scholarly journals Multi dimensional PIV Measurement of internal flow in a levitated droplet

2008 ◽  
Vol 28-1 (1) ◽  
pp. 411-411
Author(s):  
Yuji YAMAMOTO
Keyword(s):  
Internal Flow ◽  
Piv Measurement ◽  
Levitated Droplet

scholarly journals PIV measurement of internal flow in a levitated droplet

2007 ◽  
Vol 27 (Supplement1) ◽  
pp. 235-236
Author(s):  
Yutaka ABE ◽  
Yuji YAMAMOTO ◽  
Daisuke HYUGA ◽  
Shigeru AWAZU
Keyword(s):  
Internal Flow ◽  
Piv Measurement ◽  
Levitated Droplet

scholarly journals Stereo PIV Measurement on Incipient Mechanism of Internal Flow in an Acoustically Levitated Droplet

2009 ◽  
Vol 29-1 (1) ◽  
pp. 235-235
Author(s):  
Akiko KANEKO ◽  
Yuji YAMAMOTO ◽  
Koji HASEGAWA ◽  
Yutaka ABE
Keyword(s):  
Internal Flow ◽  
Piv Measurement ◽  
Levitated Droplet

scholarly journals The Design Method of Axial Flow Runners Focusing on Axial Flow Velocity Uniformization and Its Application to an Ultra-Small Axial Flow Hydraulic Turbine

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Yasuyuki Nishi ◽  
Yutaka Kobayashi ◽  
Terumi Inagaki ◽  
Norio Kikuchi
Keyword(s):  
Flow Velocity ◽  
Performance Test ◽  
Design Method ◽  
Axial Flow ◽  
Internal Flow ◽  
Hydraulic Turbine ◽  
Small Rivers ◽  
Axial Component ◽  
Turbine Efficiency ◽  
Piv Measurement

We proposed a portable and ultra-small axial flow hydraulic turbine that can generate electric power comparatively easily using the low head of open channels such as existing pipe conduits or small rivers. In addition, we proposed a simple design method for axial flow runners in combination with the conventional one-dimensional design method and the design method of axial flow velocity uniformization, with the support of three-dimensional flow analysis. Applying our design method to the runner of an ultra-small axial flow hydraulic turbine, the performance and internal flow of the designed runner were investigated using CFD analysis and experiment (performance test and PIV measurement). As a result, the runners designed with our design method were significantly improved in turbine efficiency compared to the original runner. Specifically, in the experiment, a new design of the runner achieved a turbine efficiency of 0.768. This reason was that the axial component of absolute velocity of the new design of the runner was relatively uniform at the runner outlet in comparison with that of the original runner, and as a result, the negative rotational flow was improved. Thus, the validity of our design method has been verified.

Advances in Design Methods and Characteristics of Internal Flow for Centrifugal Pumps

2010 ◽  
Author(s):  
Shouqi Yuan ◽  
Jianping Yuan ◽  
Houlin Liu ◽  
Yue Tang ◽  
Jinfeng Zhang ◽  
...  
Keyword(s):  
Unsteady Flow ◽  
Pressure Pulsation ◽  
Design Method ◽  
Internal Flow ◽  
Design Methods ◽  
Centrifugal Pumps ◽  
Flow Induced Vibration ◽  
Hydraulic Design ◽  
Piv Measurement ◽  
Engineering And Technology

Centrifugal pump is widely used in various fields of the national economy. Pumps, of which 70% are centrifugal pumps, consume 20.9% of the total electricity generation nationwide in China in 2009, according to the statistics. In this paper, the research advances in design methods and characteristics of internal flow fields for centrifugal pumps, carried out by the Research Center of Fluid Machinery Engineering and Technology of Jiangsu University, is introduced. First of all, the Greater Flow Design method, Non-Overload Design method and Splitter Blade Offset Design method are fully discussed through systematically studies. In addition, three methods of performance prediction for centrifugal pumps are adopted, and a CAD/CFD software for hydraulic design and analysis is initially developed. Secondly, to deepen the understanding of characteristics of internal flow in centrifugal pumps, the numerical simulation and PIV measurement investigation have been done. Then the unsteady flow induced vibration and noise are studied considering fluid-structure interaction and fluid-sound interaction. The control of the unsteady flow in centrifugal pumps is also attempted to optimize the design method for centrifugal pumps. In addition, the pressure pulsation and vibration behaviors under both cavitation and non-cavitation conditions are obtained and analyzed. Finally, some detecting methods and criterion for cavitation incipiency and development are put forward.

GS0511 Internal flow and oscillations of an electrostatically levitated droplet

2016 ◽  
Vol 2016.22 (0) ◽  
pp. _GS0511-1_-_GS0511-2_
Author(s):  
Masaharu NOGUCHI ◽  
Soma WATAHIKI ◽  
Satoshi MATSUMOTO ◽  
Tetsuya KANAGAWA ◽  
Akiko KANEKO ◽  
...  
Keyword(s):  
Internal Flow ◽  
Levitated Droplet

PIV Measurement of Internal Flow in Mini Centrifugal Pump

2019 ◽  
Vol 12 (4) ◽  
pp. 251-260
Author(s):  
Toru Shigemitsu ◽  
Yuya Ogawa ◽  
Eito Nakaishi
Keyword(s):  
Centrifugal Pump ◽  
Internal Flow ◽  
Piv Measurement

Investigation of Micro Droplet Formation in a T-Shaped Junction Using Multicolor Confocal Micro PIV

2008 ◽  
Author(s):  
Masamichi Oishi ◽  
Haruyuki Kinoshita ◽  
Marie Oshima ◽  
Teruo Fujii
Keyword(s):  
Multiphase Flow ◽  
Flow Structure ◽  
Dynamical Behavior ◽  
Internal Flow ◽  
Droplet Formation ◽  
Immiscible Fluids ◽  
Present System ◽  
Micro Particle Image Velocimetry ◽  
Micro Piv ◽  
Piv Measurement

This paper aims to investigate a mechanism of microdroplet formation using “multicolor confocal micro particle image velocimetry (PIV)” technique. The present system can measure dynamical behavior of multiphase flow separately and simultaneously. It also enables to identify the interactions between two immiscible fluids. We have applied this system to measure the water droplet formation at a micro T-shaped junction. We have also succeeded in dispersing fluorescent tracer particles into both phases. The interaction between the internal flow of to-be-dispersed water phase and of continuous oil phase is measured as a liquid-liquid multiphase flow. As a result of PIV measurement and interfacial geometry scanning, the relationship between flow structure of each fluid and interfacial geometry is clarified. It indicates that the gap between the tip of discontinuous flow and capillary wall, and interface area play an important role in the flow structure and shear stress on the interface.

Sign in / Sign up

Export Citation Format

Share Document