Heat Transfer Optimized Turbine Rotor Blades—An Experimental Study Using Transient Techniques

Autor:	M. L. G. Oldfield, A. E. Forest, J. H. Nicholson, D. L. Schultz
Rok vydání:	1984
Předmět:	Flow visualization Gas turbines Engineering business.industry Mechanical Engineering Energy Engineering and Power Technology Aerospace Engineering Mechanical engineering Turbine rotor Fuel Technology Nuclear Energy and Engineering Heat transfer Transient (oscillation) business
Zdroj:	Journal of Engineering for Gas Turbines and Power. 106:173-182
ISSN:	1528-8919 0742-4795
DOI:	10.1115/1.3239531
Popis:	Conventionally, high-pressure turbine blading is optimized for aerodynamic performance without any film cooling applied to the surfaces of the blades. It is considered that modern boundary layer prediction technqiues are now sufficiently accurate to allow the heat transfer to be considered at the profile design stage. Two turbine rotor profiles were designed, each with a heat transfer optimized pressure surface, and a detailed experimental study using transient techniques in the Oxford cascade tunnel was made. The results show that significant reductions in pressure surface heat transfer can be achieved by boundary layer optimization without compromising the aerodynamic efficiency of the blades. A description of the profiles is given, together with transfer rate measurements, pressure distribution, and aerodynamic loss measurements (a technique devleoped to measure aerodynamic loss in a transient cascade is described) and flow visualization photographs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a4aa83b3f3453a200a4313268d1746f3 https://doi.org/10.1115/1.3239531 Zobrazit plný text záznamu