Site Navigation Menu

15. Curriculum vitae.

Research Interests.
  • Instrumentation and sensors for flow measurement
  • Signal analysis
  • Mathematical modelling of complex flows
 
Research facilities

Contact Information.

les.bradbury@tiscali.co.uk

 


EDUCATION.

B.Sc(Eng) and Ph.D from the Aeronautical Engineering Department, Queen Mary College, University of London (1958 and 1961)

CAREER DETAILS.

SENIOR SCIENTIFIC OFFICER, ROYAL AIRCRAFT ESTABLISHMENT, FARNBOROUGH (1961 - 1965).

Theoretical and experimental studies on the aerodynamics of vertical take-off and landing aircraft.

LECTURER, AERONAUTICS DEPARTMENT, IMPERIAL COLLEGE, UNIVERSITY OF LONDON. (1965 - 1970).

Undergraduate and postgraduate courses in fluid and wave mechanics with particular emphasis on turbulence and experimental methods.

Research into VTOL aerodynamics, structure of turbulent jets, propagation of sound waves through fibrous materials and the ventilation of highway tunnels. This work was supported by research grants from the Ministry of Defence and the Science Research Council.

Vacation consultant – National Physical Laboratory.

Design and construction of a low turbulence, closed return 4 ft x 3 ft low speed wind tunnel.

External examiner for the University of Oxford’s Engineering Department final year undergraduate courses.

READER, MECHANICAL ENGINEERING DEPARTMENT, UNIVERSITY OF SURREY (1970 - 1982.)

Undergraduate and postgraduate courses in fluid mechanics, stress analysis, experimental methods, perturbation techniques, random signal analysis and electronics.

Development of a research group to study various problems in flow measurement and environmental aerodynamics. The group - which was the largest in the department - was supported by research grants from Science and Engineering Research Council, Department of Trade and Industry and the Ministry of Defence.

Design and installation of two low speed blow-down wind tunnels.

Member of the Aeronautical Research Council's committee on Powered lift 1975-1979.

Honorary Senior Principal Scientific Officer at Royal Aircraft Establishment 1972 - 1981.

Approximately 30 lecture courses and seminars at various Universities and Research Establishments.

External examiner for about 20 Ph.D's at the Universities of London, Cambridge, Melbourne and the Royal Military College.

Organiser of industrial short courses in experimental methods in fluid mechanics and electronics.

Member of the organising committee for the bi-annual conferences on Turbulent Shear Flows and Photon Correlation Laser Anemometry.

HEAD OF FLUID MECHANICS, SCHLUMBERGER CAMBRIDGE RESEARCH (1983 -1986)

Schlumberger Cambridge Research was an new research organisation set up on a green field site to study a wide range of problems associated with the exploration and development of oil fields. Schlumberger is the world's most successful oil service company.

Responsibilities included:-

(i)   setting up the department and initiation of a comprehensive applied research programme into a number of topics associated with the exploration and recovery of oil.

(ii)  the establishment of laboratory facilities including a large £2M multiphase flow loop.

(iii)  interacting with the operating companies to formulate the company's long term market strategy.

PROFESSOR & HEAD OF MECHANICAL ENGINEERING, UNIVERSITY OF PLYMOUTH (1986 -1989)

Responsible for all aspects of the operation of the department which consisted of approximately 20 academic staff, 20 technical and administrative staff and typically 200 students.

Established the Advanced Composites Manufacturing Centre to exploit the department's strength in this area. This group's primary activity was running industrial short courses on all aspects of manufacturing in composite materials.

Research into multiphase flow measurement.

CONSULTANT, PELA FLOW INSTRUMENTS (1982 onwards).

Pela Flow Instruments was set up originally to manufacture and market the pulsed wire anemometer that I developed but it was later used also as a vehicle for general consulting work.

Pulsed wire units, probes and software have been supplied to companies, universities and research establishments both in the U.K. and ten other countries.

Consulting work has covered a broad range of topics in industrial fluid mechanics but has also included work in computer networking, software development and industrial training courses. Clients include Schlumberger Cambridge Research, Sedco-Forex, Department of Trade and Industry, Building Research Establishment, British Gas, AB Airlines, Littlewood Stores, Sensa Schlumberger  and a number of universities both in the UK and overseas.

Member of National Measurement System Working Group, Department of Trade and Industry.- 1995-2000.

Research consultant and supervisor to the University of Rio de Janeiro, Brazil.

SELECTED PUBLISHED PAPERS BY TOPIC.

TURBULENT JETS.

Bradbury, L.J.S. (1965) The structure of a self-preserving plane jet. Journal of Fluid Mechanics, Vol. 23, 31-64.

Bradbury, L.J.S. & Riley, J. (1967) The spread of a turbulent plane jet issuing into a parallel moving airstream. Journal of Fluid Mechanics, Vol.27, 381-394.

Bradbury, L.J.S. (1967) Simple expressions for the spread of turbulent jets. Aeronautical Quarterly, Vol.18, 133-142.

Bradbury, L.J.S. (1972) The impact of an axisymmetric jet onto a normal ground board. Aeronautical Quarterly, Vol.23, 141-147.

Bradbury, L.J.S. & Khadem, A.H. (1975) The distortion of a jet by tabs. Journal of Fluid Mechanics, Vol.70, 801-813.

PULSED AND HOT WIRE ANEMOMETRY.

Bradbury, L.J.S. (1969) A pulsed wire technique for velocity measurements in highly turbulent flows. National Physical Laboratory Report 1284.

Bradbury, L.J.S. & Castro, I.P. (1971) A pulsed wire technique for velocity measurements in highly turbulent flows. Journal of Fluid Mechanics, Vol.49, 657-691.

Bradbury, L.J.S. & Castro, I.P. (1972) Some comments on heat transfer laws for fine wires. Journal of Fluid Mechanics, Vol.51, 487-495.

Bradbury, L.J.S. & Ginder, R.B. (1973) A preliminary investigation of a pulsed gauge technique for skin friction measurement in highly turbulent flows. Aeronautical Research Council Fluid Motion Report 4394.

Bradbury, L.J.S. (1976) Measurements with a pulsed wire anemometer and a hot wire anemometer in the turbulent wake of a normal flat plate. Journal of Fluid Mechanics, Vol.77, 473-497.

Gaster, M. & Bradbury, L.J.S. (1976) The measurement of spectra of highly turbulent flows by a randomly triggered pulsed wire anemometer. Journal of Fluid Mechanics, vol.77, 499-509.

Castro, I.P., Dianat, M. & Bradbury, L.J.S. (1989) The pulsed wire skin friction technique. 6th Turbulent Shear Flow Symposium. Springer Verlag.

PHOTON CORRELATION LASER ANEMOMETRY.

Abbiss, J. & Bradbury, L.J.S. (1975) Measurements in an axisymmetric jet with a photon correlation laser Doppler anemometer.  Proceedings of the Laser Doppler Anemometry Symposium, Copenhagen.

Bradbury, L.J.S. (1979) The autocorrelation obtained in laminar flow from a photon correlation laser Doppler anemometer with comments on turbulence measurements in low intensity flows. Physica Scripta, Vol.19, 360-364.

Inman, P.N. & Bradbury, L.J.S. (1983) Examples of the data reduction of photon correlation laser Doppler anemometer correlation functions using Fourier transforms. Photon Correlation Techniques in Fluid Mechanics. Springer Verlag.

JET INTERFERENCE ON VTOL AIRCRAFT.

Bradbury, L.J.S. (1963) Some comments on a simple aerodynamic interference theory for a wing with a single lifting jet. Royal Aircraft Establishment Technical Memorandum 824.

Bradbury, L.J.S. & Wood, M.N. (1965) The static pressure distribution around a circular jet exhausting normally from a plane wall into an airstream. Aeronautical Research Council Current Paper CP 822.

Bradbury, L.J.S. (1982) Some aspects of jet dynamics and their implications for VTOL research. Fluid Dynamics of Jets with Applications to V/STOL. AGARD Current Paper 308.

Acoustic properties of fibrous tangles and their use in loudspeaker enclosures.

Bradbury, L.J.S. (1976) The use of fibrous materials in loudspeaker enclosures. Journal of the Audio Society of America, Vol.24, 162-170.

Bradbury, L.J.S.(1968) Further thoughts on a loudspeaker -the quarter wavelength folded pipe.Hi-Fi News. February pp.180-185.

Bradbury, L.J.S. (1988) Der Einsatz von Fasermaterial in Lausprechengehausen. HiFi Boxen Vol.7.

MULTIPHASE FLOWS.

Kowe, R.,Hunt, J.C.R., Hunt, A., Couet, B. & Bradbury, L.J.S. (1988) The effects of bubbles on the volume fluxes and the pressure gradients in unsteady and non-uniform flow of liquids. International Journal of Multiphase Flow, vol.14, No.5, 587-606.

Samways, A.L., Bradbury, L.J.S. & Bruun, H. (1997) Pressure measurements and convection velocity evaluations in two-phase flow. International Journal of Multiphase Flow, Vol.23, No.6, 1007-1029.

COMMERCIAL AND CONTRACT REPORTS.

Bradbury, L.J.S. & Hunt, A. (1984) Modelling tracer techniques for flow measurement in single and multiphase flows. Schlumberger Report SCR/1984/016/FLM/C

Sobey, I., White, D.B., Bradbury, L.J.S., & Atkinson, C. (1985) Early time analysis of drill stem tests. Schlumberger Report SCR/1985/005/FLM/C

Hunt, A., Brown, P. & Bradbury, L.J.S. (1987) Flow measurement in the drill stem test. Schlumberger Report SCR/1987/002/FLM/C

Bradbury, L.J.S. & Hunt, A. (1989) Three-phase flow measurement systems - a preliminary study. Schlumberger Report SCR/1989/026/FLM/C

Bradbury, L.J.S. (1991) Early kick development in slim holes. Contract Report for Sedco-Forex, Paris.

Bradbury, L.J.S. (1994) Transient pressure testing of buildings. Building Research Establishment Contract Report.

Bradbury, L.J.S. (1995) The measurement of building leakiness using a transient pressure decay technique. Building Research Establishment Contract Report.

Barbosa, J.R.& Bradbury, L.J.S. (1996) Experimental investigations in round bubble plumes. Federal University of Rio de Janeiro Report.

Barbosa, J.R., Bradbury, L.J.S. & Silva Freire, A.P.S. (1996) On the numerical calculation of bubble plumes - including an experimental investigation of its mean properties. SPE/IADC Drilling Conference, Rio de Janeiro.

Bradbury, L.J.S. (1998) A review of pulsed wire anemometry. Transição e Turbulência, 1 Escuda de Primaviera Instituto Militar de Engenharia, Rio de Janeiro, 21-25 September.