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RISToward the Ultimate Goal on Simulating Multi-Phase Flows, Simulation of Film Boiling at High-Density Ratios
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow boiling is a common phenomenon in modern technology and industries. A finite difference Front Tracking method is used to study film boiling on a flat plate subject to a constant heat flux. Large density ratios are ...
In Plane Microstructure of Gas Diffusion Layers With Different Properties for PEFC
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The gas diffusion layer (GDL) is undoubtedly one of the most complicated components used in a polymer electrolyte fuel cell (PEFC) in terms of liquid and gas transport phenomena. An appropriate fuel cell design seeks a ...
Prediction of Rotordynamic Performance of Smooth Stator-Grooved Rotor Liquid Annular Seals Utilizing Computational Fluid Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Circumferentially grooved, annular liquid seals typically exhibit good whirl frequency ratios (WFRs) and leakage reduction, yet their low effective damping can lead to instability. The current study investigates the ...
Rotordynamic Force Coefficients of Volutes and Diffusers for Prediction of Turbomachinery Vibration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The American Petroleum Institute (API) level II vibration stability analysis for impellers requires higher fidelity models to predict the dynamic forces of the whirling impeller. These forces are in turn required to predict ...
A Transient Computational Fluid Dynamics, Phase Modulated, Multifrequency Approach for Impeller Rotordynamic Forces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Modern high performance turbomachines frequently operate in supercritical condition above their first critical speed, rendering these machines prone to rotordynamic instability. The American Petroleum Institute (API) ...
A Transient Computational Fluid Dynamics, Phase Modulated, Multifrequency Approach for Impeller Rotordynamic Forces
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Modern high performance turbomachines frequently operate in supercritical condition above their first critical speed, rendering these machines prone to rotordynamic instability. The American Petroleum Institute (API) ...
On the Prediction of Transient Wear
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During the runningin process, a friction pair experiences drastic evolution in many of its tribological parameters, such as surface roughness, wear rate, and coefficient of friction until steadystate is attained. In this ...
Improving Thermal Properties of N Nonadecane/Expanded Dolomite Composite Phase Change Material for Thermo Regulating Textiles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper mainly addressed preparation of a new nnonadecane/expanded dolomite (ED) composite using vacuum impregnation method. This method was first used for textile thermal protection. In this method, nnonadecane was ...
Effect of Apex Angle, Porosity, and Permeability on Flow and Heat Transfer in Triangular Porous Ducts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an analysis of forced convection flow and heat transfer in triangular ducts containing a porous medium. The porous medium is isotropic and the flow is laminar, fully developed with constant properties. ...
Turbulence Modeling of Forced Convection Heat Transfer in Two-Dimensional Ribbed Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Although the problem of 2D ribbed channels has been studied heavily in the literature as a benchmark or basic case for cooling of electronic packing, there is still a contradiction in the ...