This report describes a quasi-Eulerian method which has been incorporated into the ICECO code to study slug impact and coolant spillage problems in a fast-reactor accident. The quasi-Eulerian cells used in this method are located on the tops of the regular cells. The axial size of the quasi-Eulerian cells varies according to the gap generated at the reactor head-wall junction. Penetration holes on the cover head are modeled on the top center of the quasi-Eulerian cells. Fluid variables in these quasi-Eulerian cells also satisfy all the conservation equations. Since the boundary pressures above the quasi-Eulerian cells are determined by the movement of the moving grid, the velocity of the cover head is also included in the pressure iteration. Several examples are given to compare the results obtained by this quasi-Eulerian method with the existing experimental excursion data, as well as with the analytical and the other code solutions.

The low-cycle fatigue behavior of Type 304 stainless steel has been investigated at 593 degrees C in a dynamic vacuum of better than 1.3 x 10⁻⁶ Pa (10⁻⁸ torr). The results concerning the effects of strain range, strain rate and tensile hold time on fatigue life are presented and compared with results of similar tests performed in air and sodium environments. Under continuous symmetrical cycling, fatigue life is significantly longer in vacuum than in air; in the low strain range regime, the effect of sodium on fatigue life appears to be similar to that of vacuum. Strain rate (or frequency) strongly influences fatigue life in both air and vacuum. In compressive hold-time tests, the effect of environment on life is similar to that in a continuous-cycling test. However, tensile hold times are nearly as damaging in vacuum as in air. Thus, at least for austenitic stainless steels, the influence of the environment of fatigue life appears to depend on the loading waveshape.

Three-dimensional finite-element models for the treatment of the nonlinear, transient response of a fast breeder reactor's above-core structures are described. For purposes of treating arbitrarily large rotations, node orientations are described by unit vectors and the deformable elements are treated by a corotational formulation in which the coordinate system is embedded in the elements. Deformable elements may be connected either to nodes directly or through rigid bodies. The time integration is carried out by the Newmark beta method. These features have been incorporated to form the finite-element program SAFE/RAS (Safety Analysis by Finite Elements/Reactor Analysis and Safety Division). Computations are presented for semianalytical comparisons, simple scoping studies, and Stanford Research Institute (SRI) test comparisons.

To evaluate potential electrodes for molten carbonate fuel cells, we reviewed the literature pertaining to these cells and interviewed investigators working in fuel cell technology. In this critical survey, the effect of three electrode aging processes - corrosion or oxidation, sintering, and poisoning - on these potential fuel-cell electrodes is presented. It is concluded that anodes of stabilized nickel and cathodes of lithium-doped NiO are the most promising electrode materials for molten carbonate fuel cells, but that further research and development of these electrodes are needed. In particular, the effect of contaminants such as H2S and HCl on the nickel anode must be investigated, and methods to improve the physical strength and to increase the conductivity of NiO cathodes must be explored. Recommendations are given on areas of applied electrode research that should accelerate the commercialization of the molten carbonate fuel cell.

Quarterly report of the Argonne National Laboratory Chemical Engineering Division regarding activities related to properties and handling of radioactive materials, operation of nuclear reactors, and other relevant research. This report includes studies on advanced solvent extraction techniques focused on the development of centrifugal contactors for use in Purex processes, extraction kinetics of ruthenium and zirconium in the presence of uranium, and dispersion of uranium and plutonium by fires.

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Hailey quadrangle including a detailed geologic summary, interpretation report, standard deviation maps, pseudo-contour maps, interpretation maps, flight line and geologic base map, and individual corrected profiles.

Final report documenting a high-sensitivity airborne radiometric and magnetic survey of the Alliance and Scottsbluff quadrangles including the survey description, specifications, data processing methods, interpretation methods, and regional geologic review.

The following report is the second volume discussing airborne radiometric and magnetic data from New Mexico within the Santa Fe quadrangle. This report provides detailed data descriptions from the study.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Grand Forks quadrangle of Minnesota and North Dakota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Fargo quadrangle of Minnesota and North Dakota.

From introduction: This report details the airborne spectrometer survey performed in 1978 covering the Grand Canyon quadrangle located in north-western Arizona. The survey consisted of 23 traverse lines and 10 tie lines totaling 3,246 line miles.

This document contains maps and surveys analyzing certain areas of the Grand Canyon.

Appendix containing single record geological survey data of the Alliance quadrangle to accompany an aerial gamma ray and magnetic survey of the Alliance and Scottsbluff quadrangles of Nebraska.

Appendix containing single record geological survey data of the Scottsbluff quadrangle to accompany an aerial gamma ray and magnetic survey of the Alliance and Scottsbluff quadrangles of Nebraska.

Appendix containing averaged geological survey data of the Scottsbluff quadrangle to accompany an aerial gamma ray and magnetic survey of the Alliance and Scottsbluff quadrangles in Nebraska.

Appendix containing averaged geological survey data to accompany an aerial gamma ray and magnetic survey of the Alliance and Scottsbluff quadrangles of Nebraska.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Grand Canyon Quadrangle in northern Arizona.

Memorandum presenting a description and formulas that can be used to plot the cross-sectional outline of a Joukowski wing.

Equations are derived to demonstrate which distribution of lifting elements result in a minimum amount of aerodynamic drag. The lifting elements were arranged (1) in one line, (2) parallel lying in a transverse plane, and (3) in any direction in a transverse plane. It was shown that the distribution of lift which causes the least drag is reduced to the solution of the problem for systems of airfoils which are situated in a plane perpendicular to the direction of flight.

The pressure distribution and resistance found by theory and experiment for simple quadrics fixed in an infinite uniform stream of practically incompressible fluid are calculated. The experimental values pertain to air and some liquids, especially water; the theoretical refer sometimes to perfect, again to viscid fluids. Formulas for the velocity at all points of the flow field are given. Pressure and pressure drag are discussed for a sphere, a round cylinder, the elliptic cylinder, the prolate and oblate spheroid, and the circular disk. The velocity and pressure in an oblique flow are examined.

A general method for finding the steady flow velocity relative to a body in plane curvilinear motion, whence the pressure is found by Bernoulli's energy principle is described. Integration of the pressure supplies basic formulas for the zonal forces and moments on the revolving body. The application of the steady flow method for calculating the velocity and pressure at all points of the flow inside and outside an ellipsoid and some of its limiting forms is presented and graphs those quantities for the latter forms.

From abstract: The existing locks at Locks and Dam No. 1 were constructed between 1929 and 1932. Problems have been experienced with accumulation of ice and debris at the intakes, air entrapment in the culverts of the filling and emptying system, excessive turbulence in the lock chamber during filling, and hazardous conditions downstream from the locks during emptying operations.

The following report summarizes the investigations made following the Mighty Epic event beneath the surface of Rainier Mesa in U12n.10 tunnel at the Nevada Test Site.

From introduction: This report presents the preliminary findings obtained from the baseline network through 1978. For North Carolina, it represents the first known attempt to determine the concentrations of major chemical and trace constituents and nutrients contributed to the State's streams by natural processes.