| On the Range of Validity and Accuracy of Boussinesq-Type Models |
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| 引用本文： | 许泰文 杨炳达 曾以帆. On the Range of Validity and Accuracy of Boussinesq-Type Models[J]. 中国海洋工程, 2004, 18(1): 93-106 |
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| 作者姓名： | 许泰文 杨炳达 曾以帆 |
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| 作者单位： | DepartmentofHydraulicandOceanEngineering,NationalChengKungUniversity,Tainan701,China |
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| 摘 要： | In this paper the range of validity and comparison of accuracy of three Boussinesq-type models (Madsen and Sφrensen, 1992; Nwogu, 1993; Wei et al., 1995; referred to as MS, NW and WKGS, respectively) are analyzed and discussed. The governing equations are extended to the second-order approximations to keep higher-order nonlinear terms. Two key parameters ε and μ representing wave nonlinear and frequency dispersive properties are used to demarcate the limit of applicability for these three models. The accuracy of predictions by each model is compared by the relative errors with and without hlgher-order nonlinear terms in Boussinesq equations. A numerical model is developed based on one-dimensional Boussinesq equations and applied to the case of waves propagating over a submerged bar. The performance and feasibility of each model are tested against laboratory data.
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| 关 键 词： | 关键参数 非线性波 精确预报 误差 数字模型 |
On the Range of Validity and Accuracy of Boussinesq-Type Models |
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| HSU Tai-wen ,YANG Bin-da and TSENG I-fan. On the Range of Validity and Accuracy of Boussinesq-Type Models[J]. China Ocean Engineering, 2004, 18(1): 93-106 |
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| Authors: | HSU Tai-wen YANG Bin-da TSENG I-fan |
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| Affiliation: | HSU Tai-wen 1,YANG Bin-da and TSENG I-fan Department of Hydraulic and Ocean Engineering,National Cheng Kung University,Tainan 701,China |
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| Abstract: | |
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| Keywords: | Boussinesq equations nonlinearity dispersion |
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