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A Study on Channel Flood Routing Using Nonlinear Regression Equation for the Travel Time
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  • Journal title : Journal of Wetlands Research
  • Volume 18, Issue 2,  2016, pp.148-153
  • Publisher : Korean Wetlands Society
  • DOI : 10.17663/JWR.2016.18.2.148
 Title & Authors
A Study on Channel Flood Routing Using Nonlinear Regression Equation for the Travel Time
Kim, Sang Ho; Lee, Chang Hee;
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 Abstract
Hydraulic and hydrological flood routing methods are commonly used to analyze temporal and spatial flood influences of flood wave through a river reach. Hydrological flood routing method has relatively more simple and reasonable performance accuracy compared to the hydraulic method. Storage constant used in Muskingum method widely applied in hydrological flood routing is very similar to the travel time. Focusing on this point, in this study, we estimate the travel time from HEC-RAS results to estimate storage constant, and develop a non-linear regression equation for the travel time using reach length, channel slope, and discharge. The estimated flow by Muskingum model with storage constant of nonlinear equation is compared with the flow calculated by applying the HEC-RAS 1-D unsteady flow simulation. In addition, this study examines the effect on the weighting factor changes and interval reach divisions; peak discharge increases with the bigger weighting factor, and RMSE decreases with the fragmented division.
 Keywords
Channel Flood Routing;Muskingum Model;Travel Time;Storage Constant;
 Language
Korean
 Cited by
 References
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