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Wavenumber Spectrum of Very Short Wind Waves: An Application of Two-Dimensional Slepian Windows to Spectral Estimation
Publisher: American Meteorological Society
Abstract: A multitaper 2D spectral estimation method is developed for increasing the degree of freedom of the estimation. The core of this method is 2D Slepian eigen windows that are optimum in the sense of minimizing the spectral ...
Experiments on Natural Convective Solar Thermal Achieved by Supercritical CO2/Dimethyl Ether Mixture Fluid
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The current study proposed an experimental investigation into the basic characteristics of solar thermal conversion using supercritical CO2–dimethyl ether (DME) natural convection. The main goals are to reduce the operation ...
Oilstone Processing and Its Impact on the Surface Texture of Cylinder Bore
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Honing is one of the abrasive-based machining processes to remove material through the asperity interaction between numerous stochastic grains distributed on oilstone (also called honing stone) and workpiece. Therefore, ...
A Unified Analogy-Based Computation Methodology From Elasticity to Electromagnetic-Chemical-Thermal Fields and a Concept of Multifield Sensing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper reports a unified analogy-based computation methodology, together with a concept of multifield, multifunctional sensing, from elasticity to electromagnetic-chemical-thermal fields, via utilizing the similarities ...
Performance Analysis of a New ORC-VCC System With Mechanical Overheating and Correlation Fitting of Most Important System Parameter
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes a new organic Rankine cycle + vapor compression cycle (ORC-VCC) system (with mechanical overheating refrigeration cycle), and this system can not only reduce the heat absorption of the ORC evaporator, ...
Effects of Heater Orientations on the Natural Circulation and Heat Transfer in a Supercritical CO2 Rectangular Loop
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Supercritical fluid based heat transfer loop (NCL) has become a hot topic in energy conversion systems. In such systems, supercritical natural convection stability and heat transfer conditions are crucial for design and ...
Development of the Upgraded Tangent Linear and Adjoint of the Weather Research and Forecasting (WRF) Model
Publisher: American Meteorological Society
Abstract: he authors propose a new technique for parallelizations of tangent linear and adjoint codes, which were applied in the redevelopment for the Weather Research and Forecasting (WRF) model with its Advanced Research WRF dynamic ...
Analytical Upper Limit of Drag Reduction With Polymer Additives in Turbulent Pipe Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow drag reduction induced by chemical additives, more commonly called drag-reducing agents (DRAs), has been studied for many years, but few studies can manifest the mechanism of this phenomenon. In this paper, a new ...
Influence of Activators on the Dynamic Energy Properties of Fly Ash–Based and Slag-Based Geopolymer Composites
Publisher: American Society of Civil Engineers
Abstract: Sodium hydroxide (NaOH) and sodium silicate–activated fly ash and slag-based geopolymer composite (NSFSGC) and NaOH and sodium carbonate (Na2CO3)-activated fly ash–based and slag-based GC (NNFSGC) were prepared and their ...
Coupled Piezoelectric Phononic Crystal for Adaptive Broadband Wave Attenuation by Destructive Interference
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we report a piezoelectric phononic crystal plate featuring broadband wave attenuation. In the piezoelectric phononic crystal system, the transmitted elastic wave is attenuated owing to destructive interference ...