Analysis Dimension Of Spillway Toward Velocity Distribution And Flow Discharge For Effectiveness Of Kedurus Boezem
Anna Amalia Misdanik, S.T. (a*), Dr. techn. Umboro Lasminto, S.T., M.Sc. (b)
a) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia
*annaamaliam[at]gmail.com
b) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia
Abstract
Residential area around Kedurus Boezem is often inundated when rains even though topographically the water in this area can flow to boezem. One part contained in a boezem is a spillway that is a lateral structure which functions to connect rivers with boezem area. The existing spillway must be able to increase effectiveness of boezem. Determination of spillway type must consider the geological, topographic, etc. In spillway there is a threshold that is used as a building to raise the water level and determine the water flow rate. Therefore, the selection of the dimensions of the spillway can affect the flow velocity distribution and the flow rate distribution which affects effectiveness of boezem. The research uses two DEM (Digital Elevation Model) data, they are existing DEM and DEM data which is assume the boezem is in full bank condition. Every DEM data simulation is performed using variations in the threshold (A) dimension. The simulation is carried out using HEC-RAS by modeling boezem and inundation area into 2D area so that velocity distribution (V) and flowrate (Q) can be analyzed. At the end of this simulation analysis was carried out to choose the best spillway dimension in effectiveness of Kedurus Boezem.
Keywords: Boezem; Spillway; Flow velocity; Flow rate
Topic: International Symposium of Civil, Environmental, and Infrastructure Engineering