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Title: An experimental and theoretical investigation of flow over sharp-crested weirs, with particular reference to aeration of the nappe
Author: Wright, William
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 1952
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Part I: An experimental and theoretical investigation of flow over sharp-crested weirs with particular reference to aeration of the nappe. The purpose of the investigation is to show the effect of aeration of the nappe on the discharge over sharp-crested weirs. In the theoretical part of the investigation, solutions are obtained for the cases of (a) an unaerated weir and (b) an aerated weir using "relaxation methods". In the experimental part of the investigation a number of experiments are carried out on the flow over weirs of various dimensions for which no specific provision for aeration of the nappe is made. Part II: A theoretical and experimental investigation of earth pressure theory as applied to a loaded beam resting on a sand foundation. The investigation is divided into three sections - A theoretical solution of the problem by relaxation methods. It is assumed that the deflection of the beam at any point is directly proportional to the reactive pressure at the point. An experimental investigation of the validity of the assumption made in Section 1. This investigation shows that though the assumption is valid and the deflection is proportional to the pressure, the value of the constant of proportionality is not the same as that obtained by assuming that the sand mass can be considered as a homogeneous elastic solid. An experimental investigation of the actual stress conditions in a loaded sand mass using a pressure cell, and a comparison of the stresses so found with those which would occur in a homogeneous elastic solid which is similarly loaded.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available