A spectral modelling approach for fluid flow into a line sink in a confined aquifer

2021 ◽  
pp. 1-22
Author(s):  
S. AL-ALI ◽  
G. C. HOCKING ◽  
D. E. FARROW ◽  
H. ZHANG
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Unsteady Flow ◽  
Spectral Method ◽  
Confined Aquifer ◽  
Line Sink ◽  
Finite Element Package ◽  
Modelling Approach

A spectral method is developed to study the steady and unsteady flow of fluid into a line sink from a horizontally confined aquifer, and the results are compared to solutions obtained implementing the finite element package COMSOLTM. The aquifer or drain is considered to be confined below so that the solutions are fundamentally unsteady. Comparison is made between the two methods in determining the drawdown of the surface.

The Flow Analysis and Numerical Simulation of the Time-Pressure Dispensing System

2013 ◽  
Vol 401-403 ◽  
pp. 504-508
Author(s):  
Luo Hong Deng ◽  
Zai Liang Chen ◽  
Xiao Min Yang ◽  
Zhen Yu Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Fluid Flow ◽  
Finite Element Modeling ◽  
Spectral Method ◽  
Time Pressure ◽  
Flow Analysis ◽  
Inlet Pressure ◽  
Element Modeling ◽  
Pressure Distributions

The fluid flow of the time-pressure dispensing system was analyzed. Dispensing fluid was analyzed by finite element modeling based on N-S equation. Use CFX module to simulate dispensing process, and obtain the flow fields corresponding velocity & pressure distributions. Study the change rules of the adhesive amount dispensed affected by the inlet pressure, diameter and length of the needle. Finally, compare simulation values with the spectral method for two order approximations, the reliability and applicability of the model is proved.

A Hybrid Finite-Element/Finite-Difference Scheme for Solving the 3-D Energy Equation in Transient Nonisothermal Fluid Flow over a Staggered Tube Bank

2015 ◽  
Vol 68 (2) ◽  
pp. 169-183 ◽  
Author(s):  
Seyyed Mahmood Aboulhasan Alavi ◽  
Mohammad Reza Safaei ◽  
Omid Mahian ◽  
Marjan Goodarzi ◽  
Hooman Yarmand ◽  
...  
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Finite Difference ◽  
Difference Scheme ◽  
Finite Difference Scheme ◽  
Energy Equation ◽  
Tube Bank ◽  
Hybrid Finite Element ◽  
Nonisothermal Fluid

Engineering Analysis of Shoulder Dystocia in the Human Birth Process by the Finite Element Method

1992 ◽  
Vol 206 (4) ◽  
pp. 243-250 ◽  
Author(s):  
A Meghdari ◽  
R Davoodi ◽  
F Mesbah
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Shoulder Dystocia ◽  
Point Of View ◽  
Engineering Analysis ◽  
The Finite Element Method ◽  
Birth Process ◽  
Beam Elements ◽  
Finite Element Package ◽  
Human Birth

This paper presents an engineering analysis of shoulder dystocia (SD) in the human birth process which usually results in damaging the brachial plexus nerves and the humerus and/or clavicle bones of the baby. The goal is to study these injuries from the mechanical engineering point of view. Two separate finite element models of the neonatal neck and the clavicle bone have been simulated using eight-node three-dimensional elements and beam elements respectively. Simulated models have been analysed under suitable boundary conditions using the ‘SAP80’ finite element package. Finally, results obtained have been verified by comparing them with published clinical and experimental observations.

Revealing Mechanical Strength of Nanopores Using Atomic Finite Element Techniques

2018 ◽  
Vol 934 ◽  
pp. 24-29
Author(s):  
Prapasiri Pongprayoon ◽  
Attaphon Chaimanatsakun
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Finite Element ◽  
Fluid Flow ◽  
Mechanical Strength ◽  
Impact Force ◽  
Pore Surface ◽  
Vertical Rectangle ◽  
The Impact ◽  
Graphene Nanopore

Graphene nanopore has been widely employed in nanofilter or nanopore devices due to its outstanding properties. The understanding of its mechanical properties at nanoscale is crucial for device improvement. In this work, the mechanical properties of graphene nanopore is thus investigated using atomistic finite element method (AFEM). Four graphene models with different pore shapes (circular (CR), horizontal rectangle (RH), and vertical rectangle (RV)) in sub-nm size which could be successfully fabricated experimentally have been studied here. The force normal to a pore surface is applied to mimic the impact force due to a fluid flow. Increasing pore size results in the reduction in its strength. Comparing among different pore shapes with comparable sizes, the order of pore strength is CR>RH>RV>SQ. In addition, we observe that the direction of pore alignment and geometries of pore edge also play a key role in mechanical strength of nanopores.

Finite Element Modeling of Fluid Flow, Heat Transfer, and Melting of Biomaterials in a Single-screw Extruder

2006 ◽  
Vol 69 (5) ◽  
pp. E212-E223 ◽  
Author(s):  
L.J. Wang ◽  
G.M. Ganjyal ◽  
D.D. Jones ◽  
C.L. Weller ◽  
M.A. Hanna
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Fluid Flow ◽  
Finite Element Modeling ◽  
Screw Extruder ◽  
Element Modeling ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Flow Heat
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