Journal of Fluids Engineering: Recent submissions
Now showing items 2301-2320 of 9024
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Construction of Pump Turbine Characteristics at Any Specific Speed by Domain Partitioned Transformation
(The American Society of Mechanical Engineers (ASME), 2015)Pumpturbine characteristics are important for designing pumpedstorage plants and indispensable for simulating hydraulic transients, but are often not available in the preliminary design stage. Therefore, constructing a set ... -
Numerical Investigation of an Efficient Method (T Junction With Valve) for Producing Unequal Sized Droplets in Micro and Nano Fluidic Systems
(The American Society of Mechanical Engineers (ASME), 2015)We investigate an efficient method (Tjunction with valve) to produce nonuniform droplets in microand nanofluidic systems. The method relies on breakup of droplets in a Tjunction with a valve in one of the minor branches. ... -
A Modified Smoothed Particle Hydrodynamics Scheme to Model the Stationary and Moving Boundary Problems for Newtonian Fluid Flows
(The American Society of Mechanical Engineers (ASME), 2015)A robust modified weakly compressible smoothed particle hydrodynamics (WCSPH) method based on a predictive corrective scheme is introduced to model the fluid flows engaged with stationary and moving boundary. In this paper, ... -
Parametric Analysis and Optimization of Inlet Deflection Angle in Torque Converters1
(The American Society of Mechanical Engineers (ASME), 2015)The inlet deflection angle is an important blade design parameter with respect to both performance and manufacturability of torque converters. This study investigated the influence of the inlet deflection angle on the ... -
Solid Particle Erosion Downstream of an Orifice
(The American Society of Mechanical Engineers (ASME), 2015)The paper deals with solid particle erosion downstream of a sharpedged orifice commonly found in many chemical processing industries. The orifice is installed in a pipe that is long enough to ensure fully developed turbulent ... -
Discussion: “Correlations for Prediction of Pressure Gradient of Liquid–Liquid Flow Through a Circular Horizontal Pipe†[Dasari, A., Desamala, A. B., Ghosh, U. K., Dasmahapatra, A. K., and Mandal, T. K., 2014, ASME J. Fluids Eng., 136(7), p. 071302]
(The American Society of Mechanical Engineers (ASME), 2015)The comments present an assessment of formulations for frictional pressure gradient correlation of moderately viscous lubricating oil–water twophase flow through a horizontal pipe of 0.025 m internal diameter, which was ... -
Introducing Perturbations into Turbulent Wall Bounded Flow With Arrays of Long TiO2 Nanowires
(The American Society of Mechanical Engineers (ASME), 2015)A currently unexplored mechanical application of nanowires is nearwall active flow manipulation, with potential uses mixing and filtering chemicals, enhancing convective heat transfer, and reducing drag. Here, we present ... -
A Two Dimensional Multibody Integral Approach for Forces in Inviscid Flow With Free Vortices and Vortex Production
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, we propose an integral force approach for potential flow around twodimensional bodies with external free vortices and with vortex production. The method can be considered as an extension of the generalized ... -
A Model for an Acoustically Driven Microbubble Inside a Rigid Tube
(The American Society of Mechanical Engineers (ASME), 2015)A theoretical framework to model the dynamics of acoustically driven microbubble inside a rigid tube is presented. The proposed model is not a variant of the conventional Rayleigh–Plesset category of models. It is derived ... -
Compressible Liquid Impact Against a Rigid Body
(The American Society of Mechanical Engineers (ASME), 2015)Impingement of a water jet on a rigid wall and entry of a rigid body into water are subject to common effects of compressibility, occurring during a very short period. Thanks to order of magnitude estimates and application ... -
Erratum: “Vortex Dynamics in the Turbulent Wake of a Single Step Cylinder†[ASME Journal of Fluids Engineering, 2014, 136, p. 031205, DOI: 10.1115/1.4026196]
(The American Society of Mechanical Engineers (ASME), 2015)Figure 8 (a) t* = 0, (b) t* = 0.41, and (c) t* = 0.85 -
Roughness Corrections for the k–د‰ Shear Stress Transport Model: Status and Proposals
(The American Society of Mechanical Engineers (ASME), 2015)Various corrections were previously proposed to account for wall roughness with the k–د‰ and shear stress transport (SST) models. A simplified analysis, based upon the wall region analysis, is proposed to characterize ... -
Effects of System Rotation on Vortical Structure in Wall Turbulence
(The American Society of Mechanical Engineers (ASME), 2015)Direct numerical simulations (DNSs) of rotating turbulent Poiseuille flows are performed to study the effects of both cyclonic and anticyclonic system rotation on the kinematics of the quasistreamwise vortices. By using ... -
Numerical Study of the Laminar Flow Past a Rotating Square Cylinder at Low Spinning Rates
(The American Society of Mechanical Engineers (ASME), 2015)The fluid dynamic interaction between a uniform free stream flow and the rotation induced flow from a sharp edged body is numerically investigated. A twodimensional (2D) finite volume based computation is performed in this ... -
Turbulent Flow Over a Flat Plate Downstream of a Finite Height Perforated Plate
(The American Society of Mechanical Engineers (ASME), 2015)An experimental investigation was carried out to study the turbulent flow over a flat plate in a wind tunnel. The turbulence was generated by a plate with diamondshaped perforations mounted perpendicular to and on the ... -
Evaluation of a Thermal Tuft Probe for Turbulent Separating and Reattaching Flows
(The American Society of Mechanical Engineers (ASME), 2015)The validation and testing of a thermaltuft probe is described in detail. The thermal tuft consists of three parallel wires where the middle wire is heated and the two lateral wires act as resistance thermometers, thereby ... -
Computational Fluid Dynamics Investigation of Turbulent Flow Inside a Rotary Double External Gear Pump
(The American Society of Mechanical Engineers (ASME), 2015)This article presents a numerical investigation of 2D turbulent flow within a double external gear pump. The configuration of the inlet and outlet ports is determined such that the double gear pump acts like the combination ... -
Numerical Investigation of Channel Leak Geometry for Blast Overpressure Attenuation in a Muzzle Loaded Large Caliber Cannon
(The American Society of Mechanical Engineers (ASME), 2015)This study examines the effect of channel leak geometry on blast overpressure attenuation in the rear of a muzzleloaded large caliber cannon. Effects of three primary geometric parameters including leak volume as well as ... -
Near Wall Modeling for Trailing Edge Slot Film Cooling
(The American Society of Mechanical Engineers (ASME), 2015)Trailing edge slot film cooling is a widely used active cooling scheme for turbine blade trailing edges. Current ReynoldsAveraged Navier–Stokes (RANS) models are known to significantly overpredict the adiabatic effectiveness ... -
The Piezoelectric Valve Less Pump: Series and Parallel Connections
(The American Society of Mechanical Engineers (ASME), 2015)The piezoelectric valveless pump is an attractive device to be used as a micropump for low flow rates. In these pumps, the nozzle/diffuser elements that have a preferential flow direction replace conventional valves, to ...