scholarly journals A time-dependent interface stability during directional solidification of a single phase alloy(Ⅱ)Comparison with experimental results

2004 ◽  
Vol 53 (11) ◽  
pp. 3978
Author(s):  
Huang Wei-Dong ◽  
Lin Xin ◽  
Li Tao ◽  
Wang Lin-Lin ◽  
Y. Inatomi
Keyword(s):  
Directional Solidification ◽  
Single Phase ◽  
Experimental Results ◽  
Time Dependent ◽  
Interface Stability ◽  
Single Phase Alloy

scholarly journals Time-dependent interface stability during directional solidification of a single phase alloy(Ⅰ) Theoritical

2004 ◽  
Vol 53 (11) ◽  
pp. 3971
Author(s):  
Lin Xin ◽  
Li Tao ◽  
Wang Lin-Lin ◽  
Su Yun-Peng ◽  
Huang Wei-Dong
Keyword(s):  
Directional Solidification ◽  
Single Phase ◽  
Time Dependent ◽  
Interface Stability ◽  
Single Phase Alloy

Random Forces Resulting From Internal Two-Phase Flow on Bends and Tees

2006 ◽  
Author(s):  
E. de Langre ◽  
J. L. Riverin ◽  
M. J. Pettigrew
Keyword(s):  
Two Phase Flow ◽  
Experimental Results ◽  
Time Dependent ◽  
Phase Flow ◽  
Water Mixture ◽  
Dimensionless Form ◽  
Two Phase ◽  
Practical Applications ◽  
Random Forces

The time dependent forces resulting from a two-phase air-water mixture flowing in an elbow and a tee are measured. Their magnitudes as well as their spectral contents are analyzed. Comparison is made with previous experimental results on similar systems. For practical applications a dimensionless form is proposed to relate the characteristics of these forces to the parameters defining the flow and the geometry of the piping.

Improved Load Sharing Control Techniques for Inverters used in a Microgrid

2009 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Yao ◽  
Zhaoming Qian
Keyword(s):  
Steady State ◽  
Transient Response ◽  
Single Phase ◽  
Load Sharing ◽  
Power Sharing ◽  
Experimental Results ◽  
Control Technique ◽  
Transient Performance ◽  
Control Techniques ◽  
Control Scheme

In this paper, an improved load sharing control scheme is presented, which is able to improve the transient response and power sharing accuracy of parallel-connected inverters used in microgrid. It also shows how the improved droop method can be easily adapted to account for the operation of parallel-connected inverters, providing good performance under the variation and disturbance of loads, as well as achieving good steady-state objectives and transient performance. Two DSP-based single-phase Microgrid inverters are designed and implemented. Simulation and experimental results are all reported, confirming the validity of the proposed control technique.

Two-phase and single phase models of flow of nanofluid in a square cavity: Comparison with experimental results

2016 ◽  
Vol 100 ◽  
pp. 372-380 ◽  
Author(s):  
M. Ziad Saghir ◽  
Amirhossein Ahadi ◽  
Tooraj Yousefi ◽  
Bahram Farahbakhsh
Keyword(s):  
Single Phase ◽  
Experimental Results ◽  
Square Cavity ◽  
Two Phase ◽  
Phase Models

A multi-scale analysis of the residual stresses developed in a single-phase alloy cylinder after quenching

2018 ◽  
Vol 137 ◽  
pp. 117-127 ◽  
Author(s):  
R. Fernández ◽  
S. Ferreira-Barragáns ◽  
J. Ibáñez ◽  
G. González-Doncel
Keyword(s):  
Residual Stresses ◽  
Single Phase ◽  
Scale Analysis ◽  
Single Phase Alloy ◽  
Multi Scale ◽  
Multi Scale Analysis

Numerical Investigation for Performance Enhancement of Photovoltaic Cell by Nanofluid Cooling

2022 ◽  
pp. 1-32
Author(s):  
Hassan Salem ◽  
Ehab Mina ◽  
Raouf Abdelmessih ◽  
Tarek Mekhail
Keyword(s):  
Heat Transfer ◽  
Particle Size ◽  
Single Phase ◽  
Performance Enhancement ◽  
Photovoltaic Cell ◽  
System Optimization ◽  
Experimental Results ◽  
Key Factor ◽  
Discrete Phase ◽  
Frame Work

Abstract The cooling fluid is a key factor in cooling photovoltaic (PV) panels especially in the case of concentrated irradiance. Maintaining the panel at low temperature increases its efficiency. This paper investigates the usage of water-Al2O3 as a nanofluid for achieving the required cooling process. The particle concentrations and sizes are investigated to record their effect on heat transfer and pressure drop in the developing and developed regions. The research was performed using ANSYS CFD software with two different approaches: the single phase with average properties, and the discrete phase with the Eulerian-Lagrangian frame-work. Both approaches are compared to experimental results found in the literature. Both approaches show good agreement with the experimental results, with some advantage for the single-phase model both in processing time and in predicting heat transfer in the concentration range of 1-6% by volume. It was shown that, the heat transfer coefficient is greatly enhanced by increasing the particle concentration or decreasing the particle size. On the other hand, the usage of nanofluid causes a severe increase in the pumping power, especially with the increase in concentration and the reduction in particle size. Thus, a system optimization was suggested in order to raise the overall system efficiency for photovoltaic applications.

Prediction of the FOM FEM experimental results using multi-mode time-dependent simulations

1998 ◽  
pp. 45-49
Author(s):  
M. Caplan ◽  
W.A. Bongers ◽  
M. Valentini ◽  
W.H. Urbanus ◽  
A.G.A. Verhoeven ◽  
...  
Keyword(s):  
Experimental Results ◽  
Time Dependent ◽  
Multi Mode
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