Paper, 'Hydraulic problems on the cross-sections of pipes and channels' by Henry Hennessy

Description

Hennessy writes: 'In that division of hydromechanics which is devoted to the investigation of the flow of liquids through pipes and open channels, the resistance due to the friction of the contained liquid against the sides of the pipes or channels has led to expressions for the velocity as a function of the dimensions and shape of the cross-section commonly designated as the hydraulic mean depth. This quantity is defined as the quotient of the area of the cross-section of the liquid by that part of its perimeter in contact with the pipe or channel. In a full pipe this perimeter is identical with that of the pipe’s cross-section, and in practice this is generally a circle.'

Annotations in pencil and ink. Includes one page of geometrical diagrams.

Subject: Physics / Hydraulics

Received 14 March 1888. Read 19 April 1888.

A version of this paper was published in volume 44 of the Proceedings of the Royal Society as 'Hydraulic problems on the cross-sections of pipes and channels'.

Reference number

PP/12/2

Earliest possible date

1888

Physical description

Ink and graphite pencil on paper

Page extent

11 pages

Format

Manuscript
Diagram