Finite element spectral method applied in 3-D nearshore numerical model
Date Issued
2000
Date
2000
Author(s)
DOI
892213E002074
Abstract
The purpose of this research is to
develop the Spectral Element Method.
The trial functions that we chose is
Chebyshev function, and it can deal with
non-period boundary problem. And we use
the concept of the Finite Element Method to
divide computational domain to several subdomains.
It can speed up the convergence
rate and the accuracy .
It can be seen from application that this
method converges very fast and gets high
accurate. The numbers of modes and subdomains
must be chooser so as to achieve
the maximum computational effeciency.
The development of slope land in
Taiwan is rapidly growing, so is the
potential hazard for debris flow. Therefore,
identification of these potential hazard area
will be an important task. The flowbility of
debris flow is a control factor in estimating
the size of these area. This study develops a
numerical model utilizing nonlinear
constitutive law and fluid conservation laws.
Model can be used in field and the values of
all parameters used in the model will be
obtained through simple in situ tests.
Subjects
Finite element spectral method
Numerical simulation
Publisher
臺北市：國立臺灣大學土木工程學系暨研究所
Type
report
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