Dr S B Chin
BSc, PhD, CEng, MIMechE
Lecturer in Mechanical Engineering
Admissions Tutor (International)
Department of Mechanical Engineering
Sir Frederick Mappin Building
Mappin Street
Sheffield
S1 3JD
UK
Telephone: +44(0)114 2227735
Fax: +44(0)114 2227890
email : s.b.chin@sheffield.ac.uk
Areas of Research
Dr Chin's key research areas concern the application of Computational Fluid Dynamics techniques and its experimental validation. Current work includes thixotropic flow of semi-solid alloys, transient and steady state flow in an electrically strictive driven poppet valve, entrainment process in supersonic flow ejector, mathematical and numerical modelling of industrial processes, semi-solid forming and metal casting. A new research area is the study of strongly coupled fluid-structure interaction applicable to physiological flows.
Dr Chin's research activities concentrate on the application of CFD techniques and experimental validation to engineering and physiological flow problems. One such example is that of thixotropic flow of semi-solid alloys into a die. Millions of automotive components are being produced annually by thixoforming (the shaping of metal components in the semi-solid state). The project aims to establish general rheological equations to characterise the flow behaviour of such alloys, which then can be included in a CFD program to predict the mode of die filling in thixoforming. Novel rheological experiments and numerical techniques for the solution of thixotropic flow are being developed.
Another aspect of Wen Chin's work is research into supersonic ejectors. Steam ejectors are cheaper to operate than a mechanical pump when a source of waste heat is available. Low grade waste heat has become increasingly available, e.g. from district heating plants or incinerators, and it is the opportune moment to re-introduce the use of supersonic steam ejectors in industrial refrigeration and air conditioning applications. A CFD program is used to investigate the mixing processes between supersonic and subsonic streams with the aim of improving the efficiency of the ejectors.
Teaching
Dr Chin currently teaches modules on Advanced Fluid Mechanics (MEC311) and Computational Fluid Dynamics (MEC404)
Recent Publications:
- Sports ball aerodynamics: A numerical study of the erratic motion of soccer balls,
Barber, S., Chin, S. B., and Carré, M. J. (2009),
Computers and Fluids, 38(6), pp. 1091-1100.
Online (journal subscription required)
- Non-Newtonian bile flow in elastic cystic duct: One- and three-dimensional modeling,
Li, W. G., Luo, X. Y., Chin, S. B., Hill, N. A., Johnson, A. G., and Bird, N. C. (2008),
Annals of Biomedical Engineering, 36(11), pp. 1893-1908.
Online (journal subscription required)
- Correlation of mechanical factors and gallbladder pain,
Li, W. G., Luo, X. Y., Hill, N. A., Smythe, A., Chin, S. B., Johnson, A. G., and Bird, N. (2008),
Computational and Mathematical Methods in Medicine, 9(1), pp. 27-45.
Online (journal subscription required)
- From cystic duct to static mixer: A serendipitous journey via flow visualization,
Al-Atabi, M., Chin, S. B., Beck, S. B. M., and Boucher, R. F. (2007),
Journal of Visualization, 10(2), pp. 141-144. (journal subscription required)
Online (open access)
- One-dimensional models of the human biliary system,
Li, W. G., Luo, X. Y., Johnson, A. G., Hill, N. A., Bird, N., and Chin, S. B. (2007),
Journal of Biomechanical Engineering, 129(2), pp. 164-173.
Online (journal subscription required)
- Pressure drop in laminar and turbulent flows in circular pipe with baffles - An experimental and analytical study,
Al-Atabi, M., Chin, S. B., Al-Zuhair, S., and Luo, X. Y. (2006),
International Journal of Fluid Mechanics Research, 33(4), pp. 303-319.
Online (journal subscription required)
- Flow in noncircular ducts with internal corner ribs,
Al-Atabi, M., Chin, S. B., and Luo, X. Y. (2006),
Journal of Flow Visualization and Image Processing, 13(3), pp. 203-216.
Online (journal subscription required)
- Investigation of the functional three-dimensional anatomy of the human cystic duct: A single helix?,
Bird, N. C., Ooi, R. C., Luo, X. Y., Chin, S. B., and Johnson, A. G. (2006),
Clinical Anatomy, 19(6), pp. 528-534.
Online (journal subscription required)
- Performance of the piezo-poppet valve. Part 2,
Wong, A. P., Bullough, W. A., and Chin, S. B. (2006),
Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering, 220(6), pp. 453-571.
Online (journal subscription required)
- Performance of the piezo-poppet valve. Part 1,
Wong, A. P., Bullough, W. A., Chin, S. B., and Chua, Y. S. (2006),
Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering, 220(6), pp. 439-451.
Online (journal subscription required)
- Flow structure in circular tubes with segmental baffles,
Al-Atabi, M., Chin, S. B., and Luo, X. Y. (2005),
Journal of Flow Visualization and Image Processing, 12(3), pp. 301-311.
Online (journal subscription required)
- Aerodynamics of spinning and non-spinning tennis balls,
Goodwill, S. R., Chin, S. B., and Haake, S. J. (2004),
Journal of Wind Engineering and Industrial Aerodynamics, 92(11), pp. 935-958.
Online (journal subscription required)
- The flow of bile in the human cystic duct,
Ooi, R. C., Luo, X. Y., Chin, S. B., Johnson, A. G., and Bird, N. C. (2004),
Journal of Biomechanics, 37(12), pp. 1913-1922.
Online (journal subscription required)