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A new method for calculating the flow field in a dump combustor
(Virginia Polytechnic Institute and State University, 1984)
An elliptic/parabolic procedure for solving the flow field in a dump combustor is described. The elliptic calculation is used at the dump combustor entrance and a parabolic calculation downstream. The calculations are ...
Optimization of multiple chiller systems
(Virginia Polytechnic Institute and State University, 1984)
The following investigation describes the method used in minimizing the power consumption of multiple chiller systems by determining not only the most efficient combination of chillers in the system but also the optimal ...
Compaction of soil by a vibratory roller: a theoretical description
(Virginia Polytechnic Institute and State University, 1984)
This study models the compaction of soil by a vibratory roller compactor and examines changes to current designs that may provide more efficient compaction. The modeling of the soil differs from previous analyses of the ...
Experimental determination of blade forces in a cross-flow turbine
(Virginia Polytechnic Institute and State University, 1984)
A cross-flow turbine was tested to determine the magnitude of the fluid forces on the blades. The tangential and radial forces and the torque were measured on a test blade.
Because the runner was made of plexiglas, the ...
Reaction sintered silicon nitride as a coating for carbon-carbon composites
(Virginia Polytechnic Institute and State University, 1984)
Reaction sintered silicon nitride (RSSN) was studied as a substitute coating material on the carbon-carbon material (RCC) presently used as a heat shield on the space shuttle, and on advanced carbon-carbon (ACC), a later ...
The effects of thin polymeric surface films on fretting corrosion
(Virginia Polytechnic Institute and State University, 1984)
The main purpose of this research is to determine if polymer films can prevent fretting between two metals, and if they can, what the protection mechanisms are. This research is a part of fretting corrosion studies currently ...
A computer simulation and performance evaluation of the Virginia Tech steam heating system
(Virginia Polytechnic Institute and State University, 1984)
A computer simulation program was developed to simulate the Virginia Tech low pressure steam heating system. Based on the total heat available to the buildings and the buildings' relative transmission heat losses, this ...
Microwave data reduction technique for calculation of solid propellant burning rates
(Virginia Polytechnic Institute and State University, 1984)
A microwave measurement system for obtaining continuous burning-rate information from a solid propellant slab-burning rocket motor is described. A previous derivative-based method for reducing the microwave data is reviewed ...
Particle and gas combustion in catalytic systems
(Virginia Polytechnic Institute and State University, 1984)
Kinetic data on soot and pyrolytic graphite oxidation rates have been used to calculate the ability of woodstove catalysts to burn woodstove effluent particles. Large variations appear in the literature and depending upon ...
A finite element analysis of pinion shaped spur gear teeth
(Virginia Polytechnic Institute and State University, 1984)
An analysis of the effects of gear shaping with a pinion cutter upon the geometry and root stresses in external spur gears using the finite element method is given. The models analyzed have the shape of a ring with three ...