Research Article

Hydrodynamic Modeling of a Tropical Tidal River Using the Dynamic Estuary Model (DYNHYD5): A Case Study in Sibu Laut River, Sarawak, Malaysia

Table 2

Summary of changes (%) of channel flow and mean depth in sensitivity analysis.

ChannelM. coeff. 0.015M. coeff. 0.055M. coeff. 0.075−50% inflow+50% inflow−50% SB+50% SB
FlowDepthFlowDepthFlowDepthFlowDepthFlowDepthFlowDepthFlowDepth

1−0.3%−0.2%0.0%0.4%0.0%0.9%−50.1%−0.2%49.9%0.2%0.1%−43.6%0.6%44.3%
20.1%−0.2%−0.1%0.3%−0.1%0.8%−50.0%−0.1%49.9%0.2%−0.1%−42.0%−0.6%42.8%
30.2%−0.4%−0.3%−0.1%−0.3%0.0%−50.0%−0.3%49.8%−0.2%−0.3%−50.1%−2.2%49.0%
40.3%−0.1%−0.4%0.2%−0.4%0.5%−49.9%−0.1%49.7%0.1%0.1%−44.2%−4.6%44.5%
50.0%−0.1%0.0%0.1%−0.4%−0.2%−50.0%0.0%49.9%−0.2%−26.2%−73.2%−0.4%66.8%
60.2%−0.6%−0.3%0.1%−0.4%0.7%−49.9%−0.5%49.8%−0.1%−12.1%−55.4%−3.6%55.8%
70.7%−0.1%−0.5%0.3%−0.5%0.6%−49.9%−0.1%49.6%0.2%−8.4%−26.8%−5.2%27.4%
8−0.4%−0.2%0.3%0.3%0.3%0.7%−50.1%−0.1%50.2%0.2%4.4%−28.3%3.3%28.9%
9−0.5%−0.2%0.3%0.3%0.3%0.7%−50.1%−0.1%50.2%0.2%3.4%−32.7%3.1%33.4%
10−0.7%−0.1%0.4%0.2%0.4%0.4%−50.1%−0.1%50.3%0.1%4.7%−33.1%4.8%33.6%
11−0.1%−0.2%0.0%0.3%0.0%0.8%−50.0%−0.1%50.0%0.1%−15.0%−97.8%0.2%114.9%
12−0.2%−6.1%0.2%6.5%0.2%13.0%−50.2%−5.6%50.7%−1.1%0.4%−38.7%0.9%216.2%
13−0.1%−0.2%0.0%0.4%0.0%0.9%−50.1%−0.1%50.3%0.1%−11.0%−96.8%0.6%110.5%
140.1%−0.1%0.0%0.2%−0.1%0.4%−50.0%0.0%50.2%0.1%−5.1%−60.6%0.7%61.4%
15−0.5%0.0%0.3%0.1%0.3%0.2%−50.1%0.0%50.2%0.0%1.2%−32.3%3.6%32.7%

M. coeff., Manning’s coefficient; SB  seaward boundary.