William John Macquorn Rankine (1820-1872), engineer, polymath, educator and researcher. Pioneer of thermodynamics.
Rankine was a founding contributor, with Rudolf Clausius and William Thomson (1st Baron Kelvin), to the “pure” science of thermodynamics. Rankine developed a complete theory of the steam engine and indeed of all heat engines. The application of the doctrine, that ‘heat and work are convertible,’ to the discovery of new relations among the properties of bodies was made about the same time by all three. Thomson cleared the way by his account of Carnot’s work on the ‘Motive Power of Heat,’ and following James Joule pointed out the error of Carnot’s assumption that heat is a substance and therefore indestructible. Rankine in 1850, and Clausius in the same year, showed in very different ways the nature of the further modifications which Carnot’s theory required. Thomson in 1851 put the foundations of the theory in the form they have since retained.
Rankine’s ideas on thermodynamics regarded energy as being classified into two kinds, kinetic and potential, and his thermodynamic theory was developed by considering the transformation of one into the other. He began with the hypothesis that matter was constituted by molecular vortices (without considering the cyclic process) and obtained the quantities “pressure”, “specific heat”, etc., from that consideration. His classification of energy was similar to, but not exactly the same as, that of Clausius. Both Rankine and Clausius approached the second law of thermodynamics from the point of view of the transformation from one kind of energy to the other. But whereas Clausius considered the conversion between heat and work and the flow of heat from high to low temperature in a cyclic process, Rankine concentrated on the change from kinetic (molecular) to potential energies, and related this change to heat flow by use of his “heat-potential” function.
The entropy function was defined by Rankine and later extended by Maxwell. Rankine identified the phenomenon now known as “fatigue” in the metal of railway axles, wrote on earth pressures in soil mechanics, and the stability of walls. He also developed methods to solve the force distribution in frame structures and worked on hydrodynamics and the design of ships.
Rankine was one of main developers of systematic programmes of training for engineers. On his arrival in Glasgow University engineering was part of the Faculty of Arts, but was not recognised as a subject qualifying for graduation in Arts. By the time of his death a B.Sc. degree was introduced. Rankine emphasised the mutual dependence and harmony between sound theory and good practice, and he was responsible for establishing the University’s famous sandwich courses in co-operation with leading industrialists in Scotland. Rankine worked closely with Clyde shipbuilders, especially his friend and life-longCOLLABORATOR James Robert Napier to make naval architecture into an engineering science. He was a founding member and first President of the Institution of Engineers & Shipbuilders in Scotland in 1857.
|Born 5th July in Edinburgh, Scotland, the son of David Rankine, civil engineer||1820|
|8||Attended Ayr Academy||1828|
|10||Attended Glasgow High School||1830|
|14||Attended Scottish Military and Naval Academy||1834|
|16-18||Attended classes at University of Edinburgh||1836-38|
|18||Gold Medal for An Essay on the Undulatory Theory of Light||1838|
|18||Pupil of civil engineer John Benjamin MacNeill||1838|
|22||Associate of Institution of Civil Engineers on 7th March||1843|
|24||Employed under Locke and Errington on Caledonian Railway projects||1844|
|28||Fellow of the Royal Society of Edinburgh on 7th January||1849|
|30||Published On the mechanical action of heat, especially in gases and vapours||1850|
|31||Awarded Keith Prize by Royal Society of Edinburgh||1851-53|
|33||Fellow of the Royal Society of London||1853|
|34||Awarded Keith Prize by the Royal Society of Edinburgh||1854|
|35||Regius Professor of civil engineering and mechanics at Glasgow University||1855|
|37||First President of Institution of Engineers and Shipbuilders in Scotland||1857|
|37||Awarded Doctor of Laws, Trinity College, Dublin||1857|
|38||Published Applied Mechanics||1858|
|39||Published The Steam Engine and other Prime Movers||1859|
|Commissioned captain in Glasgow University Corps of Rifle Volunteers||1859|
|40||Senior major in Glasgow University Corps of Rifle Volunteers||1860|
|42||Published Civil Engineering||1862|
|43||Elected to American Academy of Arts and Sciences||1863|
|46||Published Shipbuilding, Theoretical and Practical||1866|
|48||Elected to Royal Swedish Academy of Sciences||1863|
|49||Published Machinery and Millwork||1869|
|Appointed to Board of Enquiry into sinking of HMS Captain||1869|
|51||Vice President of Royal Society of Edinburgh||1871|
|52||Died on 24th December at 8 Albion Crescent, Dowanhill, Glasgow||1872|
|52||Buried on 28th December at Sighthill Cemetery, Glasgow, after a service in Glasgow University chapel||1872|
His works on the steam engine, machinery, shipbuilding, applied mechanics, etc., became standard textbooks; and he did much for the new science of themodynamics and the theories of elasticity and of waves. The thermodynamic cycle for the analysis of the maximum efficiency of a heat-engine or heat pump using condensable vapour as working fluid is still called the Rankine Cycle. The Rankine Theory on earth pressure continues to be featured in geotechnical text books. His manuals of engineering science and practice continue to influence engineering education. They were republished for many decades after their launch in the 1850s and 1860s. He published several hundred papers and notes on science and engineering topics, from 1840 onwards. The Institution of Engineers and Shipbuilders in Scotland, which he co-founded, continues to thrive.
Other Selected Publications:
On the causes of the unexpected breakage of the journals of railway axles, and on the means of preventing such accidents by observing the law of continuity in their construction. Minutes of the Proceedings of the Institution of Civil Engineers. Vol.2, pp.105-107 (1843).
Description of a method of laying down railway curves on the ground Minutes of the Proceedings of the Institution of Civil Engineers. Vol.2, pp.108-111 (1843).
On the Means of improving the Water Supply of Glasgow. Glasgow: 1852.
On the mechanical principles of the actions of propellers. Naval Architecture Transactions. Vol.6: 13-39. 1865.
Report on the design and construction of masonry dams. The Engineer. Vol.33, pp.1-2 (5 January 1872).
Songs and Fables. London: MacMillan. 1874.
Ten British Physicists of the Nineteenth Century Alexander MacFarlane. New York. 1919
Investigation, appraisal and re-use of a cast-iron structural frame. MN Bussell and MJ Robinson. The Structural Engineer, Vol.76, no.3, pp.37-42 (February 1998)
Biographical Dictionary of Civil Engineers, Volume 2: 1830-1890. Peter Cross-Rudkin and Mike Chrimes (eds.) London: The Institution of Civil Engineers. 2008.
W.J.M. Rankine and the rise of thermodynamics. K Hutchison. British Journal for the History of Science, Vol.14, no.46, pp.1-26 (1981).
Fatigue testing instruments Robert C. McWilliam in Instruments of Science: an historical encyclopedia. R. Bud and D J Warner (eds.) New York: Garland for the Science Museum and the Smithsonian. 1998.
Fortuna Domus. A series of Lectures delivered in the University of Glasgow in commemoration of the Fifth Centenary of its foundation. J B Neilson (ed.) Glasgow: Morgan & Scott for the University of Glasgow, 1952.
W.J.M. Rankine: a commemorative lecture. R V Southwell. Proceedings of the Institution of Civil Engineers, Part 1. Vol.5, pp.177-193. (1956).
Rankine: his life and times H B Sutherland. London: The Institution of Civil Engineers. 1973.
Professor William John Macquorn Rankine. H B Sutherland. Proceedings of the Institution of Civil Engineers, Vol.132, no.4, pp.181-187. (November 1999).
History of the Strength of Materials. S P Timoshenko. New York: McGraw-Hill. 1953 (reprinted New York: Dover. 1982).
Oxford Dictionary of National Biography entry (full text available to subscribers and UK library members)
The Rankine Absolute Fahrenheit Scale.
Rankine, a small impact crater near the eastern limb of the Moon.
The Rankine Lecture is hosted by the British Geotechnical Association of the Insitution of Civil Engineers. It is widely viewed as the most prestigious invited lecture in geotechnics.
The Rankine Hugoniot equation for propagation of shock waves governs the behaviour of shock waves normal to the oncoming flow.
The Organic Rankine Cycle was derived to use organic, high molecular mass fluid with a liquid vapour phase-change occurring at a lower temperature than the water-stem phase change. It was exhibited in 1961 and enables Rankine Cycle heat recovery from low temperature sources such as biomass, industrial waste heat, geothermal heat, solar ponds.
The method for setting out circular curves by chaining and angles at the circumference fully exploited the accuracy of the theodolite is called the Rankine Method (although it had been derived concurrently by others engaged in railway surveying).
A Rankine Body is a concept used in computing the flow of liquid around a body or surface.
The Rankine Gordon formula is still applicable to cast iron columns.
A Rankine Vortex model is a mathematical approach to describing the velocity profile through vortices in real viscous fluids.
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