Turbomachinery health monitoring

Maliha, Rafiq Mahmoud


Turbomachinery blade design via optimization
Eyi, Sinan (2000-01-01)
This paper presents a design method for two-dimensional transonic turbine blades. It couples a Navier-Stokes flow solver and a numerical optimization algorithm to improve the aerodynamic performance of transonic turbine blades subject to specified design objective and constraints. The flow field prediction is based on the Navier-Stokes equations in order to represent accurately the nonlinear, rotational and viscous physics of turbomachinery flow fields. Effects of different design variables on the performan...
Turbomachinery Noise Radiation through the Engine Exhaust (TURNEX)
Özyörük, Yusuf(2005-1-01)
Research is needed to develop innovative concepts and enabling technologies to reduce aeroengine noise at source. Turbomachinery noise radiating from the bypass and core nozzles is becoming the dominant noise source on modern aircraft, but, while recent EU research programmes have made significant progress in reducing both the generation of turbbmachinery noise and the radiation of noise from the intake, little work has been conducted on reducing the radiation of turbomachinery noise from exhaust nozzles. ...
Turbo-rotary compound engine (TRCE) and novel thermodynamic cycle
Akmandor, Ibrahim Sinan; Ercan, Taylan; Karaca, Mehmet (2005-06-09)
The present paper proposes a new turbo-rotary compound engine (TRCE) and an associated novel thermodynamic cycle. In this engine, shafts linking customary gas turbine engines components such as axial compressors and axial turbines are eliminated. Instead, two or multiple spools are lined up in series within the engine. In the front spool, partial admission rotary vane type turbines drive axial compressor stages. In the back spool, axial turbine stages drive partial admission rotary vane type compressors. Tw...
Turbo product codes based on convolutional codes
Gazi, Orhan; Yılmaz, Ali Özgür (Wiley, 2006-08-01)
In this article, we introduce a new class of product codes based on convolutional codes, called convolutional product codes. The structure of product codes enables parallel decoding, which can significantly increase decoder speed in practice. The use of convolutional codes in a product code setting makes it possible to use the vast knowledge base for convolutional codes as well as their flexibility in fast parallel decoders. Just as in turbo codes, interleaving turns out to be critical for the performance o...
Aerothermodynamic analysis and design of rolling piston engine
Aran, Gökhan; Akmandor, İbrahim Sinan; Department of Aerospace Engineering (2007)
A rolling piston engine, operating according to a novel thermodynamic cycle is designed. Thermodynamic and structural analysis of this novel engine is carried out and thermodynamic and structural variables of the engine were calculated. The losses in the engine, friction and leakage were calculated and their effects on the engine were demonstrated.
Citation Formats
R. M. Maliha, “Turbomachinery health monitoring,” Middle East Technical University, 1989.