نتایج جستجو برای: Axial Performance

تعداد نتایج: 1093732  

Journal: :journal of mechanical research and application 2011
mohammad eftari hamid javaniyan jouybari majid reza shahhoseini farhad ghadak manuchehr rad

design models of multi- stage, axial flow compressor are developed for gas turbine engines. axial flow compressor is one of the most important parts of gas turbine units. therefore, its design and performance prediction are very important. one-dimensional modeling is a simple, fast and accurate method for performance prediction of any type of compressors with different geometries. in this appro...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
محمدمهدی معرفت محمدرضا آسترکی مصطفی خسروی الحسینی

in studies done on porous burner, generally burners with axial flow are considered. in this paper, porous burners with radial and axial flow have been modeled numerically and results of radial and axial porous burners with equal fuel consumptions are compared. the mechanism used in combustion phenomenon is 15 stage mechanisms which predict the pollutions production precisely. the results show a...

2006
Francis E. Washer

The measured values of the axial meridional powers for 311 spectacle lenses are reported. The spherical refractive powers range from + 7 . 0 0 to —20.00 diopters with cylindrical powers of 0.00, 1.00, and 2.00 diopters. The departures of the measured from the nominal values are shown. The probable errors of measurement are discussed. A set of tolerance values is suggested and the degree of comp...

Purpose: Evaluation of employee performance plays an effective role in organizational productivity and effectiveness. As a result, the purpose of this study was identification the components of evaluation of employee performance smart pattern. Methodology: This study in terms of purpose was applied and in terms of implementation method was qualitative. The research population was specialist ma...

Journal: :journal of mechanical research and application 2012
h. javaniyan jouybari m. eftari m. r. shahhoseini f. ghadak m. rad

the main objective in this paper is creating a method for one-dimensional modeling of multi stage axial flow turbine. the calculation used in this technique is based on common thermodynamics and aerodynamics principles in a mean stream line analyses. in this approach, loss models have to be used to determine the entropy increase across each section in the turbine stage. finally, the analysis an...

The performance prediction of axial flow compressors at different speeds and under various pressure ratio conditions are still being developed because of costly empirical experiments. One-dimensional modeling is a simple, fast and accurate method for performance prediction in any type of compressor with different geometries. In this approach, inlet flow conditions and compressor geometry are kn...

Journal: :Open Journal of Fluid Dynamics 2013

Journal: :Journal of Research of the National Bureau of Standards 1956

Journal: :Transactions of the Japan Society of Mechanical Engineers 1951

2011
Vishal Gulati Puneet Katyal

It is desirable to further increase the efficiency of turbo machines. In axial flow gas turbine, imprecise axial gap and tip clearance are two significant sources of inefficiency. This work investigates the effect of change in parameters such as axial gap and tip clearance on axial flow gas turbine used in power generation. Different combinations of axial gap and tip clearance have been tested ...

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