ORCID Profile
0000-0001-9762-241X
Current Organisation
National Cheng Kung University
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Publisher: Elsevier BV
Date: 10-1988
Publisher: WIT Press
Date: 29-05-2007
DOI: 10.2495/BE070051
Publisher: Elsevier BV
Date: 07-2009
Publisher: Informa UK Limited
Date: 09-1989
Publisher: MDPI AG
Date: 27-05-2022
DOI: 10.3390/JMSE10060738
Abstract: In this study, the problem of surface waves induced by water flow in a flow channel was investigated. The mathematical model based on the potential wave theory was established, and a new analytic solution to the corresponding initial and boundary value problem was proposed. To confirm our analytic solution, the mathematical model was applied to simulate experiments conducted in a flow channel in the laboratory. Using our analytic solution, water surface elevations and flow velocities at certain locations in the channel were compared with experimental results. Comparisons between our analytic solution and experimental results confirmed our theory that litudes and propagating phases are in very close agreement. Our analytic solution can be used to calculate variations in pressure and velocity along the water depth, which are expensive to calibrate and obtain in experiments. Although our analytic solution was established based on linear theory, it is very practical for applications studying the basic properties of surface elevation, velocity, and pressure of the flow field induced by water current both in space and time.
Publisher: Elsevier BV
Date: 1987
Publisher: Elsevier BV
Date: 03-1993
Publisher: Elsevier BV
Date: 07-1997
Publisher: Elsevier BV
Date: 1995
Publisher: Oxford University Press (OUP)
Date: 03-2012
DOI: 10.1017/JMECH.2012.4
Abstract: A series solution based on the mild-slope equation is produced in this study of wave scattering produced by a circular cylindrical island mounted on an axi-symmetrical shoal. The solution is presumed to be a Fourier cosine expansion with variable coefficients in the radial direction on account of the symmetric scattering field, which translates the original 2-D boundary-value problem to a 1-D one in which an ordinary differential equation is in effect treated. Approximations to the coefficients of the governing equation with the Taylor expansions enable the use of the Frobenius method, and consequently the solution is obtained in a combined Fourier and power series. For verification, the present method is mainly compared with Zhu and Zhang's [1] analytical solution of the linearised shallow water equation for a conical shoal, and with a different analytical solution of the mild-slope equation developed by Liu et al. [2] for a paraboloidal shoal. Fine agreements are achieved. The present method is then used to investigate the variation pattern of the wave run-up when the shoal profile varies from conical to paraboloidal, and some interesting phenomena are observed.
Publisher: Informa UK Limited
Date: 05-1990
Publisher: American Society of Civil Engineers (ASCE)
Date: 1994
Publisher: Informa UK Limited
Date: 03-1992
Publisher: Elsevier BV
Date: 08-2007
Publisher: MDPI AG
Date: 09-03-2021
DOI: 10.3390/JMSE9030305
Abstract: This Special Issue concentrates on the problems of interactions between water waves and ocean structures [...]
Publisher: MDPI AG
Date: 25-02-2020
DOI: 10.3390/JMSE8030146
Abstract: In contrast to either considering structures with full degrees of freedom but with wave force on mooring lines neglected or with wave scattering and radiation neglected, in this paper, a new analytic solution is presented for wave interaction with moored structures of full degrees of freedom and with wave forces acting on mooring lines considered. The linear potential wave theory is applied to solve the wave problem. The wave fields are expressed as superposition of scattering and radiation waves. Wave forces acting on the mooring lines are calculated using the Morison equation with relative motions. A coupling formulation among water waves, underwater floating structure, and mooring lines are presented. The principle of energy conservation, as well as numerical results, are used to verify the present solution. With complete considerations of interactions among waves and moored structures, the characteristics of motions of the structure, the wave fields, and the wave forces acting on the mooring lines are investigated.
Publisher: MDPI AG
Date: 26-08-2022
DOI: 10.3390/JMSE10091198
Abstract: Transient characteristics of wave generation in the wave channel can provide unique and important information in contrast to the steady and periodic motion of propagation waves. In this paper, a new analytical solution is proposed for a transient wavemaker problem in the wave channel. The mathematical model of the wavemaker problem is established based on the linear potential wave theory, and a new analytical solution for the corresponding initial and boundary-value problem is presented. The present solution methodology is motivated and developed from old methods shown in literature. The present solution can be mathematically reformulated and shown to be identical to the previous solution using different solution methodology. The present analytical solution is further compared with numerical results and experiments to validate the mathematical model. The present solution is used to calculate the steady state generated wave forms that compare very well with the steady wave theory both in wave length and wave period. The present solution is also used to study unsteady characteristics of wave heights and wave lengths of the leading waves. The present analytical solution methodology can provide an easier approach to obtain the analytical solution for transient wave generation problem in the wave channel.
Publisher: Trans Tech Publications, Ltd.
Date: 02-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.311.67
Abstract: The purpose of this study is to use the software of MATLAB for processing the direct and reflected signals of GPS to monitor altitude of water surface in the water flume, as well as to establish a practicable technique of measuring sea water level. It is because before determining water wave pattern, the feasibility and accuracy of reflected GPS method must be proved. Therefore, there was a field test in the Mid-size wave flume of the Tainan Hydraulics Laboratory, National Cheng Kung University. After improving RGPS positioning procedure, the tranquil water level and the steadily descending of water level observation for one hour were performed. In this research, an integrated GPS receiver that employed direct and reflected GPS signals for the measurement was introduced. Both RHCP and LHCP antennas were employed to simultaneously receive the L1 and L2 carrier phase of direct and reflected signals. After the data analysis of the GPS observation, the position of signal reflection and the water level of the wave were solved. The results of the RGPS, wave gauge, and staff meter were coincided within 0.5cm ~ 1.0 cm. The differences between the reflection heights of this GPS system and the record of wave gauge were almost identical within 90%. It is proved the reflected GPS technique is possible to monitor water surface altitude and determine water wave patterns.
Publisher: Elsevier BV
Date: 07-2002
Publisher: Elsevier BV
Date: 06-2010
Publisher: Elsevier BV
Date: 02-1996
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-1998
Location: No location found
Location: Japan
No related grants have been discovered for Jaw-Fang Lee.