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RISA Numerical Study on Oscillatory Flow-Induced Sediment Motion over Vortex Ripples
Publisher: American Meteorological Society
Abstract: two-dimensional, two-phase flow model is applied to the study of sediment motion over vortex ripples under oscillatory flow conditions. The Reynolds-averaged continuity equations and momentum equations for both the fluid ...
Rolling Moment Characteristic Analysis of Wrap-Around Fins
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A lot of numerical and experimental studies indicate that wrap-around fin configuration exhibits a self-induced rolling moment even at angle of attack zero. It depends on the unequal pressure ...
Numerical Study on Effect of Joint Strength Mobilization on Behavior of Rock Masses with Large Nonpersistent Joints under Uniaxial Compression
Publisher: American Society of Civil Engineers
Abstract: In this paper, by analyzing evolution of aperture and contact forces of joints as well as parallel bond breakage, the effect of joint strength mobilization on mechanical behavior of jointed rock masses was studied numerically ...
A Spectral Microplane Model for the Anisotropic Damage Behavior of Shales
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The development of constitutive models for shales has been a challenge for decades due to the difficulty of characterizing the strongly anisotropic macroscopic behavior related to the inherent mesostructure and damage ...
Design of Repetitive-Control System With Input Dead Zone Based on Generalized Extended-State Observer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper concerns a repetitive-control system with an input-dead-zone (IDZ) nonlinearity. First, the expression for the IDZ is decomposed into a linear term and a disturbance-like one that depends on the parameters of ...
Effect of Trailing Edge Modification of a Mixed Flow Pump
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern pumps are designed to guarantee a sufficiently large operating range or to satisfy the performance requirements relative to more than one operating point. This study applies trailingedge (TE) modification method ...
A Diagnostic Study of the Low-Level Jet during TAMEX IOP 5
Publisher: American Meteorological Society
Abstract: During 31 May?2 June 1987 a low pressure center developed around 28°N, 102°E in the lee of the Tibetan Plateau during the passage of a midlatitude trough. It moved northeastward and intensified over the Yangtze River valley ...
A Numerical Study of the Low-Level Jet during TAMEX IOP 5
Publisher: American Meteorological Society
Abstract: The Pennsylvania State University?National Center for Atmospheric Research Mesoscale Model Version 4 is used to simulate the cyclogenesis and the development of a low-level jet (LLJ) that occurred during the Taiwan Area ...
Ground Target Tracking Guidance Law for Fixed-Wing Unmanned Aerial Vehicle: A Search and Capture Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One important problem for unmanned aerial vehicles (UAVs) in mission applications is to track ground targets automatically. A major concern is how to keep the tracking process stable and efficient while the motion of the ...
Aerodynamic Interference Mechanism of Moving Vehicles on a Bridge Deck in Crosswind Environment
Publisher: American Society of Civil Engineers
Abstract: Super long-span bridges offer great convenience, but, because of their high decks, they also suffer from traffic safety problems related to strong winds. In this paper, large eddy simulation and dynamic mesh techniques for ...