Numerical analysis and linear theory of pulsatile flow in cylindrical deformable tubes: The testing of a numerical model for blood flow calculation

1982 ◽  
Vol 20 (1) ◽  
pp. 49-57 ◽  
Author(s):  
J. H. Gerrard
Keyword(s):  
Blood Flow ◽  
Numerical Analysis ◽  
Numerical Model ◽  
Linear Theory ◽  
Pulsatile Flow ◽  
Flow Calculation

A simplified mitral valve method for two-dimensional echo Doppler blood flow calculation: Validation in an open-chest canine model and initial clinical studies

1987 ◽  
Vol 113 (2) ◽  
pp. 335-340 ◽  
Author(s):  
Erik J. Meijboom ◽  
Suzanna Horowitz ◽  
Lilliam M. Valdes-Cruz ◽  
Douglas F. Larson ◽  
Nicolaas Bom ◽  
...  
Keyword(s):  
Blood Flow ◽  
Mitral Valve ◽  
Clinical Studies ◽  
Canine Model ◽  
Two Dimensional ◽  
Flow Calculation ◽  
Open Chest

Numerical Analysis of the Deterministic Stresses Associated to Impeller-Tongue Interactions in a Single Volute Centrifugal Pump

2019 ◽  
Vol 141 (9) ◽  
Author(s):  
J. M. Fernández Oro ◽  
J. González ◽  
R. Barrio Perotti ◽  
M. Galdo Vega
Keyword(s):  
Numerical Analysis ◽  
Numerical Model ◽  
Centrifugal Pump ◽  
Turbulence Intensity ◽  
Three Dimensional ◽  
Relevant Information ◽  
Three Dimensional Flow ◽  
Deterministic Analysis ◽  
Starting Point ◽  
Flow Features

In this paper, a deterministic stress decomposition is applied over the numerical three-dimensional flow solution available for a single volute centrifugal pump. The numerical model has proven in previous publications its robustness to obtain the impeller to volute-tongue flow interaction, and it is now used as starting point for the current research. The main objective has been oriented toward a detailed analysis of the lack of uniformity in the flow that the volute tongue promotes on the blade-to-blade axisymmetric pattern. Through this analysis, the fluctuation field may be retrieved and main interaction sources have been pinpointed. The results obtained with the deterministic analysis become of paramount interest to understand the different flow features found in a typical centrifugal pump as a function of the flow rate. Moreover, this postprocessing tool provides an economic and easy procedure for designers to compare the different deterministic terms, also giving relevant information on the unresolved turbulence intensity scales. Complementarily, a way to model the turbulent effects in a systematic way is also presented, comparing their impact on the performance with respect to deterministic sources in a useful framework, that may be applied for similar kinds of pumps.

scholarly journals Influence of foundation settlements in load redistribution on columns in a monitoring construction - Case Study

2010 ◽  
Vol 3 (3) ◽  
pp. 346-356 ◽  
Author(s):  
G. Savaris ◽  
P. H. Hallak ◽  
P. C. A. Maia
Keyword(s):  
Numerical Analysis ◽  
Numerical Model ◽  
Finite Elements ◽  
Load Distribution ◽  
Numerical Models ◽  
Normal Load ◽  
Finite Elements Method ◽  
Load Redistribution

The objective of this article is to present the results obtained in a study on the interaction between the behavior of the structure and the foundation settlements and verify the influence of normal load distribution on the columns. In this mechanism, known as structure soil interaction (SSI), as the building is constructed, a transfer of loads occurs from the columns which tend to settle more to those that tend to settle less. The study was conducted in a building which had its settlements monitored from the beginning of construction. For this purpose, a linear tridimensional numerical model was constructed and numerical analysis was performed, using the finite elements method. In these analyses, numerical models corre- sponding to the execution of each floor were used, considering the settlements measured in each stage of the construction. The results of analy- ses showed that the effect of SSI are significant for calculating the normal efforts on the columns, particularly on those located in the first floors.

Numerical Analysis of Blood Flow Through Artery with Elastic Wall of a Vessel

2016 ◽  
pp. 193-200 ◽  
Author(s):  
Wojciech Wolański ◽  
Bożena Gzik-Zroska ◽  
Kamil Joszko ◽  
Marek Gzik ◽  
Damian Sołtan
Keyword(s):  
Blood Flow ◽  
Numerical Analysis ◽  
Elastic Wall ◽  
Flow Through

Phasic Waveforms of Coronary Arterial and Venous Blood Flow Predicted by a Numerical Model of the Coronary Circulation

1990 ◽  
pp. 521-532 ◽  
Author(s):  
Hani N. Sabbah ◽  
Mohamed S. Hamid ◽  
Gary W. Rankin ◽  
Paul D. Stein
Keyword(s):  
Blood Flow ◽  
Numerical Model ◽  
Coronary Circulation ◽  
Venous Blood ◽  
Venous Blood Flow
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