Compensation of Pressure Disturbance for Flow Control Equipment without Pressure Sensor by Disturbance Model and IMC

2020 ◽  
Vol 56 (6) ◽  
pp. 327-332
Author(s):  
Kotaro TAKIJIRI ◽  
Yukio SAKAI ◽  
Toshiharu SUGIE
Keyword(s):  
Flow Control ◽  
Pressure Sensor ◽  
Pressure Disturbance ◽  
Control Equipment ◽  
Disturbance Model

Power flow control equipment

2014 ◽  
Author(s):  
Adrian Cotrus ◽  
Maricel Adam ◽  
Mihai Andrusca ◽  
Mihai Molodeschi ◽  
Razvan Pantelimon
Keyword(s):  
Flow Control ◽  
Power Flow ◽  
Power Flow Control ◽  
Control Equipment

Numerical and Microfluidic-Based Cell-Sorting Devices

2007 ◽  
Author(s):  
Jay K. Taylor ◽  
Carolyn L. Ren ◽  
G. D. Stubley
Keyword(s):  
Flow Field ◽  
Flow Control ◽  
Cell Sorting ◽  
High Efficiency ◽  
Lab On A Chip ◽  
Polymeric Materials ◽  
Chip Design ◽  
Pressure Disturbance ◽  
Chip Technology ◽  
Channel Blockage

The development of Lab-on-a-Chip devices with integrated bio-analysis functions requires a complex network of microfluidic transport and processes. Many of these functions call for the isolation or separation of specific bio-particles or cells. The design of a miniaturized cell-sorting device for handheld operation must follow the strict parameters associated with Lab-on-a-Chip technology. The limitations include applied voltage, high efficiency of cell-separation, repeatability, size, flow control, and cost, among others. Currently used designs have achieved successful levels of cell-isolation. However, further improvements in the microfluidic chip design are important for incorporation into larger systems. This study evaluates specific design modifications that contribute to the reduction of required applied potential aiming for developing portable devices, improved operation reliability by minimizing induced pressure disturbance when electrokinetic pumping is employed and incorporating online filters to reduce channel blockage, and improved flow control by incorporating directing streams achieving dynamic sorting and counting. The chip designs fabricated in glass and polymeric materials include asymmetric channel widths for sample focusing, nonuniform channel depth for minimizing induced pressure disturbance, directing streams to assist particle flow control, and online filters for reducing channel blockage. Fluorescence-based visualization of electrokinetic focusing, flow field phenomena, and dynamic cell-sorting demonstrate the advantages of the chip design. Numerical simulations in COMSOL are validated by the experimental data and used to investigate the effects of channel geometry and fluid properties on the flow field.

Predicting and Mitigating Erosion of Downhole Flow-Control Equipment in Water-Injector Completions

2004 ◽  
Author(s):  
Mark McCasland ◽  
Mark Barrilleaux ◽  
Huawen Gai ◽  
Ronnie Russell ◽  
David Schneider ◽  
...  
Keyword(s):  
Flow Control ◽  
Control Equipment

FLOW CONTROL ACTIVE AND REACTIVE POWER IN ELECTRIC NETWORKS

2016 ◽  
Vol 2016 (5) ◽  
pp. 61-63
Author(s):  
F.P. Govorov ◽  
◽  
V.F. Govorov ◽  
Keyword(s):  
Flow Control ◽  
Reactive Power ◽  
Electric Networks ◽  
Active And Reactive Power
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