Mechanical Potential Drops at a Fluid Branch

1967 ◽  
Vol 89 (4) ◽  
pp. 732-736 ◽  
Author(s):  
S. Katz
Keyword(s):  
Secondary Flow ◽  
Flow Problem ◽  
Steady Flows ◽  
Equal Area ◽  
Tee Junction ◽  
Arbitrary Assumption

Separating and mixing steady flows are analyzed at a 90 deg equal area branch (TEE junction). An arbitrary assumption is made linking secondary flow forces to the turning momentum through an experimental constant. This constant is evaluated from the data of Vogel on TEE junctions and the data of Barton on pipe laterals. Expressions are derived for the mechanical potential drops at the branch. These expressions are then used to solve a simple branch flow problem.

Numerical Investigation of Deformable Hydrofoils in Steady Flows

2006 ◽  
Author(s):  
Antoine Ducoin ◽  
Franc¸ois Deniset ◽  
Thomas Damay ◽  
Jacques-Andre´ Astolfi ◽  
Christian Laine
Keyword(s):  
Numerical Investigation ◽  
Flow Problem ◽  
Structure Design ◽  
Elastic Behaviour ◽  
Steady Flows ◽  
Flow Conditions ◽  
Fluid Structure ◽  
Marine Structure ◽  
Structure Problem ◽  
Volume Method

The work is developed within the general frame of marine structure design. The study presents a numerical investigation of the hydro elastic behaviour of a deformable lifting body in a uniform steady flow. The fluid is considered as inviscid. The structure problem is solved by a finite element method and the flow problem is solved by a finite volume method using two commercial codes. Both problems are coupled through an iterative algorithm based on the exchange of boundary conditions at the flow-structure interface. The study is conducted on a cambered rectangular hydrofoil mounted in a hydrodynamic tunnel simulating the experiment that is currently performed in our laboratory. Results obtained from the fluid-structure computations including the deformation together with the hydrodynamic coefficients are presented. The influence of the fluid-structure coupling has been highlighted through comparisons with “non-coupled” simulations. Depending on the flow conditions, the twist of the hydrofoil together with the hydrodynamic loading are observed through the coupled simulation.

Axisymmetric steady flows in astrophysics

2003 ◽  
Vol 173 (11) ◽  
pp. 1247 ◽  
Author(s):  
Vasilii S. Beskin
Keyword(s):  
Steady Flows

Transient Stability Ranking Technique based on System Parameter Estimation and Extended Equal-Area Criterion

2008 ◽  
Vol 128 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Akira Takeuchi ◽  
Takashi Sato ◽  
Kouya Takafuji ◽  
Hideaki Nishiiri ◽  
Kotaro Takasaki ◽  
...  
Keyword(s):  
Parameter Estimation ◽  
System Parameter ◽  
Transient Stability ◽  
Equal Area ◽  
Stability Ranking ◽  
Ranking Technique
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