3D numerical analysis of the effect of various geometric parameters of EATHEs under steady condition

2019 ◽  
Author(s):  
Masud Rana ◽  
Md. Emran Hossain ◽  
Md. Kabbir Hossain ◽  
Arafat A. Bhuiyan
Keyword(s):  
Numerical Analysis ◽  
Geometric Parameters ◽  
Steady Condition

Interaction Effects of Micronozzle Geometric Parameters on Propulsion Performance

2014 ◽  
Vol 609-610 ◽  
pp. 734-739
Author(s):  
Xiao Ping Li ◽  
Wei Zheng Yuan ◽  
Qiang Shen ◽  
Jian Bing Xie ◽  
Hong Long Chang
Keyword(s):  
Numerical Analysis ◽  
Numerical Experiments ◽  
Design Method ◽  
Interaction Effects ◽  
Geometric Parameters ◽  
Optimal Parameters ◽  
Propulsion Performance ◽  
Practical Design ◽  
First Time ◽  
Effective Design

This paper reports an effective design method for optimizing the geometric parameters of a micronozzle. Numerical analysis is conducted to predict the propulsion performance of micronozzles. By means of design of experiment (DOE), the number of numerical experiments is reduced dramatically from 1024 to 16. The interaction effects of the geometric parameters are taken into consideration for the first time. The results indicate that the interaction effects of geometric parameters cannot be neglected in choosing the optimal parameters for a practical design.

scholarly journals Numerical Analysis of Bridge Girder with Composite Dowel Shear Connection

2017 ◽  
Vol 27 (4) ◽  
pp. 55-65 ◽  
Author(s):  
Piotr Lacki ◽  
Jacek Nawrot
Keyword(s):  
Numerical Analysis ◽  
Numerical Model ◽  
Cross Section ◽  
Composite Beams ◽  
Geometric Parameters ◽  
Concrete Bridge ◽  
Shear Connection ◽  
Cutting Line ◽  
Bridge Girder ◽  
Steel Section

Abstract The work presents a brief description of VFT-WIB® steel-concrete composite beams, examples of composite dowel shear connection shapes are presented. A steel-concrete bridge girder construction solution for the new shape of composite dowel shear connection was proposed. The geometric parameters of the steel section web cutting line are given. For the assumed cross-section dimensions, a numerical model of the girder was made. Numerical analysis was performed, the results of which were compared with the results of the analytical calculations. A program of actions aimed at further optimization of the model is presented.

Lectin-Induced RBC Agglutination: Chemical vs. Cryofixation

1980 ◽  
Vol 38 ◽  
pp. 664-665
Author(s):  
Dean A. Handley ◽  
Lanping A. Sung ◽  
Shu Chien
Keyword(s):  
Lectin Binding ◽  
Freeze Substitution ◽  
Electrostatic Charge ◽  
Geometric Parameters ◽  
Comparative Approach ◽  
Chemical Fixation ◽  
Cell Surfaces ◽  
Minimal Cell ◽  
Membrane Stiffness ◽  
Cell Contour

RBC agglutination by lectins represents an interactive balance between the attractive (bridging) force due to lectin binding on cell surfaces and disaggregating forces, such as membrane stiffness and electrostatic charge repulsion (1). During agglutination, critical geometric parameters of cell contour and intercellular distance reflect the magnitude of these interactive forces and the size of the bridging macromolecule (2). Valid ultrastructural measurements of these geometric parameters from agglutinated RBC's require preservation with minimal cell distortion. As chemical fixation may adversely influence RBC geometric properties (3), we used chemical fixation and cryofixation (rapid freezing followed by freeze-substitution) as a comparative approach to examine these parameters from RBC agglutinated with Ulex I lectin.

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