Actuator disc and radial equilibrium theories have been the subject of intensive theoretical and experimental investigation in recent years. This thesis describes an examination, by means of a resin twice network analogue, of actuator disc solutions of the flow for three low-speed compressors. These solutions are compared with the radial equilibrium solutions and with aerodynamic measurements obtained from the compressors. For one of these, results of a previous worker were used, for the second, the author carried out tests on an existing compressor, and for the third, a new compressor was commissioned and tested by the author. The conclusions reached are that for some types of compressor the difference between the actuator disc and radial equilibrium solutions is small and unimportant, whilst for other designs the actuator disc approach gives an appreciably better agreement with experiment than the radial equilibrium solution does. An account of the possibilities and limitations of resistance analogues for the solution of axisymmetric flow problems is given, as well as an account of the numerous technical difficulties encountered in the analogue. An outline is given of methods of using the analogue for the solution of "thick" actuator disc problems and for compressible flow problems.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:602141 |
| Date | January 1962 |
| Creators | Webb, John David |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10044/1/13606 |
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