Thermophysical properties of different olive oils: Evaluating density and rheology through a fluid dynamic approach

2017 ◽  
Vol 119 (7) ◽  
pp. 1600316 ◽  
Author(s):  
Elisa Franco Ribeiro ◽  
Tiago Carregari Polachini ◽  
Gisandro Reis Carvalho ◽  
Javier Telis Romero ◽  
Renato Alexandre Ferreira Cabral
Keyword(s):  
Thermophysical Properties ◽  
Fluid Dynamic ◽  
Dynamic Approach ◽  
Olive Oils

OPTIMIZATION OF TRAFFIC ON ROAD NETWORKS

2007 ◽  
Vol 17 (10) ◽  
pp. 1587-1617 ◽  
Author(s):  
CASCONE ANNUNZIATA ◽  
CIRO D'APICE ◽  
PICCOLI BENEDETTO ◽  
RARITÀ LUIGI
Keyword(s):  
Road Network ◽  
Fluid Dynamic ◽  
Distribution Coefficients ◽  
Dynamic Approach ◽  
Urban Network ◽  
Traffic Distribution ◽  
Cost Functionals ◽  
Traffic Behavior ◽  
Velocity Average

This paper focuses on the optimization of traffic flow on a road network, modeled by a fluid-dynamic approach. Three cost functionals that measure average velocity, average traveling time, and total flux of cars, are considered. First, such functionals are optimized for two simple networks that consist of a single junction: one with two incoming and one outgoing roads (junctions of 2 × 1 type), and the other with one incoming and two outgoing roads (junctions of 1 × 2 type). The optimization is made with respect to right of way parameters and traffic distribution coefficients, obtaining an explicit solution. Then, through simulations, the traffic behavior for complex networks is studied. The main result is that the local optimization ensures a very good result also for the complete network. This is shown by the case study of Re di Roma Square, a big traffic circle of the urban network of Rome.

Thermal Mixing Downstream of a 90-Degree T-Junction: Laminar and Turbulent Flows

2019 ◽  
Author(s):  
Bakhtier Farouk
Keyword(s):  
Turbulent Flows ◽  
Thermophysical Properties ◽  
Fluid Dynamic ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Inlet Temperature ◽  
Horizontal Pipe ◽  
Thermal Mixing ◽  
Large Eddy ◽  
Inlet Conditions

Abstract A three-dimensional time dependent computational fluid dynamic (CFD) study of laminar and turbulent thermal mixing of two flows entering a 90° T-junction pipe is presented. The two incoming flows (both liquids) in the T-junction enter the flow domain with different inlet velocities, and temperatures. Water flow is considered in both the horizontal pipe and the vertical pipe. Inlet temperature differences and temperature dependent thermophysical properties are considered. Large eddy simulations (LES) with sub-grid scale (SGS) modeling were considered for the simulation of the turbulent cases. The flow characteristics, and thermal mixing behaviors and detailed mixing structures were simulated, and they showed that thermal mixing of the two streams are closely affected by the inlet conditions of the two streams and the inlet thermophysical properties of the two streams.

scholarly journals Sonoelectrochemical hydrogenation of safrole: A reactor design, statistical analysis and computational fluid dynamic approach

2020 ◽  
Vol 63 ◽  
pp. 104949 ◽  
Author(s):  
Josinete Angela da Paz ◽  
Frederico Duarte de Menezes ◽  
Thiago Matheus Guimarães Selva ◽  
Marcelo Navarro ◽  
José Ângelo Peixoto da Costa ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Reactor Design ◽  
Dynamic Approach

Vascular Impedance Analysis in Human Pulmonary Circulation

2002 ◽  
Author(s):  
Qinlian Zhou ◽  
Jian Gao ◽  
Wei Huang ◽  
R. T. Yen
Keyword(s):  
Pulmonary Circulation ◽  
Fluid Dynamic ◽  
Main Pulmonary Artery ◽  
Pulmonary Arteries ◽  
Impedance Analysis ◽  
Impedance Matrix ◽  
Dynamic Approach ◽  
Vascular Impedance ◽  
Elastic Tubes ◽  
Arteries And Veins

Vascular impedance in human pulmonary circulation is analyzed by the fluid dynamic approach. A model representing the entire system of pulmonary circulation is constructed based on experimentally measured morphometric and elasticity data of the vessels. The pulmonary arteries and veins are considered as elastic tubes. Their impedance follows Womersley’s theory and electric analogue. The “sheet-flow” theory is employed to describe the flow in capillaries and thus a microvascular impedance matrix is derived. The input impedance at the main pulmonary artery is calculated under both zone 3 and zone 2 conditions. The results are compared with available experimental data in the literature.

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