Journal of Fluids Engineering: Recent submissions
Now showing items 201-220 of 8892
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Progress in Analytical Modeling of Water Hammer
(The American Society of Mechanical Engineers (ASME), 4/26/2023 )Analytical formulas for laminar water hammer in horizontal pipes were extended and simplified into a compact mathematical form based on dimensionless parameters: dimensionless time, water hammer number, etc. Detailed ... -
Fluidic Thrust Vector Control of Aerospace Vehicles: State-of-the-Art Review and Future Prospects
(The American Society of Mechanical Engineers (ASME), 4/3/2023 1)An efficient propulsion system holds the key to the smooth operation of any aerospace vehicle over different flight regimes. Apart from generating the necessary thrust, emphasis has also been laid on vectoring the direction ... -
Gas–Liquid Transport Behaviors and Mass Transfer Mechanism During Oxygen Dissolution and Evolution Processes in a Micropump
(The American Society of Mechanical Engineers (ASME), 3/20/2023 )On-orbit refueling and space circulation technologies involve the use of a space micropump to transport gas–liquid mixed fluids, which affects the gas–liquid mass transfer and dynamic behaviors. To predict dynamic mass ... -
Investigation of Flow Behavior of Turbulent Wall-Jet in the Viscous Shear Regime With Moving Wall Condition
(The American Society of Mechanical Engineers (ASME), 3/13/2023 )This work involves studying the effects of plate motion on the turbulent flow behavior of a wall jet stream flowing over a flat plate moving at a constant velocity in a quiescent atmosphere. A modified low-Reynolds-number ... -
Experimental Study of The Pressure-Time Method With Potential Application for Low-Head Hydropower
(The American Society of Mechanical Engineers (ASME), 3/24/2023 )The pressure-time method allows measuring the flowrate in hydraulic turbines, according to IEC 60041 standard. According to this standard, the applicability of the pressure-time method is limited to a straight pipe with a ... -
Numerical Simulation of Air-Core Surface Vortex at Critical Submergence for Dual Horizontal Intakes
(The American Society of Mechanical Engineers (ASME), 3/20/2023 )Air-entrainment from surface vortex at critical submergence for hydraulic intakes adversely affects the withdrawal efficiency and intake performance. In this study, flow at the lateral dual square bottom intake placed in ... -
Role of Secondary Ions on the i-v Characteristics of Oxyfuel Flame Subject to an Electric Field
(The American Society of Mechanical Engineers (ASME), 3/20/2023 )Recent use of ion currents as a sensing strategy in the mechanized oxyfuel cutting process motivated a series of studies which revealed that the steel work piece contributes secondary ions in addition to the primary ions ... -
Change in Cavitation Regime on NACA0015 Hydrofoil by Heating the Hydrofoil Surface
(The American Society of Mechanical Engineers (ASME), 3/13/2023 )An experimental study of cavitating flow on a heated NACA0015 hydrofoil was conducted in a cavitation tunnel to investigate the influence of the hydrofoil surface temperature on the cavitating flow. The cavitation behavior ... -
Onto Quantifying Unsteady Propulsion Characteristics Using Momentum and Energy Control Volume Assessments
(The American Society of Mechanical Engineers (ASME), 3/20/2023 )This effort presents a novel approach to interrogate efficiency for unsteady, undulating propulsion using variable momentum and energy conservation (VMEC) assessments. These integral approaches utilize large amounts of ... -
Prediction and Validation of Flow Properties in Porous Lattice Structures
(The American Society of Mechanical Engineers (ASME), 1/25/2023 )High-porosity metal foams have been extensively studied as an attractive candidate for efficient and compact heat exchanger design. With the advancements in additive manufacturing, such foams can be manufactured with ... -
On the Unsteady Rotationally Symmetric Flow Between a Stationary and a Finite Rotating Disk With a Given Change in the Axial Velocity
(The American Society of Mechanical Engineers (ASME), 1/4/2023 1)We consider the scenario of an unsteady viscous flow between two coaxial finite disks, one stationary and the other rotating with an axial velocity changing impulsively from zero to a constant value. The three-dimensional ... -
Large Eddy Simulation Study on the Relationship Between Large-Scale Turbulence Vortices and Unsteady Cavitation Around a Hydrofoil
(The American Society of Mechanical Engineers (ASME), 2/1/2023 1)We conducted a large eddy simulation (LES) of cavitating turbulent flow around a Clark-Y11.7% hydrofoil at an angle of attack of 8 deg. We focused on the improvement of the reproducibility of hydrofoil performance under ... -
Numerical and Experimental Investigation of Streamlines for Tandem Impeller in a Centrifugal Pump
(The American Society of Mechanical Engineers (ASME), 1/13/2023 )Radial fluid machines with conventional impeller often lead to flow separation in the blade passage in case of high flow deflection. Tandem blades can be used to counteract this problem. Due to their properties, a new thin ... -
Flow State at Impeller Inlet: Optimization of Conical Frustum Section of Elbow Inlet Conduit in Large Low-Lift Pump Station
(The American Society of Mechanical Engineers (ASME), 1/4/2023 1)In large low-lift pump stations, the pump assembly comprises an inlet conduit, a pump, and an outlet conduit. A short conical frustum section that connects the elbow section with the impeller inlet directly affects the ... -
Computational Fluid Dynamics Modeling of Gaseous Cavitation in Lubricating Vane Pumps: On Metering Grooves for Pressure Ripple Optimization
(The American Society of Mechanical Engineers (ASME), 12/21/2022)This paper addresses the topic of balanced vane pump simulations for pressure ripple optimization by means of metering grooves at the leading edge of delivery ports. It presents a computational fluid dynamics case study ... -
Numerical and Theoretical Investigation of the Gap Flow in Centrifugal Fans for Design and Off-Design Conditions
(The American Society of Mechanical Engineers (ASME), 12/21/2022)Industrial turbomachines, such as fans and blowers for drying, venting, cooling or conveying tasks, are often used in industrial applications and frequently are large energy consumers. Thus, there is a need for further ... -
Erratum: “Symmetric and Asymmetric Disturbances in the Rayleigh Zone of an Air-Assisted Liquid Sheet: Theoretical and Experimental Analysis,” ASME J. Fluid Eng., 2020, 142(7), p. 071302, DOI: 10.1115/1.4045998
(The American Society of Mechanical Engineers (ASME), 11/23/2022)An error occurs on Page 071302–3. The independent variable associated with the derivative of Ø1and Ø2 in Eqs. (6) and (7) is not described correctly.The right expressions for Eqs. (6) and (7) are (6)−(U1+∂Ø1∂x)∂η∂x+∂Ø1∂z ... -
Cavitation Modeling Using Lumped Parameter Approach Accounting for Bubble Dynamics and Mass Transport Through the Bubble Interface
(The American Society of Mechanical Engineers (ASME), 2023)Vaporous and gaseous cavitation cause several physical phenomena which are typically undesirable, such as reduction in compressibility and material damage. Therefore, the ability to capture these effects in simulation is ... -
Experimental Study of Turbulent Wake Flow Around Trapezoidal Cylinders With Varying Streamwise Aspect Ratios
(The American Society of Mechanical Engineers (ASME), 2023)The effects of streamwise aspect ratio (AR) on the asymmetric wake flow over and behind right-angled trapezoidal cylinders with AR (= upper cylinder length to height ratio) = 1, 2, 3, 4, and 5 were investigated using ... -
Numerical and Experimental Analysis of the Cold Flow Physics of a Nonpremixed Industrial Gas Burner
(The American Society of Mechanical Engineers (ASME), 2023)The flow field of a nonpremixed industrial gas burner is analyzed with Reynolds-averaged Navier–Stokes computational fluid dynamics validated against velocity and pressure measurements. Combustion is not modeled because ...