Hydraulic Modelling

Hydraulic models are becoming more widely used and proving to be important tools to enable water companies and local authorities to develop solutions and strategies to deal with current or future drainage issues. Richard Allitt Associates Ltd builds and evaluates hydraulic models for performance optimisation using state of the art analytical techniques. We actively seek to develop and improve our technical ideas whilst striving to maintain the same quality of performance and output. Our hydraulic modelling services include:

Drainage Area Plans and Sewerage Management Plans

Drainage Area Plans and Sewerage Management Plans are important tools in helping Water Companies to manage and maintain their underground assets in a catchment and also to enable accurate estimates to be made of the Levels of Service which they provide. In this way Water Companies are able to identify areas of risk where improvements are required to maintain levels of service. Richard Allitt Associates Ltd has been involved in a number of these studies over the years and examples of this can be found in the following case studies.

Case Study 1 Case Study 2 Case Study 3 Case Study 4

Surface Water Management Plans

Surface Water Management Plans are important decision making tools for local authorities and other stakeholders in identifying the level of flood risk within their given areas across the UK. Richard Allitt Associates Ltd have been involved in a number of these studies in recent years where we have delivered expert advice and modelling skills to assist in the identification of flood risks as described by Sir Michael Pitt in The Pitt Review*. Further details of some of these studies can be found by downloading the following case studies.

Case Study 1 Case Study 2 Case Study 3

1D - 1D Modelling

We have extensive experience working with 1D - 1D modelling solutions using InfoWorks^TM CS. We work on any given scale for the development of new hydraulic models and for the improvement of existing drainage designs. Examples of some of the studies we have undertaken can be found by downloading the following case study.

Case Study 

1D - 2D Modelling

We specialise in 1D - 2D modelling solutions using InfoWorksTM CS 2D, InfoWorks^TM RS 2D and InfoWorksTM ICM for urban drainage systems. We work in partnership with clients to understand their requirements, predict flooding and maximise the performance efficiency of any given model. Examples of some of the studies we have undertaken can be found by downloading the following case studies.

Case Study 1 Case Study 2 

Reservoir Inundation Modelling

Following The Pitt Review the issue of identifying the areas at risk of inundation from reservoirs failing or being overtopped has attracted more attention. We use state of the art modelling techniques to simulate flood inundation for the estimation of damage, flow velocity and area coverage for reservoirs across the UK, irrespective of their size or location. Further details can be found by downloading the following case study.

Case Study 

Breach Analysis

Using hydraulic models it is possible to simulate what the consequences are of a sea or river defence being breached. The results of these simulations can be used to make decisions on how a planned development needs to be modified to reduce the risk to inhabitants or how the defences need to be maintained or raised. Further details can be found by downloading the following case study.

Case Study 

River Modelling

Hydraulic models can be used to gain an understanding of the behaviour of rivers and the consequences of sudden system changes under differing climatic conditions. The same model can then be used for testing proposed flood defence schemes and results can be exported to aid cost benefit analysis so that the most appropriate scheme can be identified. Examples of some of the studies we have undertaken can be found by downloading the following case studies.

Case Study 1 Case Study 2 Case Study 3 

Research and Development

We have been at the forefront of urban drainage technology for over 20 years and work closely with academic and commercial organisations to undertake pioneering research and development work in the field of urban drainage. Examples of some of the studies we have undertaken can be found by downloading the following case studies.

Case Study 1 Case Study 2 Case Study 3

Technical Audits

Hydraulic models are important decision making tools and as such it is important that they are built to high standards and the methodologies used are appropriate to the client's requirements. To ensure that models are "fit for purpose" Richard Allitt Associates Ltd are able to offer independent audits at any stage of the build and verification process. Examples of some of the model audits we have undertaken can be found by downloading the following case studies.

Case Study 1 Case Study 2 

Remote Simulations

Hydraulic models are important decision making tools and as such the ability to run simulations fast can be of great value to the end user. Richard Allitt Associates Ltd are able to offer "rsim" which allows the remote use of their fast simulation machines to undertake fast simulations using InfoWorks^TM ICM. Further details can be found in the following downloadable documents.

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