Journal of Fluids Engineering: Recent submissions
Now showing items 921-940 of 9024
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Onset of Cavity Oscillation From Transverse to Longitudinal Mode in a Supersonic Flow
(The American Society of Mechanical Engineers (ASME), 2020)Experiments are carried out in supersonic flow past cavities (L/D = 1–3) to comprehend cavity oscillation from transverse to longitudinal mode. To characterize this, time-resolved schlieren images and unsteady pressure ... -
Mapping Efficiency of a Pulsing Flow-Driven Turbine
(The American Society of Mechanical Engineers (ASME), 2020)Pressure gain combustion (PGC) shows potential to increase the cycle efficiency of conventional gas turbine engines (GTEs) if used in place of the steady combustor. However, a turbine driven by pulsing flow experiences a ... -
A Comparative Analysis of Mixing Performance of Power-Law Fluid in Cylindrical Microchannels With Sudden Contraction/Expansion
(The American Society of Mechanical Engineers (ASME), 2020)This paper focuses on the comparative electrokinetic micromixing of non-Newtonian fluid in cylindrical microchannels with surface potential heterogeneity due to sudden constriction/expansion. In numerical simulations, the ... -
Experimental and Simulated Studies of Oil/Water Fully Dispersed Flow in a Horizontal Pipe
(American Society of Mechanical Engineers (ASME), 2019)The flow of oil/water mixtures in a pipe can occur under different flow patterns. Additionally, being able to predict adequately pressure drop in such systems is of relevant importance to adequately design the conveying ... -
Simulation of Compressible and Incompressible Flows Through Planar and Axisymmetric Abrupt Expansions
(American Society of Mechanical Engineers (ASME), 2019)In this paper, compressible and incompressible flows through planar and axisymmetric sudden expansion channels are investigated numerically. Both laminar and turbulent flows are taken into consideration. Proper preconditioning ... -
Relaminarization of Pipe Flow by Means of 3D-Printed Shaped Honeycombs
(American Society of Mechanical Engineers (ASME), 2019)Based on a novel control scheme, where a steady modification of the streamwise velocity profile leads to complete relaminarization of initially fully turbulent pipe flow, we investigate the applicability and usefulness of ... -
Computational Fluid Dynamic Modeling to Determine the Resistance Coefficient of a Saturated Steam Flow in 90 Degree Elbows for High Reynolds Number
(American Society of Mechanical Engineers (ASME), 2019)The pressure drop in 90 deg elbows under the operating conditions of geothermal power plants in Mexico is studied using the computational fluid dynamics model. The elbow resistance coefficient was calculated for a steam ... -
Flow Regimes in Two-Phase Hexane/Water Semibatch Vertical Taylor Vortex Flow
(American Society of Mechanical Engineers (ASME), 2019)Optical-based experiments were carried out using the immiscible pair of liquids hexane and water in a vertically oriented Taylor–Couette reactor operated in a semibatch mode. The dispersed droplet phase (hexane) was ... -
On Leakage Issues of Sucker Rod Pumping Systems
(American Society of Mechanical Engineers (ASME), 2019)The issues of leakage with respect to the clearance between the pump plunger outer diameter and the pump barrel inner diameter and other operation conditions have been revisited in this paper. Both Poiseuille flow rate due ... -
A Fast Method to Predict the Cavitation Volume on Two-Dimensional Sections
(American Society of Mechanical Engineers (ASME), 2019)The paper presents a simplified prediction method to estimate cavitation-induced pressure fluctuations by marine propellers in a nonuniform wake field. It is realized by a very fast calculation of the cavitation volume ... -
Numerical Simulation on Pump Transient Characteristic in a Model Pump Turbine
(American Society of Mechanical Engineers (ASME), 2019)Pump performance characteristics of pump turbines in transient processes are significantly different from those in steady processes. In the present paper, transient processes of a flow rate that increased and decreased in ... -
Flow Over the Tip Region of a Flexible Cantilever Wing With the Effect of Angle of Attack
(American Society of Mechanical Engineers (ASME), 2019)The investigation focused on the conversions of flow structures with a change in angle of attack (AOA) for a flexible cantilever wing, which experienced a self-excited vibration. Stereoscopic particle imaging velocimetry ... -
Experimental and Numerical Characterization of Drop Impact on a Hydrophobic Cylinder
(American Society of Mechanical Engineers (ASME), 2019)In this paper, the impact of distilled water drops on hydrophobic cylinders is characterized using both experiments and numerical simulations. Water drops of 2.54 mm in diameter impact with a velocity of 1 m/s on hydrophobic ... -
Application of an Intermittency Model for Laminar, Transitional, and Turbulent Internal Flows
(American Society of Mechanical Engineers (ASME), 2019)A turbulent transition model has been applied to fluid flow problems that can be laminar, turbulent, transitional, or any combination. The model is based on a single additional transport equation for turbulence intermittency. ... -
Radial Stagnation Flow on a Twisting Cylinder
(American Society of Mechanical Engineers (ASME), 2019)The problem of stagnation-point flow impinging radially on a linearly twisting cylinder is considered. This advances previous work on the motion outside a cylinder undergoing linear torsional motion. The problem is governed ... -
Capillary Waves Joint to Super-Hydrophobic Bars
(American Society of Mechanical Engineers (ASME), 2019)Super-hydrophobic coating reduces hydrodynamic drag of rigid surfaces due to separation of a part of the surface from the flow by air. The drag reduction ratio is proportional to the ratio of the surface area covered by ... -
Accurate Approximate Methods for the Fully Developed Flow of Shear-Thinning Fluids in Ducts of Noncircular Cross Section
(American Society of Mechanical Engineers (ASME), 2019)The fully developed laminar flow of Non-Newtonian fluids in ducts has broad application in engineering. The power-law viscosity model is utilized most often in the engineering literature, but it is deficient for many fluids ... -
Multiscale Analysis of Powder-Propellant Conveying Stability Through a Nozzle
(American Society of Mechanical Engineers (ASME), 2019)The conveying stability of the powder propellant is significant for the feeding-system design and particle-combustion performance of powder engines. In this study, a nozzle structure was employed to increase the conveying ... -
Graphical Processing Unit-Accelerated Open-Source Particle Image Velocimetry Software for High Performance Computing Systems
(American Society of Mechanical Engineers (ASME), 2019)Particle image velocimetry (PIV) data processing time can constrain data set size and limit the types of statistical analyses performed. General purpose graphics processing unit (GPGPU) computing can accelerate PIV data ... -
Mixed Convective Flow of Electrically Conducting Fluid in a Vertical Cylindrical Annulus With Moving Walls Adjacent to a Radial Magnetic Field Along With Transpiration
(American Society of Mechanical Engineers (ASME), 2019)The steady, viscous flow and mixed convection heat transfer of an incompressible electrically conducting fluid within a vertical cylindrical annulus with moving walls are investigated. This annulus is under the influence ...