Stratified flow past a prolate spheroid

2019 ◽  
Vol 4 (9) ◽  
Author(s):  
Jose L. Ortiz-Tarin ◽  
K. C. Chongsiripinyo ◽  
S. Sarkar
Keyword(s):  
Stratified Flow ◽  
Prolate Spheroid ◽  
Flow Past

A note on the asymmetry of rotating, stratified flow past a shallow ridge

1993 ◽  
Vol 5 (12) ◽  
pp. 3293-3295
Author(s):  
Kiran B. Chilakamarri ◽  
M. R. Foster ◽  
Peter Hamburger
Keyword(s):  
Stratified Flow ◽  
Flow Past ◽  
The Asymmetry

A DDES study of the flow past a prolate spheroid using a high-order U-MUSCL scheme

2020 ◽  
Vol 34 (14n16) ◽  
pp. 2040075
Author(s):  
Yu-Chen Yang ◽  
Zhen-Ming Wang ◽  
Ning Zhao
Keyword(s):  
Flow Separation ◽  
Vortex Structure ◽  
Prolate Spheroid ◽  
High Order ◽  
Detached Eddy Simulation ◽  
Complex Flow ◽  
Eddy Simulation ◽  
Flow Past ◽  
Delayed Detached Eddy Simulation ◽  
Flow Phenomena

Flow past a prolate spheroid, which is a representative simplified configuration for vehicles such as maneuvering ships, submarines and missiles, comprises a series of complex flow phenomena including pressure-induced flow separation, which results in unsteady forces and movements that may be detrimental to vehicles’ performance. In this paper, a Delayed Detached Eddy Simulation (DDES) method combined with a new high-order U-MUSCL scheme is proposed to more precisely and accurately capture the flow separation and vortex structure. This method is applied to simulate the aerodynamic performance of the 6:1 prolate spheroid at an AOA of [Formula: see text] with the Reynolds number of [Formula: see text]. Axial pressure distribution of five individual chord wise sections and flow field structure of the aft body are analyzed. Numerical results agree well with the experimental data. It can be concluded that DDES combined with three-order U-MUSCL scheme demonstrates reliable performance since it captures the vortex structure of aft body distinctly and predicts the separation and reattachment points of the secondary vortex precisely.

Studying the Blood Plasma Flow past a Red Blood Cell with the Mathematical Method of Kelvin's Transformation

2014 ◽  
Vol 2 (1) ◽  
pp. 57-66
Author(s):  
Maria Hadjinicolaou ◽  
Eleftherios Protopapas
Keyword(s):  
Blood Cell ◽  
Blood Plasma ◽  
Stream Function ◽  
Plasma Flow ◽  
Red Blood Cell ◽  
Fluid Velocity ◽  
Prolate Spheroid ◽  
Mathematical Tool ◽  
Flow Past ◽  
Analytical Expressions

A mathematical tool, namely the Kelvin transformation, has been employed in order to derive analytical expressions for important hydrodynamic quantities, aiming to the understanding and to the study of the blood plasma flow past a Red Blood Cell (RBC). These quantities are the fluid velocity, the drag force exerted on a cell and the drag coefficient. They are obtained by employing the stream function ? which describes the Stokes flow past a fixed cell. The RBC, being a biconcave disk, has been modelled as an inverted prolate spheroid. The stream function is given as a series expansion in terms of Gegenbauer functions, which converge fast. Therefore we employ only the first term of the series in order to derive simple and ready to use analytical expressions. These expressions are important in medicine, for studying, for example the transportation of oxygen, or the drug delivery to solid tumors.

Stratified flow past a sphere

1992 ◽  
Vol 240 (-1) ◽  
pp. 315 ◽  
Author(s):  
Q. Lin ◽  
W. R. Lindberg ◽  
D. L. Boyer ◽  
H. J. S. Fernando
Keyword(s):  
Stratified Flow ◽  
Flow Past ◽  
Flow Past A Sphere

Analytic representation of an axisymmetric incompressible viscous flow past a prolate spheroid

2007 ◽  
Vol 52 (1) ◽  
pp. 44-46 ◽  
Author(s):  
Yu. D. Shmyglevskiĭ ◽  
A. V. Shcheprov ◽  
P. A. Shcheprov
Keyword(s):  
Viscous Flow ◽  
Prolate Spheroid ◽  
Analytic Representation ◽  
Flow Past ◽  
Incompressible Viscous Flow
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