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A ROLE FOR COMPUTATIONAL HEAT TRANSFER (CHT) IN ENGINEERING EDUCATION

卷 4, 册 6, 2012, pp. 477-484
DOI: 10.1615/ComputThermalScien.2012006430
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摘要

Traditional engineering education has two main aspects, theoretical and experimental; of which the first also has two parts: quantitative formulation of the relevant general laws of science; and deduction of their implications, in particular, practical circumstances. The deductions are conducted by mathematical methods in which differential calculus plays a large part. Students lacking proficiency in such methods are not admitted to engineering schools. Differential calculus applies the laws of science to infinitesimal volumes, and it expresses its deductions in terms of pretabulated functions. Only rarely does reality conform to them well enough for use in design, without large safety factors. Computer-based analysis applies the laws to finite volumes with fewer oversimplifications. Its deductions conform to reality more closely; so safety factors can be closer to unity; with great economic advantage. It is argued that these facts should be reflected in both the admission procedures and the teaching methods of engineering education. In respect to the second, detailed suggestions are made, exemplified by application to heat-exchanger theory.

参考文献
  1. Kays, W. and London, A. L. , Compact Heat Exchangers.

  2. Patankar, S. V. and Spalding, D. B. , Calculation procedure for transient and steady state behaviour of shell and tube heat exchangers, in 5th ICHMT seminar.

  3. Spalding, D. B. , Teaching heat transfer and fluid flow by means of CFD.

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