Hydraulic modelling enables accurate estimation of water levels and flood extents for open watercourses and closed conduit drains, water pressures in pipelines and distribution networks, and dispersion of pollutants in an aquatic environment. Detailed and site-specific modelling can be used to refine designs and materials, saving money for the Client, and to assess risk parameters, such as flood flow velocities, water levels and pipeline zone pressures, to protect assets, operators and the general public.
CARES has been a leading provider of hydraulic modelling services, utilising state-of-the-art hydraulic modelling technology to model flow velocities, depths and dispersion into the environment in navigation channels in West Africa. We provide world class modelling services through all stages, from performing the scoping study, data collection and surveys, through to model building and verification of the developed models. We create customised model systems, in varying degrees of complexity and size, to allow our designers and Clients to explore and identify hydraulic constraints, test and substantiate engineering concepts and develop feasible and cost effective solutions.
Our modelling procedures are regularly reviewed in light of current research and development and we have access to licensed users for several third party models, to ensure we follow international best practice and use the best model to fit the project, adjusting the model to match the situation, rather than implifying the problem to fit an existing model.
For model builds and verification, CARES sources data from remote sensing and Geographic Information Systems (GIS), ground surveys and anecdotal
information supplemented by our experts, Clients, operations staff and the general public. To ensure that a model accurately represents the reality of a situation, it can typically be verified against a short term flow survey, comparing model results with actual flow depths, and making adjustments to the model to establish an acceptable correlation. Our open channel and pipeline modelling services include:
- Hydraulic computer model development, calibration and simulation
- Hydraulic structures design, analysis and modelling
- Analysis and certification of pipeline controls and measurement systems
- Flow measurement and hydraulic field services
- Open channel velocity profiling
- Third party witness testing and calibration
- Flow meter installations
- Pump cavitation damage inspections
- Dam breach analysis and reservoir inundation modelling
- Surface water and sewerage management planning
- Drainage area plans.
If necessary, we can also commission, manage and analyse physical and numerical modelling and testing undertaken by specialised independent laboratories.
CARES experience of hydraulic analysis of pumps and distribution networks also includes the modelling of surge, to fully integrate the impacts of transient pressures and system operations into the overall design. Surge pressure transients are rapid changes in fluid motion in pipelines, also known as water hammer, which can lead to operational problems and catastrophic failure. Consideration of surge, in conjunction with system operations, is a key element in the design of pipelines to ensure safety and reliability, avoiding the movement of thrust blocks, entrainment of air and pollutants, and more serious risks of bursts or collapse of thin walled materials. When fully understood, the impacts of surge can be minimised and the assets protected by integrating surge protection measures into the design and by setting operations procedures (e.g. surge vessels/tanks/shafts, pressure and air release valves, and pump and motor set inertia and valve closure rate limitations).
Our clients include governmental bodies, municipalities, port authorities, contractors, investors and industrial companies. From specialist advisory services and expert opinion, to preliminary reviews, detailed modelling, feasibility study and detailed design, our proven capability means we can offer added value to our Clients in the water, wastewater and oil and gas sectors, wherever they or their projects are based.