Summary: Understanding water flow, sediment dynamics and management of risk are vital components of river flow modelling. Such a knowledge requires tools such as river dispersion modelling and contaminant transport in rivers, to predict events, safeguard the environment and inform sustainable industry and government practices. Rivers impact our environment and economic and social activities. TheyContinue reading “How Does River Flow Modelling Help Prevent Environmental Disasters?”
Author Archives: bommannakrishnappan
Coring of cohesive sediment deposits
A device to collect cohesive sediment deposits for testing in the Rotating Annular Flume is described in this blog (https://www.researchgate.net/profile/B_Krishnappan). A photograph of the device is shown below: The cylindrical coring device consists of two sections: The top section, which is made up of plexiglass, is 20 cm in diameter and 5 cm long. ThisContinue reading “Coring of cohesive sediment deposits”
In-situ Erosion Flume
Erosion-resistance of the cohesive sediment beds is governed by the presence of benthic organisms and biofilms in the sediment deposits. Determining the erosion resistance using the laboratory flumes may not account for the presence of benthic organisms and biofilms as they are disrupted when sampling the bed sediment for the flume tests. Therefore, it isContinue reading “In-situ Erosion Flume”
Modelling of Cohesive sediment transport
Mathematical modelling of cohesive sediment transport in rivers is a challenging task because of the large number of governing parameters involved and hence a viable option is a semi-empirical modelling approach. In such an approach, the transport characteristics of cohesive sediments are modelled using empirical parameters and these parameters are measured in the laboratory usingContinue reading “Modelling of Cohesive sediment transport”