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Title: Computation of transient temperatures and stresses in steam turbine rotors
Author: Chow, Chi-Loong
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1965
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One limiting condition in the quick starting-up and loading of a steam turbine is the thermal stresses developed in the turbine rotor. Theoretical analysis has hitherto been hindered by the time required in the computation of transient temperature and stress equations. This report is then concerned with the use of resistance analogue and digital computers to obtain, in a comparatively short time, the various temperature and stress distributions that would be desirable in the analysis of the thermal load during the starting-up of a steam turbine. The temperature and stress equations have been studied and suitable methods of analysis are described in this report. For the computation of transient temperature distributions, the time-dependent boundary condition was simulated on the A.E.I. analogue computer. A description of this is followed by a description,of the development of a digital computer programme for the solution of the thermal stresses on a 4-drum "Mercury" computer. Using these methods the computations were carried out to study the thermal conditions in a turbine rotor during starting-up and. loading. The computed results are discussed in this report and an optimum starting-up procedure is recommended using as a criterion the allowable thermal stresses in the rotor.
Supervisor: Hoyle, R. D. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available