THE CONCOMITANT-EFFECT OF ELECTRORHEOLOGICAL FLUID IN A CONTROL FLOW FIELD

2005 ◽  
Author(s):  
Shi-sha ZHU ◽  
Toyohisa FUJITA ◽  
Qi-xin WANG ◽  
Kejun LIU ◽  
Gjergj DODBIBA
Keyword(s):  
Flow Field ◽  
Electrorheological Fluid ◽  
Control Flow

THE CONCOMITANT-EFFECT OF ELECTRORHEOLOGICAL FLUID IN A CONTROL FLOW FIELD

2005 ◽  
Vol 19 (07n09) ◽  
pp. 1263-1269 ◽  
Author(s):  
Shi-sha ZHU ◽  
Toyohisa FUJITA ◽  
Qi-xin WANG ◽  
Kejun LIU ◽  
Gjergj DODBIBA
Keyword(s):  
Flow Field ◽  
Power Transmission ◽  
Electrorheological Fluid ◽  
Control Flow ◽  
Fluid Power ◽  
Control Technology ◽  
Capture Effect ◽  
Shearing Flow ◽  
Er Fluid ◽  
Research Show

The description of ER response in a flow field is a key issue in researching control technology of ER fluid. In this paper, an experimental work on controlling flow field in fluid power transmission has been carried out. The results of research show that the control flow field differs from the rotary shearing flow field in an experimental instrument. Besides the ER effect there is a concomitant-effect of ER response called "capture effect" in the field, which is unbeneficial to the control on fluid power transmission.

Visualization System of Swirl Motion

2004 ◽  
Author(s):  
Katsuyuki Nakayama ◽  
Kenji Umeda ◽  
Toshio Ichikawa ◽  
Teruyuki Nagano ◽  
Hideyuki Sakata
Keyword(s):  
Vector Field ◽  
Flow Field ◽  
Particle Image ◽  
Swirling Flow ◽  
Flow Analysis ◽  
Control Flow ◽  
Design Flow ◽  
Visualization System ◽  
Image Velocimetry ◽  
Instantaneous Flow Field

An instrumentation of system composed of experimental device and numerical analysis is presented to visualize flow and identify swirling motion. Experiment is performed with transparent material and PIV (Particle Image Velocimetry) instrumentation, by which velocity vector field is obtained. This vector field is then analyzed numerically by “swirling flow analysis”, which estimate its velocity gradient tensor and the corresponding eigenvalue (swirling function). As an instantaneous flow field in steady/unsteady states is captured by PIV, the flow field is analyzed, and existence of vortices or swirling motions and their locations are identified in spite of their size. In addition, intensity of swirling is evaluated. The analysis enables swirling motion to emerge, even though it is hidden in uniform flow and velocity filed does not indicate any swirling. This visualization system can be applied to investigate condition to control flow or design flow.

The Response Performance of Electrorheological Fluids in a Control Flow Field

2005 ◽  
Vol 6 (3) ◽  
pp. 25-31 ◽  
Author(s):  
Shisha Zhu ◽  
Kexiang Wei ◽  
Qixin Wang ◽  
Yijian Huang
Keyword(s):  
Flow Field ◽  
Control Flow ◽  
Electrorheological Fluids ◽  
Response Performance

Numerical Study of the Combined Free-Forced Convection and Mass Transfer Flow Past a Vertical Porous Plate in a Porous Medium with Heat Generation and Thermal Diffusion

2006 ◽  
Vol 11 (4) ◽  
pp. 331-343 ◽  
Author(s):  
M. S. Alam ◽  
M. M. Rahman ◽  
M. A. Samad
Keyword(s):  
Mass Transfer ◽  
Flow Field ◽  
Differential Equations ◽  
Forced Convection ◽  
Heat Generation ◽  
Numerical Study ◽  
Porous Plate ◽  
Integration Scheme ◽  
Suction Parameter ◽  
Transfer Flow

The problem of combined free-forced convection and mass transfer flow over a vertical porous flat plate, in presence of heat generation and thermaldiffusion, is studied numerically. The non-linear partial differential equations and their boundary conditions, describing the problem under consideration, are transformed into a system of ordinary differential equations by using usual similarity transformations. This system is solved numerically by applying Nachtsheim-Swigert shooting iteration technique together with Runge-Kutta sixth order integration scheme. The effects of suction parameter, heat generation parameter and Soret number are examined on the flow field of a hydrogen-air mixture as a non-chemical reacting fluid pair. The analysis of the obtained results showed that the flow field is significantly influenced by these parameters.

ATOMIZATION CHARACTERISTICS OF LIQUID JETS INJECTED INTO A HIGH-VELOCITY FLOW FIELD

1994 ◽  
Vol 4 (4) ◽  
pp. 451-471 ◽  
Author(s):  
Nobuyuki Yatsuyanagi ◽  
Hiroshi Sakamoto ◽  
Kazuo Sato
Keyword(s):  
Flow Field ◽  
High Velocity ◽  
Liquid Jets ◽  
High Velocity Flow ◽  
Velocity Flow ◽  
Atomization Characteristics
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