Flow Analysis In A Water Reservoir Using
A Combined Boundary Element And
Weighted Finite Difference Method
Author(s)
M. Kanoh, N. Nakamura & T. Kuroki
Abstract
In an earlier study, the boundary element method (BEM) and the weighted finite
difference method (WFDM) were combined to analyze wave motion and water
flow (Kanoh et al. [1]). In this paper, we determine the methodology of the
combined method and apply it to the flow analysis in the water reservoir. In
order to apply the combined method described in the problem, the analytical
region is divided into two sub-domains: (1) The first is an upper-flow domain, in
which the moving boundary technique and the intricate boundary conditions are
managed by a BEM (Kanoh et al. [1]); (2) The second is a lower-flow domain, in
which the WFDM provides an accurate solution for the delicate water motion, in
the case where the concentration of dissolved oxygen (DO) is managed to kaizen
or its value is enhanced using DO-supplying machines improved by our research
group. With reference to the velocity vectors of the water flow and free-surface
motion observed in a water reservoir, the effect and accuracy of the alternative
hybrid method are evaluated.
Keywords: combined method, flow in water reservoir, weighted finite difference
method, observed velocity in water reservoir, temperature melalimnion.
1 Introduction
In relatively deep-water reservoirs, a so-called temperature melalimnion is often
observed in summer. Namely, along the melalimnion, the water temperature
changes significantly, and, across the melalimnion, less water mixing occurs.
Below the melalimnion, the water temperature remains relatively constant. Using
Keywords
combined method, flow in water reservoir, weighted finite difference
method, observed velocity in water reservoir, temperature melalimnion
Related Book
Other papers in this volume
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