Showing papers by "Francois Clemens published in 2005"

TL;DR: The results show that calculated CSO volumes vary considerably due to database errors, especially uncertain dimensions of the catchment area, and event-based calibration of a sewer model enables removal of database errors harmonising model predictions and 'reality'.

TL;DR: The conclusion of the paper is that modelling of suspended solids transport has been and will be one of the challenges in the field of urban drainage modelling.

TL;DR: This paper reports on a series of erosion tests in which sewer sediments from different sewer networks are kept under different environmental conditions and their resistance to erosion is examined.

TL;DR: The preliminary results of the experiments in the multi-phase circuit are described, which describe the description of the gas-water phenomena in wastewater pressure mains with respect to transportation and dynamic hydraulic behaviour and a method to diagnose gas problems.

TL;DR: The ASM1 based sewer model properly describes the changes in dissolved oxygen level in an aerobic sewer reach, and it is concluded that the aerobic transformations in sewer systems are generally not relevant with respect to the influent fluctuations for Dutch wastewater systems.

TL;DR: Using tracer experiments as a model calibration tool, it is shown that a non-negligible amount of dispersion is generated by InfoWorks CS and MOUSE and that it is in fact the numerical dispersion that is calibrated.