Journal of Fluids Engineering: Recent submissions
Now showing items 1121-1140 of 9024
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An Assessment of Computational Fluid Dynamics Cavitation Models Using Bubble Growth Theory and Bubble Transport Modeling
(The American Society of Mechanical Engineers (ASME), 2019)This effort investigates advancing cavitation modeling relevant to computational fluid dynamics (CFD) through two strategies. The first aims to reformulate the cavitation models and the second explores adding liquid–vapor ... -
Effect of Nonuniform Flexibility on Hydrodynamic Performance of Pitching Propulsors
(The American Society of Mechanical Engineers (ASME), 2019)Many aquatic animals propel themselves efficiently through the water by oscillating flexible fins. These fins are, however, not homogeneously flexible, but instead their flexural stiffness varies along their chord and span. ... -
Full-Scale Measurement of Micropressure Waves in High-Speed Railway Tunnels
(The American Society of Mechanical Engineers (ASME), 2019)We aim to perform a series of field measurements for high-speed railway tunnels in China to obtain the micropressure wave (MPW) at the tunnel exit and the transient pressures near the tunnel portals. The relationship between ... -
Full-Field Dependence on Inlet Modeling of Non-Isothermal Turbulent Jets Using Validated Large Eddy Simulations
(The American Society of Mechanical Engineers (ASME), 2019)Inlet conditions for a turbulent jet are known to affect the near field behavior but eventually lose their significance downstream. Metrics of importance are often derived from mean and fluctuating velocity components, but ... -
Analytical and Numerical Investigations of Friction Number for Laminar Flow in Microchannels
(The American Society of Mechanical Engineers (ASME), 2019)Analytical and computational fluid dynamics (CFD) analyses confirmed the presence of apparent slip for water flow in microchannels with equivalent hydraulic diameter, Dh < 103μm, markedly decreasing the friction number, ... -
Correlations for the Choked Mass and Momentum Flux Density Considering Real-Gas Thermodynamics
(The American Society of Mechanical Engineers (ASME), 2019)The choked mass flux density and the choked momentum flux density for the nonideal fluids methane and nitrogen have been calculated using the Soave–Redlich–Kwong equation of state (EoS). For the computation a steady, ... -
Time-Periodic Electro-Osmotic Flow With Nonuniform Surface Charges
(The American Society of Mechanical Engineers (ASME), 2019)Mixing in a microfluidic device is a major challenge due to creeping flow, which is a significant roadblock for development of lab-on-a-chip device. In this study, an analytical model is presented to study the fluid flow ... -
Flow Behavior in Radial Vane Disk Brake Rotors at Low Rotational Speeds
(The American Society of Mechanical Engineers (ASME), 2019)The flow behavior through the vented channel of a brake disk determines its thermal performance, viz. its resistance to brake fade, brake wear, thermal distortion, and thermal cracking. We present experimental results of ... -
A Quantitative Evaluation Method for Impeller-Volute Tongue Interaction and Application to Squirrel Cage Fan With Bionic Volute Tongue
(The American Society of Mechanical Engineers (ASME), 2019)The impeller–volute tongue interaction strongly influences the aerodynamic performance of squirrel cage fan. To quantitatively evaluate the level of impeller–volute tongue interaction, we propose two parameters, i.e., ... -
Out With the Old, in With the New: Pelton Hydro Turbine Performance Influence Utilizing Three Different Injector Geometries
(The American Society of Mechanical Engineers (ASME), 2019)In previous works, the authors presented computational fluid dynamics (CFD) results, which showed that injectors with noticeably steeper nozzle and needle tip angles 110 deg & 70 deg and 150 deg & 90 deg, respectively, ... -
Modification of Energy Equation for Homogeneous Cavitation Simulation With Thermodynamic Effect
(The American Society of Mechanical Engineers (ASME), 2019)In industrial applications, cryogenic liquids are sometimes used as the working fluid of fluid machineries. In those fluids, the thermodynamic suppression effect of cavitation, which is normally ignored in water at room ... -
Turbulent Flow Through a Ducted Elbow and Plugged Tee Geometry: An Experimental and Numerical Study
(The American Society of Mechanical Engineers (ASME), 2019)An experimental and computational comparison of the turbulent flow field for a sharp 90 deg elbow and plugged tee junction is presented. These are commonly used industrial geometries with the tee often retrofitted by ... -
Study of a Cavitating Venturi Tube by Lumped Parameters
(The American Society of Mechanical Engineers (ASME), 2019)The hydrodynamic cavitation in a Venturi tube is studied both theoretically and experimentally. A lumped parameter model was developed to describe the accumulation and dissipation of energy in the biphasic flow as a function ... -
Cylindrical Smoothed Particle Hydrodynamics Simulations of Water Entry
(The American Society of Mechanical Engineers (ASME), 2019)This paper presents a smoothed particle hydrodynamics (SPH) modeling technique based on the cylindrical coordinates for axisymmetrical hydrodynamic applications, thus to avoid a full three-dimensional (3D) numerical scheme ... -
Numerical Investigation of the Clocking Effect Between Inducer and Impeller on Pressure Pulsations in a Liquid Rocket Engine Oxygen Turbopump
(The American Society of Mechanical Engineers (ASME), 2019)The clocking positions between the inducer and the impeller have a certain impact on the performance of the high-speed centrifugal pump, which however, is often ignored by designers. In the present study, three-dimensional ... -
A Novel Method to Determine the Discharge Coefficient of Constant Section Nozzles Under Compressible Dynamic Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2019)The present paper introduces a novel transient experimental method employed to determine the discharge coefficient of constant section nozzles of small diameters of 1–3 mm and with a length/diameter ratio of around one. ... -
Special Issue on Aerospace and Naval Propulsion
(The American Society of Mechanical Engineers (ASME), 2019) -
Experimental Investigation of the Swirl Development at the Inlet of a Coaxial Rotating Diffuser or Nozzle
(The American Society of Mechanical Engineers (ASME), 2019)When a fluid enters a rotating pipe, a swirl boundary layer with thickness of δ̃S appears at the wall and interacts with the axial momentum boundary layer with thickness of δ̃. The swirl is produced by the wall shear stress ... -
Numerical Investigation on Labyrinth Seal Leakage Flow and Its Effects on Aerodynamic Performance for a Multistage Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2019)Labyrinth seals are widely used in industrial centrifugal compressors to reduce leakage. However, no work has been conducted to numerically investigate the detailed seal leakage flow and its effects in an environment of ... -
Reviewer's Recognition
(The American Society of Mechanical Engineers (ASME), 2019)