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RISComputation of Particle and Scalar Transport for Complex Geometry Turbulent Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The prediction of particle and scalar transport in a complex geometry with turbulent flow driven by fans is considered. The effects of using different turbulence models, anisotropy, flow ...
Fuzzy Approaches to Evaluation in Engineering Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: As variables in the design evaluation stage are imprecise (fuzzy), tools, such as fuzzy set theory, should be used. This paper presents several fuzzy approaches to design evaluation. Weights ...
The Influence of Small Particles on the Structure of a Turbulent Shear Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, an analytical solution is found for the Reynolds equations describing a simple turbulent shear flow carrying small, wake-less particles. An algebraic stress model is used as the ...
Turbulence Attenuation by Small Particles in Simple Shear Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is concerned with the influence of a dispersed phase on carrier flow turbulence. The carrier flow is assumed to be a simple homogeneous shear, in which the fluid Reynolds stress ...
Size Effects in a Slowly Sheared Granular Media
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we analyze the nature of stress distribution experienced by large particles in a dense granular media subjected to slow shearing, using the distinct element method. The particles ...
Concepts of Separated J-Integrals, Separated Energy Release Rates, and the Component Separation Method of the J-Integral for Interfacial Fracture Mechanics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: First, this paper presents the concepts of separated J-integrals and separated energy release rates. The path-independent separated J-integrals have the physical significance of energy flows into ...
A Stochastic Model for Simulation and Diagnostics of Rolling Element Bearings With Localized Faults
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses the stochastic modeling of the vibration signal produced by localized faults in rolling element bearings and its use for diagnostic purposes. The aim is essentially to ...
Fatigue Damage Mechanisms of Bridging Fibers in Titanium Metal Matrix Composites1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the fatigue damage mechanisms of SiC fibers bridging a fatigue crack in unidirectional reinforced titanium matrix composites. For this purpose, an experimental/computational ...
Numerical Study of Pressure Fluctuations Caused by Impeller-Diffuser Interaction in a Diffuser Pump Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-dimensional and three-dimensional, unsteady state Reynolds-averaged Navier-Stokes (RANS) equations with standard k-ε turbulence models were solved within an entire stage of a diffuser pump to ...
Improvement of the Performance of a Supersonic Nozzle by Riblets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes an experimental study of supersonic internal flow over a riblet surface mounted on a channel wall to reduce pressure loss and improve the performance of a supersonic nozzle. ...