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RISA Forward-Backward Time Integration Scheme to Treat Internal Gravity Waves
Publisher: American Meteorological Society
Abstract: A forward time difference in the momentum equations and a backward time difference in the thermodynamic equation is conditionally stable according to von Neumann?s stability analysis of linearized anelastic equations. In ...
Boundary-Layer Forcing as a Possible Trigger to a Squall-Line Formation
Publisher: American Meteorological Society
Abstract: The study of the life history of the 8 June 1966 squall line by Ogura and Chen (1977) indicates that a well-defined narrow hand of horizontal convergence was present at low levels prior to the appearance of first radar ...
Modeling of Scattering and Absorption by Nonspherical Cirrus Ice Particles at Thermal Infrared Wavelengths
Publisher: American Meteorological Society
Abstract: This paper examines a number of commonly used methods for the calculation of the scattering and absorption properties of nonspherical ice crystals at thermal infrared wavelengths. It is found that, for randomly oriented ...
An Accurate Parameterization of the Infrared Radiative Properties of Cirrus Clouds for Climate Models
Publisher: American Meteorological Society
Abstract: An accurate parameterization is presented for the infrared radiative properties of cirrus clouds. For the single-scattering calculations, a composite scheme is developed for randomly oriented hexagonal ice crystals by ...
Convection in the Lower Atmosphere and its Effects
Publisher: American Meteorological Society
Abstract: The development of convection in the lower atmosphere created by diurnal heating of the earth's surface is investigated by the use of a nonlinear numerical model. It is found that under the influence of the stable ...
Bridge Real-Time Damage Identification Method Using Inclination and Strain Measurements in the Presence of Temperature Variation
Publisher: American Society of Civil Engineers
Abstract: In this paper, a new real-time damage identification method has been presented for bridge structural health monitoring (SHM) considering temperature variation. The method utilizes model-based damage identification that ...
A Basis for Selecting the Most Appropriate Small Specimen Creep Test Type
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Many components in conventional and nuclear power plant, aeroengines, chemical plant etc., operate at temperatures which are high enough for creep to occur. These include plain pipes, pipe bends, branched pipes etc., the ...
A Method to Approximate the Steady State Creep Response of Three Dimensional Pipe Bend Finite Element Models Under Internal Pressure Loading Using Two Dimensional Axisymmetric Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: be greatly affected by these geometric variation (Rouse, J. P., Leom, M. Z., Sun, W., Hyde, T. H., Morris, A., “Steadystate Creep Peak Rupture Stresses in 90 Pipe Bends with Manufacture Induced Cross Section Dimension Variationsâ€International Journal...
Cyclic Viscoplasticity Testing and Modeling of a Service Aged P91 Steel
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A serviceaged P91 steel was used to perform an experimental program of cyclic mechanical testing in the temperature range of 400 آ°C–600 آ°C, under isothermal conditions, using both sawtooth and dwell (inclusion of ...
An Intercomparison of Model-Predicted Wave Breaking for the 11 January 1972 Boulder Windstorm
Publisher: American Meteorological Society
Abstract: Two-dimensional simulations of the 11 January 1972 Boulder, Colorado, windstorm, obtained from 11 diverse nonhydrostatic models, are intercompared with special emphasis on the turbulent breakdown of topographically forced ...