Interpolation method for preparation of input data of water depth in finite element analysis of shallow water flow

1985 ◽  
Vol 2 (4) ◽  
pp. 266-270 ◽  
Author(s):  
Kazuo Kashiyama ◽  
Mutsuto Kawahara
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Shallow Water ◽  
Water Flow ◽  
Water Depth ◽  
Input Data ◽  
Interpolation Method ◽  
Shallow Water Flow ◽  
Element Analysis

Performance Evaluation of a Valveless Micropump Considering Electro-Structural-Fluid Interaction

2007 ◽  
Vol 345-346 ◽  
pp. 749-752
Author(s):  
Kwang Chul Lee ◽  
Nam Seo Goo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Performance Evaluation ◽  
Water Flow ◽  
Comsol Multiphysics ◽  
Structural Domain ◽  
Element Analysis ◽  
Flow Rates ◽  
Valveless Micropump ◽  
Fluid Interaction

In this paper, the pumping performance of a piezoelectric micropump is simulated with commercial finite element analysis (FEA) software COMSOL Multiphysics 3.2a. The micropump is composed of a 4-layer piezo-composite actuator (LIPCA), a polydimethylsiloxane (PDMS) pump chamber, and two diffusers. The piezoelectric domain, structural domain and fluid domain are coupled in the simulation. Water flow rates are numerically predicted for geometric parameters of the micropump. Based on this study, the micropump is optimally designed to obtain its better pumping performance.

Selective lumping finite element method for shallow water flow

1982 ◽  
Vol 2 (1) ◽  
pp. 89-112 ◽  
Author(s):  
Mutsuto Kawahara ◽  
Hirokazu Hirano ◽  
Khoji Tsubota ◽  
Kazuo Inagaki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Shallow Water ◽  
Water Flow ◽  
Shallow Water Flow ◽  
Element Method

scholarly journals A Parametric Study of Coupled Hydromechanical Behaviors Induced by Shallow Water Flow in Shallow Sediments in Deepwater Drilling Based on Numerical Modeling

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Xuyang Guo ◽  
Yan Jin ◽  
Botao Lin
Keyword(s):  
Finite Element ◽  
Shallow Water ◽  
Water Flow ◽  
Finite Element Methods ◽  
Flow In Porous Media ◽  
Water Production ◽  
Shallow Water Flow ◽  
Deepwater Drilling ◽  
Shallow Sediments ◽  
Pressure Stress

Shallow water flow is a geohazard encountered in deepwater drilling. It is often characterized by excessive water flow into the wellbore caused by the pressure difference between overpressured sediments and the wellbore, and it usually leads to serious well control problems and may eventually result in the loss of a well. Many research efforts focused on the identification of shallow water flow zones and the associated water flow in the drilled wellbore. Not many studies investigated the coupled hydromechanical behaviors in sediments during the occurrence of shallow water flow, while such behaviors are directly related to uncontrolled flow in the wellbore and solid deformation. Based on a coupled hydraulic-mechanical model and finite element methods, this work investigates the temporal-spatial evolutions of near-well pressure and stress induced by shallow water flow. Hydraulic behaviors in the deepwater shallow sediments are described by saturated fluid flow in porous media while mechanical behaviors in the sediments are depicted by linear elasticity. Finite element methods are used for the numerical solution to the coupled hydraulic-mechanical formulation. The study then conducts a series of parametric studies to quantitatively understand the effects of relevant parameters on pressure, stress, and uncontrolled flow into the wellbore. Results indicate that overpressure has the most significant impact while Young’s modulus has the most limited impact on spatial-temporal pressure/stress evolutions and the uncontrolled water production in the wellbore. Permeability, porosity, water viscosity, and water compressibility all have certain effects on near-well physical characteristics and wellbore water production. In addition, it is noted that pressure drainage and induced stress are more significant when it is closer to the wellbore. This numerical study helps to quantitatively identify the most influential parameters related to shallow water flow and calculates the water mass flow loaded in the wellbore.

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