ICE - Institution of Civil Engineers - Virtual Library

Proc. Instn Ciu. Engrs, Part 2,1981,71, Sept., 879-892 8484 Mathematical simulation of sediment movement in streams R. BETTESS, BSc, PhD* W. R. WHITE, BSc, PhD, MICE* This Paper is concerned with the modelling of sediment movement in streams and makes particular reference to the changes in bed levels and the changes in the composition of the bed materials which occur over periods of several years. The principles on which the model is based are described and comparison made between the performance of the model with field and flume data...

Proc. Instn Civ. Engrs, Part 2, 1985,79, Mar.,33-53 ENGINEERING GROUP MARITIME PAPER 8836 Residual currents inPort Talbot Harboura : mathematical model study R. A. FALCONER, BSc(Eng), MSCE, PhD, DIC, MICE, MASCE* The Paper describes the development and application of a mathematical model to predict the tide induced circulation within a narrow entranced harbour, which experiences exceptipnally large spring tidal ranges. In the model, particular attention has been paid to the mathematical treatment of the convective accelerations and the inclusion of the turbulent Reynolds stresses...

Proc. Instn Ciu. Engrs, Part 1, 1976, 60, Nov., 751-753 HYDROLOGICAL GROUP INFORMAL DISCUSSION Mathematical interpretation of river water quality introduced by J . H. N. Garland, BSc, CChem, MRlC reported by J. A. Naughton, BSc The volume of data that is available on river water quality, even without (as yet) the widespread application of continuous monitoring, means that mathematical techniques (and in many cases electronic data-processing equipment) have to be employed for its interpretation...

7591 DISCUSSION A mathematical model for the analysis of river diversions W. R. WHITE Emeritus Professor A. H. Naylor, Department of Civil Engineering, University College, Swansea The Paper describes an elegant mathematical model adapting step by step calculations to the useof a computer. The alternatives are a physical model or step by step calculation using a slide rule. The discharge characteristics of the diversion under varying upstream and downstream conditions, the reservoir effect and the gap discharge for varying width and upstream and downstream levels can usually be calculated easily...

Proc Instn Cio. Engrs, Part 1,1988,86, June, 513-530 9407 MARITIME ENGINEERING GROUP Mathematical models of wave climate for port design D. Yoo, PhD,* B. A. O'CONNOR, PhD, MICE* D. M. McDOWELL, PhD, F I C E ~ The Paperpresents various advanced mathematical models that can be used for the description of wave climate with regard to port development. The major processes of wave transformation only are considered in this Paper such as refraction, diffraction, reflection and interaction with a current...

A mathematical examinationof urban run-off prediction S. G. NEWTON, BA, R . B. PAINTER, BSc. PhD, DPhil* MICE* A rigorous mathematical examination of the more frequently used methods of predicting urban run-off is given, as a means of assessing their true limitations and of indicating where improvements should be made. Notation cross-sectional area of flow depth of flow q lateral inflow So bottom slope U velocity of flow A h Motivation Annual expenditure on storm sewer systems in the UK exceeds El00 million, and this figure is likely to increase as existing combined systems become inadequate or fail to meet the improved standards for water quality in rivers...

Proc. Instn Ciu. Engrs, Part 2, 1974, 57, Dec., 783-792 7686 DISCUSSION A mathematical examination of urban run-off prediction S. G. NEWTON 81 R. B. PAINTER Dr Newton and Dr Painter A mistake in the simple example given at the end of the Paper was noticed shortly before publication, but unfortunately not in time to rectify the error. 51. In 0 26, line 4, and in 0 41, lines 8 and 10, QL should read Q* The last '...

Proc. Instn Cio. Engrs, Part 2, 1976, 61, June, 297-310 7907 A mathematical sediment transport model for unidirectional flow C. A. FLEMING, BSc(EnQ)* J. N. HUNT? , There are few universally accepted laws concerning the transportation of sediment in fluids. The empirical models, although useful for predicting bulk sediment transport rates, do not offer any description of the physical processes dominating the two-phase motion.Sedimentmay be considered to be transported as bed load and suspended load, the distinctionbetween the two regions being ill defined...