第五章 模擬結果分析與討論
6.2 建議
1. 乾濕點處理技巧中之參考水深 、乾床傳遞速度 與最小乾
床傳遞速度 此三個變數之決定目前仍仰賴數值經驗，
且依計算案例尺度有所不同，此變數之決定是否能歸納出一由物 理參數來決定之方法，後續仍有待研究。
hw DBTV
min_DBTV
2. 二維模擬格網點高程之建構僅由實測斷面資料內差換算，對於斷 面與斷面間實際地形變化仍有所誤差，若能有更精準之河道數值 高程資料，將有助模擬成果精度之提升。
3. 水位上升值、水位上升百分比與糙度關係圖，其中各項變數之相 互關係可否藉由無因次化使其更具通用性，後續仍有許多研究價 值。
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附錄 乾濕點修正方式
( )
I J DBTVNU , =min_ ，NV
( )
I,J =±DBTV ，±方向視上下點 水位而定。else
[ ( ) ( ) ] ( )
w s
s
s I J Z I J Z I J h
Z − + + − ≤
2 ,
1 , 1
, ， 令 、
、
( )
I J hwND , =
( )
I J DBTVNU , =min_ NV
( )
I,J =min_DBTV。(3)若
[
ND(
I,J −1)
.or.ND(
I,J+1) ]
≤hw時，表示上下點只有其中之一為 乾點，或上下點皆為乾點：if
[
Zs(
I,J−1)
−Zs( )
I,J]
>hw 或[
Zs(
I,J+1)
−Zs( )
I,J]
>hw ， 令( )
I J hwND , = 、 NV
( )
I,J =min_DBTV ， 若 右 點 為 濕 點 ，( )
I J DBTVNU , = ；右點為乾點，NU