**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**11

# velocity Related Publications

##### 11 Computational Study of Blood Flow Analysis for Coronary Artery Disease

**Authors:**
K. M. Pandey,
Radhe Tado,
Ashish B. Deoghare

**Abstract:**

The aim of this study is to estimate the effect of blood flow through the coronary artery in human heart so as to assess the coronary artery disease.Velocity, wall shear stress (WSS), strain rate and wall pressure distribution are some of the important hemodynamic parameters that are non-invasively assessed with computational fluid dynamics (CFD). These parameters are used to identify the mechanical factors responsible for the plaque progression and/or rupture in left coronary arteries (LCA) in coronary arteries.The initial step for CFD simulations was the construction of a geometrical model of the LCA. Patient specific artery model is constructed using computed tomography (CT) scan data with the help of MIMICS Research 19.0. For CFD analysis ANSYS FLUENT-14.5 is used.Hemodynamic parameters were quantified and flow patterns were visualized both in the absence and presence of coronary plaques. The wall pressure continuously decreased towards distal segments and showed pressure drops in stenotic segments. Areas of high WSS and high flow velocities were found adjacent to plaques deposition.

**Keywords:**
Computational Fluid Dynamics,
Wall Pressure,
strain rate,
velocity,
wall shear stress,
hemodynamics

##### 10 Experimental Study on Using the Aluminum Sacrificial Anode as a Cathodic Protection for Marine Structures

**Authors:**
A. Radwan,
A. Elbatran,
A. Mehanna,
M. Shehadeh

**Abstract:**

**Keywords:**
Corrosion,
velocity,
sacrificial anode,
Reynoldâ€™s numbers

##### 9 Spectral Investigation for Boundary Layer Flow over a Permeable Wall in the Presence of Transverse Magnetic Field

**Authors:**
Mehran Nikarya,
Saeed Sarabadan,
Kouroah Parand

**Abstract:**

**Keywords:**
velocity,
skin friction,
Bessel functions,
nonlinear ODE,
MHD Falkner-Skan,
spectral
collocation method

##### 8 Soil Moisture Regulation in Irrigated Agriculture

**Authors:**
I. Kruashvili,
I. Inashvili,
K. Bziava,
M. Lomishvili

**Abstract:**

Seepage capillary anomalies in the active layer of soil, related to the soil water movement, often cause variation of soil hydrophysical properties and become one of the main objectives of the hydroecology. It is necessary to mention that all existing equations for computing the seepage flow particularly from soil channels, through dams, bulkheads, and foundations of hydraulic engineering structures are preferable based on the linear seepage law. Regarding the existing beliefs, anomalous seepage is based on postulates according to which the fluid in free volume is characterized by resistance against shear deformation and is presented in the form of initial gradient. According to the above-mentioned information, we have determined: Equation to calculate seepage coefficient when the velocity of transition flow is equal to seepage flow velocity; by means of power function, equations for the calculation of average and maximum velocities of seepage flow have been derived; taking into consideration the fluid continuity condition, average velocity for calculation of average velocity in capillary tube has been received.

**Keywords:**
Water,
Soil,
velocity,
seepage

##### 7 Measurements of Radial Velocity in Fixed Fluidized Bed for Fischer-Tropsch Synthesis Using LDV

**Authors:**
Xiaolai Zhang,
Weiyong Ying,
Haitao Zhang,
Weixin Qian,
Qiwen Sun

**Abstract:**

**Keywords:**
velocity,
Fixed fluidized bed,
LDV,
Fischer-Tropsch
synthesis

##### 6 The Effect of Impinging WC-12Co Particles Temperature on Thickness of HVOF Thermally Sprayed Coatings

**Authors:**
M. Jalali Azizpour,
H. Mohammadi majd

**Abstract:**

In this paper, the effect of WC-12Co particle temperature in HVOF thermal spraying process on the coating thickness has been studied. The statistical results show that the spray distance and oxygen-to-fuel ratio are effective factors on particle characterization and thickness of HVOF thermal spraying coatings. Spray Watch diagnostic system, scanning electron microscopy (SEM), X-ray diffraction and thickness measuring system were used for this purpose.

**Keywords:**
temperature,
velocity,
HVOF,
thickness,
WC-
12Co

##### 5 Assessment of the Response of Seismic Refraction Tomography and Resistivity Imaging to the Same Geologic Environment: A Case Study of Zaria Basement Complex in North Central Nigeria

**Authors:**
Collins C. Chiemeke,
I. B. Osazuwa,
Ibe S. O.,
Egwuonwu G. N.,
Ani C. D.,
Chii E. C.

**Abstract:**

The study area is Zaria, located in the basement complex of northern Nigeria. The rock type forming the major part of the Zaria batholith is granite. This research work was carried out to compare the responses of seismic refraction tomography and resistivity tomography in the same geologic environment and under the same conditions. Hence, the choice of the site that has a visible granitic outcrop that extends across a narrow stream channel and is flanked by unconsolidated overburden, a neutral profile that was covered by plain overburden and a site with thick lateritic cover became necessary. The results of the seismic and resistivity tomography models reveals that seismic velocity and resistivity does not always simultaneously increase with depth, but their responses in any geologic environment are determined by changes in the mechanical and chemical content of the rock types rather than depth.

**Keywords:**
Environment,
Seismic,
response,
resistivity,
velocity

##### 4 Experimental Study of Submersible Jet on Flow Hydraulic Parameters

**Authors:**
Mohsen Solimani Babarsad,
Habib Musavi Jahromi

**Abstract:**

Behavior of turbulent jet is relying on jet parameters, environmental and geometric parameters. In this research, it has attempt to Study effect of jet parameters of internal angle on maximum effective length and velocity on centerline from nozzle experimentally. Toward this end, four internal angles 30, 45, 60 and 90-degree are considered for this study in a flume with 600cm as long, 100cm as high and 150cm in width. Various discharges were used to evaluate effective length for a wide range of densimetric Froude numbers F0, from 17.9 to 39.4 that is defined at the nozzle. As a result, It is revealed that both velocity on centerline and effective length decreases when nozzle angle decreased from 90° to 30°. The results show that, for all range of Fr0 the Um/U0 ratio for nozzle with α=90° on centerline increases 20% - 27% than nozzle with α=30° that has lowest velocity on centerline than other nozzle.

**Keywords:**
velocity,
effective length,
turbulent jet,
Froude
number

##### 3 Determination of Seismic Wave of Consolidated Granite Rock in Penang Island: UltrasonicTesting Method Vs Seismic Refraction Method

**Authors:**
Mohd Hafiz Musa,
Zulfadhli Hasan Adli,
M . N . Khairul Arifin

**Abstract:**

**Keywords:**
velocity,
granite,
shear wave,
Compressional wave

##### 2 A Meta-Heuristic Algorithm for Set Covering Problem Based on Gravity

**Authors:**
S. Raja Balachandar,
K. Kannan

**Abstract:**

A new Meta heuristic approach called "Randomized gravitational emulation search algorithm (RGES)" for solving large size set covering problems has been designed. This algorithm is found upon introducing randomization concept along with the two of the four primary parameters -velocity- and -gravity- in physics. A new heuristic operator is introduced in the domain of RGES to maintain feasibility specifically for the set covering problem to yield best solutions. The performance of this algorithm has been evaluated on a large set of benchmark problems from OR-library. Computational results showed that the randomized gravitational emulation search algorithm - based heuristic is capable of producing high quality solutions. The performance of this heuristic when compared with other existing heuristic algorithms is found to be excellent in terms of solution quality.

**Keywords:**
combinatorial optimization,
velocity,
set covering problem,
gravitational force,
Newton's Law,
Meta Heuristic

##### 1 A Meta-Heuristic Algorithm for Vertex Covering Problem Based on Gravity

**Authors:**
S. Raja Balachandar,
K.Kannan

**Abstract:**

A new Meta heuristic approach called "Randomized gravitational emulation search algorithm (RGES)" for solving vertex covering problems has been designed. This algorithm is found upon introducing randomization concept along with the two of the four primary parameters -velocity- and -gravity- in physics. A new heuristic operator is introduced in the domain of RGES to maintain feasibility specifically for the vertex covering problem to yield best solutions. The performance of this algorithm has been evaluated on a large set of benchmark problems from OR-library. Computational results showed that the randomized gravitational emulation search algorithm - based heuristic is capable of producing high quality solutions. The performance of this heuristic when compared with other existing heuristic algorithms is found to be excellent in terms of solution quality.

**Keywords:**
combinatorial optimization,
velocity,
gravitational force,
Vertex covering Problem,
Newton's Law,
Meta Heuristic