SIPSON – Simulation of Interaction between Pipe flow and Surface Overland flow in Networks

Abstract

The new simulation model, named SIPSON, based on the Preissmann finite difference method and the conjugate gradient method, is presented in the paper. This model simulates conditions when the hydraulic capacity of a sewer system is exceeded, pipe flow is pressurized, the water flows out from the piped system to the streets, and the inlets cannot capture all the runoff. In the mathematical model, buried structures and pipelines, together with surface channels, make a horizontally and vertically looped network involving a complex interaction of flows. In this paper, special internal boundary conditions related to equivalent inlets are discussed. Procedures are described for the simulation of manhole cover loss, basement flooding, the representation of street geometry, and the distribution of runoff hydrographs between surface and underground networks. All these procedures are built into the simulation model. Relevant issues are illustrated on a set of examples, focusing on specific parameters and comparison with field measurements of flooding of the Motilal ki Chal catchment (Indore, India). Satisfactory agreement of observed and simulated hydrographs and maximum surface flooding levels is obtained. It is concluded that the presented approach is an improvement compared to the standard "virtual reservoir" approach commonly applied in most of the models.

Validation of 2D shock capturing flood models around a surcharging manhole

“…Fully-coupled approaches involve implicit coupling, of a 1D or 2D surface flow model, with a 1D unsteady pipe flow solver (Chen et al 2015, Djordjević et al 2005, Lee et al 2013, Martins et al 2016, Seyoum et al 2012. In many of these works, sewer overflow is accounted for using only one computational cell, and for real-site applications (Martins et al 2016 conditions to produce systematic increase in the sewer surcharge rate into a shallow flow over a floodplain.…”

Effects of Using Different Sources of Remote Sensing and Geographic Information System Data on Urban Stormwater 2D–1D Modeling

“…Several research models [9][10][11][12] and commercial tools [13,14] have been developed and applied to various case studies. However, current applications of urban 2D/1D models focus on applying increasingly detailed remote sensing data [1,2].…”

Semi- vs. Fully-Distributed Urban Stormwater Models: Model Set Up and Comparison with Two Real Case Studies

“…At first, 1D1D models were significantly improved and opened the discussion about overland flow modeling [5][6][7][8][9]. In the late 2000s, 1D2D models become more popular with the development of technology and the increase in the computer power [10][11][12][13].…”