10.4122/1.1000001618
Sreeja, P.
P.
Sreeja
Gupta, K.
K.
Gupta
Mark, O.
O.
Mark
Dynamic modeling of detention tanks for flood control in urban drainage systems in developing countries
DTU Library, Technical University of Denmark (DTU)
2005
Conference full text
Urban drainage
control
impulse response
step response
frequency response
Indian Institute Of Technology Bombay, Department Of Civil Engineering,
Water, DHI-Institute For
DHI-Institute For
Water
2005
en
10.4122/1.1000001617
application/pdf
ABSTRACT Increasing urbanization and high population density have resulted in an increase in the impervious areas in the cities. This results in flooding and overloading of existing drainage systems. Implementing structural measures for controlling urban flooding are extremely difficult due to the space constraints in densely populated cities in developing countries. An alternative cost effective solution can be achieved by implementing a control strategy for the existing control structures at different locations in the drainage network. In this direction, a detention tank in the drainage system can be effectively used for storing excess water during high intensity rainfall and subsequently releasing it to the downstream drainage channel using a flow control mechanism, to optimize the capacity of the drainage system. With this in view, an effort has been made to develop a dynamic numerical model, which incorporates the influence of controller units for the operation of gates of detention tank in order to control the flow. The response characteristics of the system in time and frequency domain have been discussed in this paper. The validity of the developed model has been demonstrated by simulating it for a catchment near Mumbai, India. The results were analyzed to emphasis its importance in field application.