Browsing Physics & Mathematics by Issue Date
Now showing items 21-40 of 63
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Performances and Rotating Flows of Rotary Jet Pump
(Scientific Research, 2012-11)The rotary jet pumps, namely the pitot pumps, are composed of the rotating casing with the impeller channels and the stationary pick-up tube for discharging, are known as the one of high pressure pumps in the U.S. market. ... -
Effects of Orbital Motion on the Boundary Layer Flow on a Spinning Disk
(Scientific Research, 2012-12)The objective of this study is to experimentally examine the effects of orbital motion on the boundary layer flow on a spinning disk. The boundary layer flow on the disk is visualized by the oil flow method, and velocity ... -
A Computational Study of the Gas-Solid Suspension Flow through a Supersonic Nozzle
(Scientific Research, 2012-12)The present study focuses on numerical simulation of the gas-solid suspension flow in a supersonic nozzle. The Euler- Lagrange approach using a Discrete Phase Model (DPM) has been used to solve the compressible Navier-Stokes ... -
Analysis on Physical Mechanism of Sound Generation inside Cavities Based on Acoustic Analogy Method
(Scientific Research, 2013-03)Analysis of coupling aerodynamics and acoustics are performed to investigate the self-sustained oscillation and aerodynamic noise in two-dimensional flow past a cavity with length to depth ratio of 2 at subsonic speeds. ... -
A New Surfactant Flooding Model for Low Permeability Reservoirs
(Scientific Research, 2013-03)Surfactant as a successful Enhanced Oil Recovery (EOR) agent has been widely used in many mature reservoirs. This research focuses on the description of surfactant solution at low permeability condition. A new three-dimensional, ... -
Development of Analytical Model for Modular Tank Vehicle Carrying Liquid Cargo
(2013-04)The study of dynamics of tank vehicles carrying liquid fuel cargo is complex. The forces and moments due to liquid sloshing create serious problems related to the instability of tank vehicles. In this paper, a complete ... -
Study on the Relationship between Aspects, Orientation,Type, and Unit Position toward to Indoor Air Quality in Flat
(Scientific Research, 2013-05)Thermal factor is one of the main factors of the green building concept. The purpose of this research is to test building performance through design aspect that influences thermal comfort, the design aspects include: ... -
Study of the Different Factors That Influence Jet Pump Performance
(Scientific Research, 2013-06)The objective of this work is to study experimentally the characteristics of jet pump. Suction head, driving air pressure and the percentage of the distance between throat section and nozzle are recorded. The effect of ... -
Drilling Operation and Formation Damage
(Scientific Research, 2013-06)Transport of particle suspensions in oil reservoirs is an essential phenomenon in many oil industry processes. Solid and liquid particles dispersed in the drilling fluid (mud) are trapped by the rock (porous medium) and ... -
The Research of Performance Comparison of Displacement and Mixing Ventilation System in Catering Kitchen
(Scientific Research, 2013-07)A commercial kitchen is a complicated environment where multiple components of a ventilation system including hood exhaust, conditioned air supply, and makeup air systems work together but not always in unison. And the ... -
Effect of Hub-Ratio on Performance of Asymmetric Dual-Rotor Small Axial Fan
(Scientific Research, 2013-07)Currently, domestic and abroad scholars put more attention on contra-rotating dual-rotor axial fan. But there is less scholars study on asymmetric dual-rotor small axial fan, which is one of the contra-rotating dual-rotor ... -
Linear, Cubic and Quintic Coordinate-Dependent Forces and Kinematic Characteristics of a Spring-Mass System
(2013-09)By combining a pair of linear springs we devise a nonlinear vibrator. For a one dimensional scenario the nonlinear force is composed of a polynomial of odd powers of position-dependent variable greater than or equal three. ... -
Effect of Beam Length and Braced Length on Moment-Rotation Behavior of Castellated Beams
(Scientific Research, 2013-09)The presence of web openings in castellated beams introduces different modes of failure at the perforated sections such as excessive stresses in tee-sections, excessive stresses in mid-depth of the web post, web-post ... -
Improvement of Open-Circuit Voltage in Organic Photovoltaic Cells with Chemically Modified Indium-Tin Oxide
(Scientific research, 2013-12)The possibility of the increase in open-circuit voltage of organic photovoltaic cells based primarily indium-tin oxide (ITO)/rubrene/fullerene/Al structure by changing the work function of ITO anodes and Al cathodes was ... -
Simulation of Average Turbulent Pipe Flow: A Three-Equation Model
(Scientific Research, 2014-03)The aim of this study is to evaluate a three-equation turbulence model applied to pipe flow. Uncertainty is approximated by comparing with published direct numerical simulation results for fully-developed average pipe flow. ... -
Novel Power Law of Turbulent Spectrum
(Scientific Research, 2014-06)This paper is concerned with novel power law of turbulent energy spectrum and the relevant experiment in tidal current. The power law in the inertial sub-range has been proposed in such a way that the power of the ... -
A Foundation for Lorentz Force Based on Vibrating Strings as a Compact Fluid
(Scientific research, 2014-08)Several aspects related with Lorentz force are discussed in the light of the presence of vibrating strings. Strings are considered as a compact, tension and viscosity-free incompressible liquid. The motion of a charge ... -
Weis-Fogh Mechanism Mathematic Model of Wave Power Generation Device
(Scientific Research, 2014-12)A Weis-Fogh mechanism wave power generation system is designed, its physical model and mathematical model are discussed, and the component expressions of fluid dynamic expression are derived. Adopting numerical integral ... -
Impact of the Housing on the Air Flow and the Thermal Behavior of an Automotive Clutch System
(Scientific Research, 2015-03)New directives and increasing competition push automakers to get better performances (engine power increase), along with mass and size reduction (consumption). These evolutions lead to an increase of the thermal solicitations ... -
Experimental and Numerical Investigations on Plate-Type Heat Exchanger Performance
(Scientific Research, 2015-03)Low-grade Thermal Energy Conversion (LTEC) is a potential source of renewable energy. One of its forms is the Ocean Thermal Energy Conversion (OTEC) in which the temperature difference between the warm surface water and ...