Journal of Fluids Engineering: Recent submissions
Now showing items 501-520 of 9024
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Numerical Investigation of Flow Over Oscillating Cambered Foil at Low Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2022)This paper aims to investigate the effect of pitching amplitude, mean angle of attack and frequency of oscillation on the propulsive characteristics of a harmonically oscillating cambered airfoil at Reynolds number of ... -
Friction Factor Comparison Between Mixing Length Theory and Empirical Correlation
(The American Society of Mechanical Engineers (ASME), 2022)Equivalent sand grain roughness is required for estimating friction factor for engineering applications from empirical relation via Haalands equation. The real surfaces are different from the sand grain profile. The ... -
Stagnation Zone Near A Corner In Viscoplastic Fluid Flow
(The American Society of Mechanical Engineers (ASME), 2022)The shape, size and location of the stagnation zone between flat non-parallel walls that make up the corner of a tube with non-circular cross section through which a phase change material of the Bingham plastic type flows ... -
Investigation of the Flow Instabilities of a Low Specific Speed Pump Turbine Part 2: Flow Control With Fluid Injection
(The American Society of Mechanical Engineers (ASME), 2022)This is the second part of a two-part paper focusing on the flow instabilities of low-specific speed pump turbines. In this part, results of the flow control application with fluid injection in the vaneless space for ... -
Investigation of the Flow Instabilities of a Low Specific Speed Pump Turbine Part 1: Experimental and Numerical Analysis
(The American Society of Mechanical Engineers (ASME), 2022)This is the first part of a two-part paper focusing on the flow instabilities of pump turbines. In this first part, results of the experiments and computational fluid dynamics (CFD) simulations of the research carried out ... -
Magnetic Field Effects on Backward-Facing Step Flow of Ferrofluids
(The American Society of Mechanical Engineers (ASME), 2022)Backward-facing step (BFS) flow is a benchmark case study in fluid mechanics. Its control by means of electromagnetic actuation has attracted great interest in recent years. This paper focuses on the effects of a uniform ... -
Gas Flow in Occluded Respiratory Tree: A New Matrix-Based Approach
(The American Society of Mechanical Engineers (ASME), 2022)Studies suggest that both the size of airways and the number of bifurcations of the respiratory tree provide the best structural design to accomplish its function. However, constrictions and occlusions due to inflammation ... -
Topology Optimization and Experimental Validation of an Additively Manufactured U-Bend Channel
(The American Society of Mechanical Engineers (ASME), 2022)Serpentine channels are a common feature seen in heat ex-changer geometries. For example, they are present in midchord regions of gas turbine blades to prevent material failure at high turbine inlet temperatures. Due to ... -
Suppression of Cavitation Surge in Turbopump With Inducer by Reduced-Diameter Suction Pipe With Swirl Brake
(The American Society of Mechanical Engineers (ASME), 2022)Downsizing and high power density of turbopumps is achieved by increasing their rotational speed. Cavitation often becomes a problem while the influence of cavitation will be generally relieved by employing an inducer ... -
Features of the Flow of a Model Liquid Into a Medium With a Variable Degree of Rarefaction
(The American Society of Mechanical Engineers (ASME), 2022)Experimental results of observing ethanol microjets expiring into a highly rarefied medium (vacuum) through a nozzle are presented. The study of the process was carried out both at the horizontal and vertical liquid stream ... -
Dimensional Effects of Polymer Piezoelectric Films for Wind Energy Harvesting
(The American Society of Mechanical Engineers (ASME), 2022)Arrays of flexible polymer piezoelectric film cantilevers that mimic grass or leaves is a prospective idea for harvesting wind energy in urban areas, where the use of traditional technologies is problematic due to low wind ... -
Numerical Investigation of Negative Flow Characteristics in a Centrifugal Compressor With Vaned Diffuser and Internal Volute
(The American Society of Mechanical Engineers (ASME), 2022)Negative flow from the outlet through the volute, diffuser, and impeller to the inlet of the centrifugal compressor can occur continuously as a result of system accidents. A physical comprehension of negative flow dynamics ... -
Effect of Nozzle Outlet Type on the Flow Field Velocity and Impact Pressure of High-Pressure Water Jet Peening
(The American Society of Mechanical Engineers (ASME), 2022)Water jet peening can effectively improve the fatigue strength of metal materials, and the outlet shape of nozzle greatly affects the effect of water jet peening. In this paper, the effects of nozzle outlet shape on water ... -
Computational Fluid Dynamics and Noncomputational Fluid Dynamics Applications Under Life-Long Association With Professor Kirti (Karman) Ghia
(The American Society of Mechanical Engineers (ASME), 2022)Six legacy case problems in fluid dynamics (FD), computational fluid dynamics (CFD), and applied aerodynamics applications that were studied during 1988–1996 are presented here. These are examples of my work reflecting the ... -
Numerical Investigation of Aerosolization in the Venturi Dustiness Tester: Aerodynamics of a Particle on a Hill
(The American Society of Mechanical Engineers (ASME), 2022)Understanding particle detachment from surfaces is necessary to better characterize dust generation and entrainment. Previous work has studied the detachment of particles from flat surfaces. This work generalizes this to ... -
Numerical Modeling of Atmospheric Rime Ice Accretion on an Airfoil Using an Eulerian Approach
(The American Society of Mechanical Engineers (ASME), 2022)This paper presents an approach to numerically simulate the inherently unsteady rime ice accretion problem on a two-dimensional airfoil and elucidate the associated variations under different icing conditions. The airflow ... -
Insight Into the Interaction Between Flow Field and Acoustic Field of Turning Flow Into a Side Branch Against a Deadleg
(The American Society of Mechanical Engineers (ASME), 2022)Acoustic resonances in internal flows can cause noise, vibration, and even equipment damage. One geometry prone to acoustic resonance is a deadleg at the point where the main flow turns into a side branch. Here, we report ... -
An Active Flow Control Approach for Spatially Growing Mixing Layer1
(The American Society of Mechanical Engineers (ASME), 2022)A control approach is proposed in this study that controls the growth of a spatially growing mixing layer in an open loop. Due to the similarity of the mixing layer dynamics in the temporal and spatial domains, the control ... -
Scale-Resolving Simulations of a Statistically Targeted Forcing Method for Synthetic Turbulence Generation in a Freestream Turbulence
(The American Society of Mechanical Engineers (ASME), 2022)Computational fluid dynamics results for synthetic turbulence generation of freestream turbulence by a proposed statistically targeted forcing (STF) method are presented. The STF method has been previously documented for ... -
The Effect of Weber Number on Spray and Vaporization Characteristics of Liquid Jets Injected in Air Crossflow
(The American Society of Mechanical Engineers (ASME), 2022)This paper details a numerical investigation conducted to systematically evaluate the effects of aerodynamic Weber number, in the range from 68 to 136, on spray characteristics and gaseous fluid dynamics when liquid jets ...