3-4) ◽

pp. 249-257 ◽

Cited By ~ 36

Author(s):

Yuqiang Xia ◽

Hailong Li ◽

Michel C. Boufadel ◽

Qiaona Guo ◽

Guohui Li

Keyword(s):

Wave Propagation ◽

Coastal Aquifer ◽

Tidal Wave

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The numerical analysis of fluid-solid interactions for blood flow in arterial structures Part 2: Development of coupled fluid-solid algorithms

Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine ◽

10.1243/0954411981534024 ◽

1998 ◽

Vol 212 (4) ◽

pp. 241-252 ◽

Cited By ~ 32

Author(s):

S Z Zhao ◽

X Y Xu ◽

M W Collins

Keyword(s):

Blood Flow ◽

Wave Propagation ◽

Numerical Analysis ◽

Blood Vessels ◽

Applied Mechanics ◽

Specific Topic ◽

Numerical Techniques ◽

Wall Effects ◽

Clinical Context ◽

Local Flow

In this paper, the authors extend their study of wall mechanics given in Part 1 to the overall problem of fluid-solid interactions in arterial flows. Fluid-solid coupling has become a specific topic in computational methods and applied mechanics. In this review, firstly, the effects of elasticity of blood vessels on wave propagation and local flow patterns in large arteries are discussed. Then, numerical techniques are reviewed together with the alternative coupled methods available in fluid—wall models. Finally, a novel numerical algorithm combining two commercial codes for coupled solid/fluid problems is presented. As a consequence of the present studies, wall effects are now able to be included in predictions of haemodynamics in a clinical context.

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