Journal of Fluids Engineering: Recent submissions
Now showing items 181-200 of 9024
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Computational Aeroacoustics of Low-Pressure Axial Fans Installed in Parallel
(The American Society of Mechanical Engineers (ASME), 2024)Ducted rotor-only low-pressure axial (LPA) fans play an integral role in automotive thermal management of electric vehicles and are the primary source of noise from the underhood region. Multiple LPA fans are often placed ... -
Stability Analysis of Pure Oil-Water Emulsion in Gravity-Based Separators1
(The American Society of Mechanical Engineers (ASME), 2024)The purpose of this work is to investigate the stability of pure (emulsifier-free) oil-water emulsion in a gravity-based separator as a function of various parameters such as mixing speed, water volume concentration, ... -
Effect of Trailing Edge and Span Morphing on the Performance of an Optimized NACA6409 Wing in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2024)A computational fluid dynamics (CFD) investigation was carried out on a three-dimensional NACA6409 wing in ground effect at a Reynolds number of 320,000. Using a multi-objective-SHERPA algorithm, a root angle of 4 deg angle ... -
Numerical Investigation of the Impact of the Rectangular Nozzle Aspect Ratio on Liquid Jet in Crossflow
(The American Society of Mechanical Engineers (ASME), 2024)High-fidelity simulation is conducted to investigate liquid jet in crossflow, specifically regarding the rectangular nozzle. The influence of aspect ratio (AR) of nozzles on the atomization characteristics of liquid column ... -
Flow Performance Enhancement of a Fluidic Oscillator Through the Integration of Rectangular Ribs on Coanda Surface
(The American Society of Mechanical Engineers (ASME), 2024)Fluidic oscillators utilize internal flow dynamics to produce oscillatory fluid jets. The Coanda surface in the mixing chamber of a fluidic oscillator plays a critical role by facilitating controlled fluid manipulation ... -
Influence of Scallops on Windage Loss and Flow Characteristics in Disk-Type Gap
(The American Society of Mechanical Engineers (ASME), 2024)Windage loss and flow characteristics in a disk-type gap featuring scalloped structures are investigated in this paper. Special attention is paid to the size of the scallops and the associated loss models. The respective ... -
The Measured Flow at the Inlet of a Francis Turbine Runner Operating in Speed No-Load Condition
(The American Society of Mechanical Engineers (ASME), 2024)For Francis turbines, speed-no-load (SNL) represents one of the most detrimental operating conditions, marked by significant pressure and strain fluctuations on the runner. Mitigating these fluctuations necessitates a ... -
Numerical Investigation on Tip Clearance Leakage Control for a Radial Turbine With Tip Control Holes
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, a novel tip clearance control structure, the tip control hole (TCH), is proposed, which is appropriate for the radial turbines with the characteristics of low manufacturing cost, thin blade, insufficient tip ... -
Experimental Demonstration of a Topology Optimization Method to Generate a Capacity-Specific Device With Cavitation Resistance for Control Valve Applications
(The American Society of Mechanical Engineers (ASME), 2024)Topology optimization (TO) is a powerful method of generating structures that have desirable functional performance, to date most commonly used to improve structural behavior or to optimize pressure drops in laminar flow ... -
An Actuator-Disk Model Augmentation for Low-Pressure Axial Fan Simulation
(The American Society of Mechanical Engineers (ASME), 2024)Actuator-disk rotor models are important simulation tools for cost-effective industrial axial fan system analysis. Actuator-disk fan model performance, however, is constrained by the conventional use of two-dimensional ... -
Entrance Lengths for Fully Developed Laminar Flow in Eccentric Annulus
(The American Society of Mechanical Engineers (ASME), 2024)We study the entrance length in eccentric annular geometries, where the axes of the inner and outer pipes forming the annulus are offset from each other. Such geometries are considered relevant for several industrial ... -
Study of the Flow Characteristics of Pumped Media in the Confined Morphology of a Ferrofluid Pump With Annular Microscale Constraints
(The American Society of Mechanical Engineers (ASME), 2024)The driving mechanism of ferrofluid micropumps under the constraints of an annular microscale morphology is not fully understood. The gap between microfabrication technology and the fundamental theory of microfluidics has ... -
Exploring Near-Wake Structures: Bio-Inspired Convergent-Divergent Riblets on Circular Bluff Bodies
(The American Society of Mechanical Engineers (ASME), 2024)Convergent-divergent (C-D) riblets represent a pioneering rough surface inspired by the skin of fast-swimming sharks and flight feathers of the birds. In this study, we applied convergent-divergent riblets to the outer ... -
Experimental Investigation on the Effect of Nozzle Design on Airlift Pump Performance
(The American Society of Mechanical Engineers (ASME), 2024)Airlift systems are widely used for mass, momentum, and energy transport, particularly in hydrothermal and oil extraction wells. Predicting the impact of nozzle design parameters, such as perforation diameters and air ... -
Compressible Flow Through Flat Valve Seals at Microscale Displacements
(The American Society of Mechanical Engineers (ASME), 2024)Existing analytical flow models for predicting flow rates at microscale seal displacements are limited to two separate domains. The first assumes a small channel length to height aspect ratio at relatively large seal ... -
Parametric Assessment of Size and Peak Pressure Variability for Cavitation Bubbles Induced by Low-Voltage Discharge
(The American Society of Mechanical Engineers (ASME), 2025)Cavitation presents a significant challenge in the operation and longevity of hydraulic machinery. Studying a single cavitation bubble can provide fundamental insights into the phenomenon. One simple and popular method to ... -
Heat Transfer in Double Pipe Heat Exchangers With Small Tube Spacing
(The American Society of Mechanical Engineers (ASME), 2024)In this work, the heat transfer in double pipe heat exchangers (DPHEs) with small tube spacing is analyzed. This type of heat transfer is generally described in many literary sources; however, in laminar flow, the resulting ... -
Leak-Rate Through Carbon Brush Seals: Experimental Tests Versus Predictions From a Porous Medium Approach
(The American Society of Mechanical Engineers (ASME), 2024)This study presents a detailed comparative analysis between experimental leakage flow rates and numerical predictions for carbon brush seals with long bristles, utilizing a porous medium model approach. A series of tests ... -
A Multi-Objective Optimization Framework for Offshore Wind Farm Design in Deep Water Seas
(The American Society of Mechanical Engineers (ASME), 2024)Floating offshore wind energy will play a key role in the clean energy transition. The number of large-scale wind farm projects is growing in regions like Northern Europe, the East Coast of the U.S., and the Mediterranean ... -
Assessing the Effect of Coriolis Acceleration on the Coherent Structures in the Wake of a Wind Turbine Using Dynamic Mode Decomposition
(The American Society of Mechanical Engineers (ASME), 2024)The present work aims to study the effect of veer, namely, the height-dependent lateral deflection of wind velocity due to Coriolis acceleration, on the coherent structures in the wake of the national renewable energy ...