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Development of a cycle simulation for a coal-fueled, direct-injected, internal combustion engine
(1986)
An engine cycle simulation for a coal-fueled internal combustion, reciprocating engine was developed. The primary objective of this work was to develop the simulation for evaluating the viability of coal fuels for engines. ...
Turbulence characteristics of an incompressible free jet under the influence of acoustic disturbances
(1988)
An acoustically excited (St = 0.50), Mach 0.15, axisymmetric free jet operating at Reynolds number of 41,000 was studied in order to determine the transition behavior, the overall turbulence characteristics, and to quantify ...
Turbulent heat transfer enhancement in rectangular channels with two opposite rib-roughened walls
(1986)
This work presents the results of an experimental investigation into the effects of variations in the channel aspect ratio and rib angle-of-attack, on the friction factor and local heat transfer in rectangular channels ...
Finite element analysis of crack growth in inelastic media
(1986)
In most materials, macrocrack extension is accompanied by inelastic phenomena (such as microcracking or plastic deformation) throughout a region surrounding the crack tip. Immediately ahead of the crack tip, strain ...
Entrance and exit region friction factor models for annular seal analysis
(1988)
The Mach number definition and boundary conditions in Nelson's nominally-centered, annular gas seal analysis are revised. A method is described for determining the wall shear stress characteristics of an annular gas seal ...
Finite control volume modeling of the turbulent motion of air in an enclosure
(1987)
The FCVM has been used to solve both open flow problems and turbulent flow problems. The particular problems chosen for consideration were the flow between infinite parallel plates and the buoyant flow in a square enclosure. ...
Extensions of the control volume based finite element method for fluid flow problems
(1987)
The Control Volume Based Finite Element Method (CVFEM) has been extended in two main aspects. The first is the integration of the vorticity-streamfunction formulation with the CVFEM. The key contribution of this work is ...
The development of mixture injected surface-ignition engine
(1980)
The feasibility of igniting lean air-fuel mixture with a torch formed by injecting a stoichiometric mixture over a hot surface near the end of the compression stroke is explored and proved. Several variables affecting the ...
Transverse shear and normal stresses in laminated beams
(1980)
It is known that the Kirchhoff Theory neglects the effects of transverse stresses on the displacement functions. Thus the validity of Kirchhoff Theory is suspect for laminated beams if the material properties vary significantly ...
Load-induced rotordynamic instabilities in turbomachinery
(1984)
By employing the extended Hamilton principle, both equations of motion and associated boundary conditions are derived for three different models subjected to non-conservative torques: the cantilevered rotor, the uniform ...