Journal of Fluids Engineering: Recent submissions
Now showing items 701-720 of 9024
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Description of Unsteady Flow Characteristics in a Side Channel Pump With a Convex Blade
(The American Society of Mechanical Engineers (ASME), 2021)To investigate the unsteady flow characteristics in side channel pumps, the vortex structures and their evolutions in the impeller and side channel flow passages have been comprehensively studied. Systematically, three ... -
Onset Criteria for Bulk-Mode Thermoacoustic Instabilities in Supercritical Hydrocarbon Fuels
(The American Society of Mechanical Engineers (ASME), 2021)We have investigated supercritical-p (p > 1192 psi (8.22 MPa)) methanol at pressures up to 1645 psi (11.3 MPa) flowing through a heated tube at flow rates of 4–7 lb/h (1.8–3.2 kg/h). Tube heated lengths have been varied ... -
On the Use of a Buoyancy Parameter for Distinguishing Deteriorated From Normal Heat Transfer in Upward Flows at Supercritical Pressures
(The American Society of Mechanical Engineers (ASME), 2021)An extensive analysis of two versions of a buoyancy parameter as supercritical heat transfer deterioration (DHT) identifiers was conducted for large databases obtained in carbon dioxide flowing through three electrically ... -
Numerical Study on Flow and Heat Transfer Performance of Natural Gas in a Printed Circuit Heat Exchanger During Transcritical Liquefaction
(The American Society of Mechanical Engineers (ASME), 2021)The main cryogenic heat exchanger is a core piece of equipment in the liquefaction of natural gas. The printed circuit heat exchanger is gradually becoming a primary choice for the main cryogenic heat exchanger, because ... -
Special Section on Flow Physics of Supercritical Fluids in Engineering
(The American Society of Mechanical Engineers (ASME), 2021)Supercritical-fluid applications have recently received extensive attention. Applications of supercritical flows include thermal power generation, cooling of scramjet engines, highly efficient compact power systems, ... -
Attached and Attaching Three-Dimensional Jets From Circular Nozzles: Analytical Model
(The American Society of Mechanical Engineers (ASME), 2020)Here we consider velocity profiles of three dimensional attaching and attached jets emerging from circular nozzles. Like their well-studied two-dimensional counterparts, these wall jets lose momentum due to interactions ... -
An Investigation on Forced Convection in Clearance of Corotating Disks With Diverging Laminar Flow
(The American Society of Mechanical Engineers (ASME), 2020)In this work, forced convection in the laminar outflow between two disks is predicted. The disks can be corotating or contrarotating with equal or with different angular velocities. A published closed form solution is used ... -
Numerical Analysis of Cavitation Inception and Desinence Behind Orifices
(The American Society of Mechanical Engineers (ASME), 2020)Experimental results and trends for cavitation inception and desinence behind orifices in microchannels are quite different from the data obtained during previous experiments in much larger facilities. The objective of ... -
Effect of Turbulence on the Wavefront of an Ultrahigh Intensity Laser Beam
(The American Society of Mechanical Engineers (ASME), 2020)Ultrahigh intensity lasers face thermal management issues that limit their repetition rates. The key challenge is to efficiently evacuate the heat deposited in the amplifier by the optical pumping without impacting the ... -
Recalibration of Eddy Viscosity Models for Numerical Simulation of Cavitating Flow Patterns in Low Pressure Nozzle Injectors
(The American Society of Mechanical Engineers (ASME), 2020)Cavitation in pressure injectors/atomizers affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing efficient devices if this cavitation state is controlled. ... -
Turbulent Mixing Process of a Round Jet With Slot Lobes
(The American Society of Mechanical Engineers (ASME), 2020)Turbulent mixing in the near region of a round jet with three slot lobes is examined via mean velocity and turbulent statistics and structures at a Reynolds number of 15,000. The design utilizes separate flow motivations ... -
An Overview of Synthetic Jet Under Different Clamping and Amplitude Modulation Techniques
(The American Society of Mechanical Engineers (ASME), 2020)There is generally limited guidance available on the optimum clamping method for the diaphragms used in the synthetic jet actuators (SJAs). This paper describes the effects of clamping methods (O-rings, neoprene rubber ... -
Computational Protocol for Spray Flow Simulations Including Primary Atomization
(The American Society of Mechanical Engineers (ASME), 2020)Primary atomization is the key element in spray flow simulations. We have, in our previous work, used and validated the integral form of the conservation equations, leading to the “quadratic formula” for determination of ... -
Flow Pattern Transition in Pipes Using Data-Driven and Physics-Informed Machine Learning
(The American Society of Mechanical Engineers (ASME), 2020)Flow pattern is an important engineering design factor in two-phase flow in the chemical, nuclear, and energy industries, given its effects on pressure drop, holdup, and heat and mass transfer. The prediction of two-phase ... -
A Mathematical Model for the Laminar Entrance Region of a Newtonian Fluid in a Cylindrical Pipe
(The American Society of Mechanical Engineers (ASME), 2020)This paper develops equations for velocity, pressure drop, and wall shear stress in the entrance or development region of a cylindrical pipe. The model quantifies the velocity and wall shear stress contributions to the ... -
Study of Unsteady Flow Through and Around an Array of Isolated Square Cylinders
(The American Society of Mechanical Engineers (ASME), 2020)Flow past a porous square cylinder, which is constituted by an array of small square cylinders, was studied by simplified and highly stable lattice Boltzmann method (LBM) at Re = 4000. The effects of solid volume fractions ... -
Drag on Janus Sphere in a Channel: Effect of Particle Position
(The American Society of Mechanical Engineers (ASME), 2020)Potential use of Janus spheres in novel engineering applications is being explored actively in recent years. Hydrodynamics around Janus spheres is different from that around homogeneous sticky or slippery spheres. Instantaneous ... -
Effect of Ground Boundary Condition on Near-Field Wingtip Vortex Flow and Lift-Induced Drag
(The American Society of Mechanical Engineers (ASME), 2020)The ground proximity is known to induce an outboard movement and suppression of the wingtip vortices, leading to a reduced lift-induced drag. Depending on the ground boundary condition, a large scatter exists in the published ... -
High Frequency Characteristics of the Near Wake and Vortex Past a Triangular Cylinder
(The American Society of Mechanical Engineers (ASME), 2020)The flow past a triangular cylinder is one of the fundamental flows and widely utilized in flame stabilization and heat transfer. In this study, the near wake and vortex characteristics of the flow past an equilateral ... -
Application of Wray–Agarwal Turbulence Model in Flow Simulation of a Centrifugal Pump With Semispiral Suction Chamber
(The American Society of Mechanical Engineers (ASME), 2020)The Wray–Agarwal (WA) turbulence model is selected to simulate the internal and external characteristics of a centrifugal pump with semispiral suction chamber; the numerical results are compared with the experimental data ...