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Now showing items 111-120 of 126
Tribological and aerosol mechanics aspects of oil mist lubrication
(1993)
The tribological performance of the oil mist lubrication has been evaluated. A ten bearing censored group endurance was conducted to evaluated the influence of oil mist lubrication on the life of rolling element bearings ...
Effect of high mainstream turbulence on leading edge heat transfer and film cooling
(1991)
This dissertation details an experimental investigation of the influence of high mainstream turbulence on leading edge film cooling heat transfer. High mainstream turbulence was produced by a bar grid (Tu = 3.3-5.1%), a ...
Fracture diagram for stiffened panel and computer based approach for structural life prediction
(1980)
Over the past few decades the aircraft industry has devoted considerable effort incorporating fracture control procedures in the design of their structures. One of the problems confronting aircraft designers is the modeling ...
The effects of vibratory motion on heat transfer by free convection from a heated flat plate
(1965)
An experimental investigation was made of the effects of transverse vibratory motion on the heat transfer coefficient on a heated, vertical flat plate. A study was made of the effects of both amplitude and frequency. It ...
Stochastic micromechanical modeling of cleavage fracture in the ductile-brittle transition region
(1990)
The large scatter in cleavage fracture toughness values of steels in the ductile to brittle transition region has made characterization and design difficult. Current weakest link statistical models predict that cleavage ...
Two-phase flow of HCFC-22 and HFC-134a through short tube orifices
(1993)
HCFC-22 and HFC-134a were used with short tube orifices having length to diameter ratios ranging from 5 to 20 in a 9.53 mm (3/8 in.) refrigerant line to investigate both two-phase and subcooled liquid flow entering the ...
Maximizing allowable disturbances in uncertain, non-minimum phase unstable systems
(1991)
A frequency domain design methodology for maximizing the allowable size of step disturbances for a class of uncertain plants subjected to hard time domain constraints on the control, internal states and the output is ...
Flow field study of a rectangular jet
(1990)
A rectangular turbulent jet has a complex three dimensional flow field. These jets are frequently used in industry, however their flow field dynamics are not understood. The objective of this study was to increase the ...
An experimental and numerical study of turbulent heat transfer in orthogonally rotating two-pass ducts
(1995)
A heat transfer study from rotating two-pass ducts is presented. A rotating two-pass duct simulates the conditions in a serpentine coolant passage of a turbine blade. This work is mostly experimental with support from ...
Local heat transfer in an enclosed corotating disk with axial throughflow
(1992)
Local heat transfer in an enclosed corotating disk with axial throughflow was investigated. The rotating cavity has two plane disks and a cylindrical rim (shroud). The ratio of the rim span to the disk outer radius is 0.4 ...