نتایج جستجو برای: inner tube flow

تعداد نتایج: 643521  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Mari Murakami Naoya Jinno Masahiko Hashimoto Kazuhiko Tsukagoshi

When ternary mixed solutions of water-hydrophilic/hydrophobic organic solvents are fed into a microspace under laminar flow conditions, the solvent molecules are radially distributed in the microspace. The specific fluidic behavior of the solvents is termed "tube radial distribution phenomenon" (TRDP). In this study, water-acetonitrile-ethyl acetate mixed solutions (3:8:4 volume ratio) containi...

B. Raei F. Shahraki M. Jamialahmadi S.M. Peyghambarzadeh

In this paper, overall heat transfer coefficient and friction factor of water based γ-Al2O3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. For better dispersion of γ-Al2O3 nanoparticles in distilled water, magnetic stirrer and ultrasonic vibrator (with a power of 240 kW and frequency of 35 kHz) were implemented. The stabi...

Journal: :transport phenomena in nano and micro scales 0
b. raei department of chemical engineering, university of sistan and baluchestan, zahedan 98164-161, i. r.iran f. shahraki department of chemical engineering, university of sistan and baluchestan, zahedan 98164-161, i. r.iran m. jamialahmadi petroleum engineering department, petroleum university of technology, ahwaz, i. r. iran s.m. peyghambarzadeh department of chemical engineering, mahshahr branch, islamic azad university, mahshahr, i. r.iran

in this paper, overall heat transfer coefficient and friction factor of water based γ-al2o3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. for better dispersion of γ-al2o3 nanoparticles in distilled water, magnetic stirrer and ultrasonic vibrator (with a power of 240 kw and frequency of 35 khz) were implemented. the stabi...

A. Ghannadiasl, M. Babaei, Y. Mohammadi,

Tubular structural systems are one of the most common types of systems in high-rise structures. In the early days of this system, there were imperfections in its design which were overcome over time. The most important modification to rectify these defects is the use of a series of internal frames in addition to the peripheral frames and new systems in the center of the plan to eliminate design...

2010
M. Venkatesan Sarit K. Das

The effect of tube diameter on two-phase flow patterns was investigated in circular tubes with inner diameters of 0.6, 1.2, 1.7, 2.6, and 3.4mm using air and water. The gas and liquid superficial velocity ranges were 0.01–50 and 0.01–3m/s, respectively. The gas and liquid flow rates were measured and the two-phase flow pattern images were recorded using high-speed CMOS camera. The flow patterns...

2014
R. S. Hassani S. Chikh L. Tadrist S. Radev

A bubbly flow in a vertical miniature tube is analyzed theoretically. The liquid and gas phase are co-current flowing upward. The gas phase is injected via a nozzle whose inner diameter is 0.11mm and it is placed on the axis of the tube. A force balance is applied on the bubble at its detachment. The set of governing equations are solved by use of Mathematica software. The bubble diameter and t...

2008
Xueming Shao Zhaosheng Yu Bo Sun

The inertial migration of spherical particles in a circular Poiseuille flow is numerically investigated for the tube Reynolds number up to 2200. The periodic boundary condition is imposed in the streamwise direction. The equilibrium positions, the migration velocity, and the angular velocity of a single particle in a tube cell are examined at different Reynolds numbers, particle-tube size ratio...

Journal: :journal of agricultural science and technology 2013
j. p. liu s. q. yuan h. li x. y. zhu

due to the complex structure of the pressure-adjusting device used in most sprinklersfor variable irrigation, it is not possible to observe the flow behavior of the water passingthrough the flow field. in this paper, an integral three dimensional (3d) numerical modelbased on the structural characteristics of the fluidic sprinkler was constructed to simulatethe flow field distribution using comp...

Journal: :Science and Technology for the Built Environment 2017

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