scholarly journals Three-Dimensional Computational Fluid Flow Analysis of Bio-inspired Corrugated wing at Low Reynolds Number.

2022 ◽  
pp. 45-50
Author(s):  
N Lakshmi Narasimhan ◽  
Jayendra Rajanala ◽  
Y.D. Dwivedi
Keyword(s):  
Fluid Flow ◽  
Computational Analysis ◽  
Computational Study ◽  
Flow Behavior ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Secondary Flows ◽  
Aeshna Cyanea ◽  
Fluid Flow Analysis ◽  
Computational Fluid Flow

A computational study was performed to analyze the airflow over bio-inspired corrugated wings. The bio-inspired corrugated wing profiles were derived from the mid-span section of the forewing of Aeshna Cyanea dragonfly species. Additionally, a hybrid non-corrugated profile was also created possessing geometric similarities with the corrugated airfoils to compare and visualize the effects of corrugation on the fluid flow. The computational analysis was conducted for 4,8-, and 12-degrees angles of attack. Streamlines obtained from the computational analysis results (carried out on ANSYS CFX) showed the formation of secondary flows or vortices that are trapped in the valleys of the corrugated wings which was not observed in the hybrid airfoil. This study also compares the effects of corrugation geometry on fluid flow behavior. It was also seen that the intensity and quantity of the secondary flows increased with the increase in the angle of attack.

Three Dimensional Dynamic Analysis of a Piezoelectric Valveless Micropump: Effects of Working Fluid

2012 ◽  
Author(s):  
Ersin Sayar ◽  
Bakhtier Farouk
Keyword(s):  
Fluid Flow ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Piezoelectric Element ◽  
Working Fluid ◽  
Working Fluids ◽  
Valveless Micropump ◽  
Velocity Flow ◽  
Layer Membrane ◽  
Fluid Flow Analysis

Coupled structural and fluid flow analysis of a piezoelectric valveless micropump is carried out for liquid transport applications. The valveless micropump consists of trapezoidal prism inlet/outlet elements; the pump chamber, a thin structural layer (Pyrex glass) and a piezoelectric element (PZT-5A), as the actuator. Two-way coupling of forces and displacements between the solid and the liquid domains in the systems are considered where actuator deflection and motion causes fluid flow and vice-versa. Flow contraction and expansion (through the trapezoidal prism inlet and outlet respectively) generates net fluid flow. The pressure, velocity, flow rate and pump membrane deflections of the micropump are investigated for six different working fluids (acetone, methanol, ethanol, water, and two hypothetical fluids). For the compressible flow formulation, an isothermal equation of state for the working fluid is employed. Three-dimensional governing equations for the flow fields and the structural-piezoelectric bi-layer membrane motions are considered. Comparison of the pumping characteristics of the micropumps operating with different working fluids can be utilized to optimize the design of MEMS based micropumps in drug delivery and biomedical applications.

Microscale fluid flow analysis in a human osteocyte canaliculus using a realistic high-resolution image-based three-dimensional model

2012 ◽  
Vol 4 (10) ◽  
pp. 1198-1206 ◽  
Author(s):  
Hiroshi Kamioka ◽  
Yoshitaka Kameo ◽  
Yuichi Imai ◽  
Astrid D. Bakker ◽  
Rommel G. Bacabac ◽  
...  
Keyword(s):  
Fluid Flow ◽  
High Resolution ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Resolution Image ◽  
High Resolution Image ◽  
Fluid Flow Analysis

scholarly journals A Study on Spanwise Length of Rectangular Cylinder for Three Dimensional Fluid Flow Analysis.

2000 ◽  
pp. 447-452 ◽  
Author(s):  
Hirokazu HIRANO ◽  
Shigeru WATANABE ◽  
Akira MARUOKA ◽  
Ken-ichi SANO
Keyword(s):  
Fluid Flow ◽  
Flow Analysis ◽  
Three Dimensional ◽  
Rectangular Cylinder ◽  
Fluid Flow Analysis
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