scholarly journals Nonlocal flow effects in bushfire spread rates

2006 ◽  
Vol 234 ◽  
pp. S93 ◽  
Author(s):  
John Dold ◽  
Anna Zinoviev ◽  
Rodney Weber
Keyword(s):  
Flow Effects ◽  
Nonlocal Flow

FLOW EFFECTS AND MODELING IN GAS-COOLED QUENCHING

1998 ◽  
Author(s):  
Mats Lind ◽  
Noam Lior ◽  
Fritz H. Bark ◽  
Farid Alavyoon
Keyword(s):  
Flow Effects

Numerical Investigation on the Effect of Vortex Generator on Axial Compressor Performance

2014 ◽  
Author(s):  
Ruchika Agarwal ◽  
Anand Dhamarla ◽  
Sridharan R. Narayanan ◽  
Shraman N. Goswami ◽  
Balamurugan Srinivasan
Keyword(s):  
Cross Flow ◽  
Axial Compressor ◽  
Vortex Generator ◽  
Side Surface ◽  
Suction Side ◽  
Test Case ◽  
Stall Margin ◽  
Layer Flow ◽  
Flow Effects ◽  
End Wall

The performance of the compressor blade is considerably influenced by secondary flow effects, like the cross flow on the end wall as well as corner flow separation between the wall and the blade. The present work is focused on the studying the effects of Vortex Generator (VG) on NASA Rotor 37 test case using Computational Fluid Dynamics (CFD). VG helps in controlling the inception of the stall by generating vortices and energizes the low momentum boundary layer flow which enhances the rotor performance. Three design configuration namely, Counter-rotating, Co-rotating and Plow configuration VG are selected based on the improved aerodynamic performance discussed in reference [1]. These VG are located at 90% span and 42% chord on suction side surface of the blade. Among the three configurations, the first configuration has greater impact on the end wall cross flow and flow deflection which resulted in enhanced numerical stall margin of 5.4% from baseline. The reasons for this numerical stall margin improvement are discussed in detail.

Curvature bound for a curve flow with a prescribed rate of change in enclosed area

2018 ◽  
Vol 29 (08) ◽  
pp. 1850053
Author(s):  
Jianbo Fang ◽  
Shengliang Pan ◽  
Yunlong Yang
Keyword(s):  
Rate Of Change ◽  
Partial Answer ◽  
Curvature Bound ◽  
Curve Flow ◽  
Nonlocal Flow

This paper deals with the curvature bound for a nonlocal curve flow with a prescribed rate of change in enclosed area via Andrews–Bryan’s distance comparison. As a by-product, a partial answer to a conjecture given by Dallaston and McCue is obtained and the [Formula: see text] convergence of the curvature for the nonlocal flow is achieved.

Dynamic Simulation of Blood Flow Effects on Flexible Manipulators During Intra-Cardiac Procedures on the Beating Heart

2011 ◽  
Author(s):  
A. Salimi ◽  
J. Mohammadpour ◽  
K. Grigoriadis ◽  
N. V. Tsekos
Keyword(s):  
Blood Flow ◽  
Degrees Of Freedom ◽  
Beating Heart ◽  
Flexible Manipulator ◽  
External Disturbances ◽  
Actuation System ◽  
Cardiac Procedures ◽  
Rigid Body Model ◽  
Flow Effects ◽  
Valve Implantation

In this paper, we develop a numerical mixed flexible-rigid body model to take into account the effects of the external disturbances acting on a flexible manipulator secondary to the oscillatory transmitral blood flow in the left ventricle. The manipulator is made of a flexible rubber-like material to further extend the surgical robotic-based catheters’ degrees of freedom and steer-ability in beating-heart prosthetic aortic valve implantation procedure. Along with the developed numerical model, a detailed description of the catheter’s mechanical architecture and the actuation system is also provided. Necessity of employing such a model for the designed system is clearly justified using simulation studies.

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