Application of Free-Surface Immersed-Boundary Lattice Boltzmann Method to Waves Acting on Coastal Structures

Badarch, Ayurzana; Fenton, John D.; Hosoyamada, Tokuzo

doi:10.1061/(asce)hy.1943-7900.0001679

Cited by 8 publications

(2 citation statements)

References 31 publications

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“…For example, the ambient temperature, the pressure on the optical fiber, etc. Once these external factors such as temperature and pressure change, the refractive index and axial direction of the optical fiber will change, and then the grid distance of the optical fiber will also change, resulting in the wavelength change of the 3 Wireless Communications and Mobile Computing reflected light [16]. It is found that the relationship between the change of central wavelength of reflection spectrum and temperature T and strain ε is as follows (2):…”

Section: Sensing Principle Of Fiber Bragg Gratingmentioning

confidence: 99%

Application of Optical Fiber Sensing Technology in Permeability Test of Three-Dimensional Physical Model of Medium and Long-Distance Diversion Tunnel

Zhang

Chen

et al. 2022

Wireless Communications and Mobile Computing

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In order to accurately simulate the dynamic change law of seepage field during construction, this paper proposes the application of optical fiber sensing technology in the permeability test of three-dimensional physical model of medium and long-distance headrace tunnel. This paper introduces the principle of optical fiber sensing, analyzes and compares the application advantages of optical fiber and general electrical signal sensing in the safety monitoring of long-distance diversion tunnel. Taking the safety monitoring of a 16# long tunnel of a diversion project as an example, the selection of monitoring sections, monitoring items, and the layout and networking of monitoring instruments are studied. In addition, combined with the tunnel project, the physical simulation of the construction process of the deep buried headrace tunnel under high seepage pressure is carried out, and the water pressure automatic control water supply system and the discrete flower tube seepage generation system are designed and manufactured to realize the high simulation of the seepage field. The seepage and evolution law in the surrounding rock of headrace tunnel during dynamic construction are calculated and analyzed. The test results show that the maximum external water pressure of the headrace tunnel is 15 MPa, which is equivalent to 1500 m head pressure, and the similar scale of head pressure is 100. Therefore, taking 15 m constant head water supply pressure for simulation calculation, the excavation of the tunnel is 120 cm, and the two-dimensional seepage of the vertical section of Z = 91 cm . The seepage flow of the two sides of the tunnel is large, and the contour of the hydraulic gradient is dense. The coordinates are 0.7 m, 2.090 m, and 0.9 m. This point in the original rock mass is located at the same elevation point of the four headrace tunnels and directly below the model exploratory tunnel. The head pressure is 1.40 m, and the corresponding prototype point pressure head is 140 M. During construction, such a high external water pressure is a great safety hazard. Conclusion. The test conclusion provides a theoretical basis for the seepage prevention construction technology design of the headrace tunnel and is of great significance to the long-term stability, safety evaluation, and prediction of the headrace tunnel.

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Section: Sensing Principle Of Fiber Bragg Gratingmentioning

confidence: 99%

Application of Optical Fiber Sensing Technology in Permeability Test of Three-Dimensional Physical Model of Medium and Long-Distance Diversion Tunnel

Zhang

Chen

et al. 2022

Wireless Communications and Mobile Computing

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“…To date, the behavior of coastal structures under wave actions has been the issue of different experimental [13][14][15], analytical [16][17][18][19], and numerical studies [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Wave Reflection from Sloped Impermeable Seawalls Using the SPH Method: Case Study of Chabahar Port

Aghaei

Arasteh

Lari

et al. 2021

Advances in Civil Engineering

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In this research, a comprehensive study is performed to investigate the interaction of regular waves with the impermeable seawall of the Chabahar port. First, a MIKE 21 SW model is used to transform the deep-water wave data to the nearshore zone. Then, the interaction of waves with the seawall is simulated using a well-known numerical smoothed particle hydrodynamics model named DualSPHysics. After validating the numerical results with the experimental data, a parametric study is performed to evaluate the effects of the wave height, wave period, and the slope of the seawall on the water level fluctuations and the wave reflection coefficient. The results showed that increasing the wave height slightly decreases the reflection coefficient. Meanwhile, a direct relationship was found between the wave height and the water level fluctuations near the wall. Generally, increasing the wave period resulted in higher reflection coefficients and water level fluctuations. Both the reflection coefficient and the water level fluctuations are greatly dependent on the slope of the seawall. Steeper slopes resulted in higher reflection coefficients and lower water level fluctuations near the seawall.

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A numerical method of combined SPF-MEM-LBM on the rockfall-induced surge and its application

et al. 2021

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Application of Free-Surface Immersed-Boundary Lattice Boltzmann Method to Waves Acting on Coastal Structures

Cited by 8 publications

References 31 publications

Application of Optical Fiber Sensing Technology in Permeability Test of Three-Dimensional Physical Model of Medium and Long-Distance Diversion Tunnel

Application of Optical Fiber Sensing Technology in Permeability Test of Three-Dimensional Physical Model of Medium and Long-Distance Diversion Tunnel

Numerical Modeling of Wave Reflection from Sloped Impermeable Seawalls Using the SPH Method: Case Study of Chabahar Port

A numerical method of combined SPF-MEM-LBM on the rockfall-induced surge and its application

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