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28 results on '"Huang, Wei Po"'

23. On Solving Two-Dimensional Inverse Heat Conduction Problems Using the Multiple Source Meshless Method.

Author

Ku, Cheng-Yu, Xiao, Jing-En, Huang, Wei-Po, Yeih, Weichung, and Liu, Chih-Yu

Subjects
HEAT conduction, DOMAIN decomposition methods, COLLOCATION methods, INVERSE problems
Abstract

Featured Application: The inverse heat conduction problems are often encountered in many engineering fields. In practice, the temperature can be measured only on a portion of the problem boundary. As a result, the information of the remaining boundary is unknown. In this study, we develop the multiple-source meshless method to solve the inverse heat conduction problems. The proposed method can be applied on problems in the doubly-connected domain with remarkably high accuracy, even though the over-specified boundary data are assigned a portion that is less than 1/10 of the overall domain boundary. In this article, a newly developed multiple-source meshless method (MSMM) capable of solving inverse heat conduction problems in two dimensions is presented. Evolved from the collocation Trefftz method (CTM), the MSMM approximates the solution by using many source points through the addition theorem such that the ill-posedness is greatly reduced. The MSMM has the same superiorities as the CTM, such as the boundary discretization only, and is advantageous for solving inverse problems. Several numerical examples are conducted to validate the accuracy of solving inverse heat conduction problems using boundary conditions with different levels of noise. Moreover, the domain decomposition method is adopted for problems in the doubly-connected domain. The results demonstrate that the proposed method may recover the unknown data with remarkably high accuracy, even though the over-specified boundary data are assigned a portion that is less than 1/10 of the overall domain boundary. [ABSTRACT FROM AUTHOR]

Published
2019
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24. Remedies for Coastal Defense due to Coastal Development.

Author

Huang Wei-Po, Tseng I-Fan, and Lin Jaw-Guei

Abstract

Coastal erosion caused by structures due to exploitation is a serious problem for coastal management in Taiwan. These structures disturb the continuity of the original littoral sediment transports, resulting in retreats of the shorelines in the downstream areas. This paper tries to assess the responsibilities of stakeholders regarding coastal defense and attempts to propose adequate remedies. Trend and mechanism analyses were used to assess the effects the coastal exploitation made on the coastal defenses. In the former, historical satellite images, maps, and bathymetnc survey data were used to analyze the evolution of the coastlines. In the latter, we used numerical models to estimate the area where the marine mechanisms were changed by the constructions. Taoyuan. Yunlin and Chiayi coastal sectors were used as case studies. Based on the results, both engineering and non-engineering measures, such as sand bypass and land use control, respectively, were proposed for a sustainable usage of the coast. Using these results, the relative role of the governmental officials and land-users in the area was also investigated. [ABSTRACT FROM AUTHOR]

Published
2016

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