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RISEstimation of Dissipative Heating Using Low-Level In Situ Aircraft Observations in the Hurricane Boundary Layer
Publisher: American Meteorological Society
Abstract: Data collected in the low-level atmospheric boundary layer in five hurricanes by NOAA research aircraft are analyzed to measure turbulence with scales small enough to retrieve the rate of dissipation. A total of 49 flux ...
A New Approach to Estimate Directional Spreading Parameters of a Cosine-2s Model
Publisher: American Meteorological Society
Abstract: For accurate and consistent estimates of the directional spreading parameter and mean wave direction of directional seas based on a cosine-2s directional spreading model, a new approach is proposed, employing a maximum ...
Geometric Error Propagation Model-Based Accuracy Synthesis and Its Application to a 1T2R Parallel Manipulator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To meet the increasing requirements for precision hybrid machine tools, this paper presents a geometric error propagation model-based accuracy synthesis method for parallel manipulators (PMs) with one translational and two ...
Observational Estimates of the Horizontal Eddy Diffusivity and Mixing Length in the Low-Level Region of Intense Hurricanes
Publisher: American Meteorological Society
Abstract: his study examines further the characteristics of turbulent flow in the low-level region of intense hurricanes using in situ aircraft observations. The data analyzed here are the flight-level data collected by research ...
Elastodynamic Model Based Vibration Characteristics Prediction of a Three Prismatic–Revolute–Spherical Parallel Kinematic Machine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Parallel kinematic machines (PKMs) have been proposed as an alternative solution for highspeed machining (HSM) tool for several years. However, their dynamic characteristics are still considered an issue for practice ...
Experimental and Theoretical Studies on Autogenous Shrinkage of Concrete at Early Ages
Publisher: American Society of Civil Engineers
Abstract: The magnitude of the shrinkage strain is normally proportional to the amount of moisture lost caused by drying or cement hydration. In this study, the development of internal relative humidity and autogenous shrinkage in ...
Characteristic Equation Based Dynamic Analysis of a Three Revolute Prismatic Spherical Parallel Kinematic Machine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A threerevolute prismatic spherical (3RPS) parallel kinematic machine (PKM) module is proposed as an alternative solution for highspeed machining (HSM) tool. Considering the PKM as a typical compliant parallel device, whose ...
An Observational Study of Vertical Eddy Diffusivity in the Hurricane Boundary Layer
Publisher: American Meteorological Society
Abstract: lthough vertical eddy diffusivity or viscosity has been extensively used in theoretical and numerical models simulating tropical cyclones, little observational study has documented the magnitude of the eddy diffusivity in ...
A Bayes Factor Model for Detecting Artificial Discontinuities via Pairwise Comparisons
Publisher: American Meteorological Society
Abstract: n this paper, the authors present a Bayes factor model for detecting undocumented artificial discontinuities in a network of temperature series. First, they generate multiple difference series for each station with the ...
Free-Wave Energy Dissipation in Experimental Breaking Waves
Publisher: American Meteorological Society
Abstract: Several transient wave trains containing an isolated plunging or spilling breaker at a prescribed location were generated in a two-dimensional wave flume using an energy focusing technique. Surface elevation measurements ...