Journal of Fluids Engineering: Recent submissions
Now showing items 1341-1360 of 9024
-
Theoretical Investigation on Inflow Between Two Rotating Disks
(The American Society of Mechanical Engineers (ASME), 2017)Mathematical relations are obtained for velocities and pressure distribution for a fluid entering the peripheral clearance of a pair of rotating concentric disks that converges and discharges through an opening at the ... -
Nondimensional Parameter for Characterization of Wall Shear Stress From Underexpanded Axisymmetric Impinging Jets
(The American Society of Mechanical Engineers (ASME), 2017)Wall shear stress is characterized for underexpanded axisymmetric impinging jets for the application of aerodynamic particle resuspension from a surface. Analysis of the flow field resulting from normally impinging ... -
Numerical Investigation of the Three-Dimensional Pressure Distribution in Taylor Couette Flow
(The American Society of Mechanical Engineers (ASME), 2017)An investigation is conducted on the flow in a moderately wide gap between an inner rotating shaft and an outer coaxial fixed tube, with stationary end-walls, by three-dimensional Reynolds-averaged Navier–Stokes (RANS) ... -
Experimental Investigation on Unstable Vibration Characteristics of Plates and Drag Torque in Open Multiplate Wet Clutch at High Circumferential Speed
(The American Society of Mechanical Engineers (ASME), 2017)The drag torque caused by the viscous shear in open multiplate wet clutches has been studied in most available literature whose focus is placed on low circumferential speed. However, the drag torque increases drastically ... -
Measurements of the Effects of Streamwise Riblets on Boundary Layer Turbulence
(The American Society of Mechanical Engineers (ASME), 2017)This study presents experimental results on the effects of riblets on the coherent structures of turbulence within a turbulent spot. The riblet spacings of the study correspond to 0.5 and 1.5 times the natural spacing of ... -
A Structural and Fluid-Flow Model for Mechanically Driven Peristaltic Pumping With Application to Therapeutic Drug Delivery
(The American Society of Mechanical Engineers (ASME), 2017)The primary focus of this research is the design of wall-driven peristaltic pumps based on first principles with minimal simplifying assumptions and implementation by numerical simulation. Peristaltic pumps are typically ... -
Experimental and Numerical Investigation of Blast Wave Interaction With a Three Level Building
(The American Society of Mechanical Engineers (ASME), 2017)The present work shows that weak blast waves that are considered as being harmless can turn to become fatal upon their reflections from walls and corners inside a building. In the experimental part, weak blast waves were ... -
Steady-State Heat-Flow Coupling Field of a High-Power Magnetorheological Fluid Clutch Utilizing Liquid Cooling
(The American Society of Mechanical Engineers (ASME), 2017)Compared with traditional speed regulation (SR) approaches like variable frequency and hydraulic coupling, magnetorheological clutch (MRC) provides a more superior solution for high-efficiency energy saving SR. However, ... -
Comparison of Large Eddy Simulation and Unsteady Reynolds-Averaged Navier–Stokes for Evaluation of Entropy Noise
(The American Society of Mechanical Engineers (ASME), 2017)This paper expands on the numerical simulation of entropy noise by performing a comparison of two commonly used models for resolving turbulent flow field: large eddy simulation (LES) and unsteady Reynolds-averaged Navier–Stokes ... -
Cloud Cavitating Flow That Surrounds a Vertical Hydrofoil Near the Free Surface
(The American Society of Mechanical Engineers (ASME), 2017)Unstable cavitation presents an important speed barrier for underwater vehicles such as hydrofoil craft. In this paper, the authors concern about the physical problem about the cloud cavitating flow that surrounds an ... -
Forcing Boundary-Layer Transition on a Single-Element Wing in Ground Effect
(The American Society of Mechanical Engineers (ASME), 2017)The transition from a laminar to turbulent boundary layer on a wing operating at low Reynolds numbers can have a large effect on its aerodynamic performance. For a wing operating in ground effect, where very low pressures ... -
Modeling and Experimental Studies on the Absorption of Entrained Gas and the Influence on Fluid Compressibility
(The American Society of Mechanical Engineers (ASME), 2017)The bulk modulus of hydraulic fluid is dependent on the quantity of entrained gas in the fluid. In this paper, an effective fluid bulk modulus model that captures dynamic gas absorption during pressure transients is derived ... -
Method for Fluid Flow Simulation of a Gerotor Pump Using OpenFOAM
(The American Society of Mechanical Engineers (ASME), 2017)A new approach based on the open source tool OpenFOAM is presented for the numerical simulation of a mini gerotor pump working at low pressure. The work is principally focused on the estimation of leakage flow in the ... -
Statistical Properties of Round, Square, and Elliptic Jets at Low and Moderate Reynolds Numbers
(The American Society of Mechanical Engineers (ASME), 2017)An experimental study was conducted to investigate the effect of nozzle geometries on the statistical properties of free orifice jets at low and moderate Reynolds numbers. The studied cross sections were round, square, and ... -
The Maximum Skin Friction and Flow Field of a Planar Impinging Gas Jet
(The American Society of Mechanical Engineers (ASME), 2017)The maximum skin friction and flow field are experimentally measured on a planar impinging gas jet using oil film interferometry (OFI) and particle image velocimetry (PIV), respectively. A jet nozzle width of W = 15 mm, ... -
Reverse Flow in Magnetoconvection of Two Immiscible Fluids in a Vertical Channel
(The American Society of Mechanical Engineers (ASME), 2017)This paper concerns the study of the influence of an external magnetic field on the reverse flow occurring in the steady mixed convection of two Newtonian immiscible fluids filling a vertical channel under the Oberbeck–Boussinesq ... -
On the Calibration of Irwin Probes for Flow in Rectangular Ducts With Different Aspect Ratios
(The American Society of Mechanical Engineers (ASME), 2017)In this work, the suitability of pressure probes, commonly known as Irwin probes, to determine the local wall shear stress was evaluated for steady turbulent flow in rectangular ducts. Pressure measurements were conducted ... -
Feature Correlation Velocimetry for Measuring Instantaneous Liquid Sheet Velocity
(The American Society of Mechanical Engineers (ASME), 2017)We describe a novel nonintrusive velocimetry technique for measuring the instantaneous velocity field on a liquid sheet. Short wavelength corrugations are naturally formed on the surface of a liquid sheet when the sheet ... -
Numerical and Experimental Analysis of Cavitating Flow in a Low Specific Speed Centrifugal Pump With Different Surface Roughness
(The American Society of Mechanical Engineers (ASME), 2017)Three-dimensional (3D) simulations with ansys cfx 16.1 as well as measurements of the cavitating flow in a low specific speed centrifugal pump (nq = 12 min−1) are performed for different operation conditions and varying ... -
Numerical Simulation of Heat Transfer Process of Viscoelastic Fluid Flow at High Weissenberg Number by Log-Conformation Reformulation
(The American Society of Mechanical Engineers (ASME), 2017)Viscoelastic fluids are now becoming promising candidates of microheat exchangers’ working medium due to the occurrence of elastic instability and turbulence at microscale. This paper developed a sound solver for the heat ...