Laboratory study and computer model development related to gross solids' movement in combined sewers

1996 ◽  
Vol 33 (9) ◽  
pp. 39-47 ◽  
Author(s):  
John W. Davies ◽  
Yanli Xu ◽  
David Butler
Keyword(s):  
Computer Simulation ◽  
Pipe Flow ◽  
Model Development ◽  
Simulation Models ◽  
Laboratory Studies ◽  
Pilot Model ◽  
Sewer Systems ◽  
Flow Quality ◽  
Computer Simulation Models ◽  
Theoretical Considerations

Significant problems in sewer systems are caused by gross solids, and there is a strong case for their inclusion in computer simulation models of sewer flow quality. The paper describes a project which considered methods of modelling the movement of gross solids in combined sewers. Laboratory studies provided information on advection and deposition of typical gross solids in part-full pipe flow. Theoretical considerations identified aspects of models for gross solids that should differ from those for dissolved and fine suspended pollutants. The proposed methods for gross solids were incorporated in a pilot model, and their effects on simple simulations were considered.

A review of model development based on sewer sediments research in the UK

1996 ◽  
Vol 33 (9) ◽  
pp. 1-7 ◽  
Author(s):  
Rebecca Gent ◽  
Bob Crabtree ◽  
Richard Ashley
Keyword(s):  
Model Development ◽  
Urban Pollution ◽  
Simulation Models ◽  
Sewer System ◽  
Research Results ◽  
Sewer Systems ◽  
Sediment Deposits ◽  
Flow Quality ◽  
The Uk

A major programme of research into the nature, behaviour and occurrence of sediment deposits associated with sewer systems has been carried out in the UK since 1988. This research has been co-ordinated by the UK water industry's Urban Pollution Management Programme. The main driving force behind this research has been the need to collect fundamental data to support the development of sewer flow quality simulation models. Research results have significantly enhanced knowledge pertaining to sewer sediments and this has proved to be crucial to the development of reliable modelling tools to predict the quality of sewer system discharges. Particular advances have been made in the ability to understand and represent the effects of sewer sediment rheology and the attachment of pollutants to sediments. Many performance limitations of current models, such as MOSQITO and MOUSE TRAP, can be related to the modelling of sewer sediments. User requirements for the next generation of models will only be met if sewer sediments research results are fully utilised and further research can be tailored to meet end user driven modelling requirements. This paper reviews the results and applications of sewer sediments research in the UK and identifies additional research required to support further model development.

scholarly journals Investigating molecular mechanisms of ageing cartilage using computer simulation models

2014 ◽  
Vol 22 ◽  
pp. S57-S58
Author(s):  
W. Hui ◽  
D.A. Young ◽  
A.D. Rowan ◽  
T.E. Cawston ◽  
C.J. Proctor
Keyword(s):  
Computer Simulation ◽  
Molecular Mechanisms ◽  
Simulation Models ◽  
Computer Simulation Models

Development and Use of Bounding Functions in a Forest Growth Model

1993 ◽  
Vol 8 (1) ◽  
pp. 24-27
Author(s):  
K. Leroy Dolph ◽  
Gary E. Dixon
Keyword(s):  
Computer Simulation ◽  
Simulation Models ◽  
Height Growth ◽  
Forest Growth ◽  
Growth And Yield ◽  
Forest Growth Model ◽  
Individual Trees ◽  
Computer Simulation Models ◽  
Forest Growth And Yield

Abstract Erroneous predictions of forest growth and yield may result when computer simulation models use extrapolated data in repeated or long-term projections or if the models are used outside the range of data on which they were built. Bounding functions that limit the predicted diameter and height growth of individual trees to maximum observed values were developed to constrain these erroneous predictions in a forest growth and yield simulator. Similar techniques could be useful for dealing with extrapolated data in other types of simulation models. West. J. Appl. For. 8(1):24-27.

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