PIV Measurement and CFD Analysis for the Shear Flows between Static and Rotating Disks

2002 ◽  
Vol 2002.77 (0) ◽  
pp. _13-47_-_13-48_
Author(s):  
Shigeru MURATA ◽  
Shuichi KIZAWA
Keyword(s):  
Shear Flows ◽  
Cfd Analysis ◽  
Rotating Disks ◽  
Piv Measurement

Effects of Swirl Combination and Mixing Tube Geometry on Combustion Instabilities in a Premixed Combustor

2006 ◽  
Author(s):  
Masamichi Koyama ◽  
Hiroshi Fujiwara ◽  
Laurent Zimmer ◽  
Shigeru Tachibana
Keyword(s):  
Pressure Fluctuations ◽  
Flame Structure ◽  
Operating Conditions ◽  
Cfd Analysis ◽  
Combustion Instabilities ◽  
Mean Velocity ◽  
Piv Measurement ◽  
Pdf Analysis ◽  
Combustor Liner ◽  
Tube Geometry

In this paper, flow fields inside a premixed combustor have been investigated by CFD analysis and PIV measurement in a preheating, non-reacting condition. Four types of premixer are examined. The design of the premixer is determined by the combination of swirlers and mixing tubes. There are two variations of triple-concentric swirlers and three variations of mixing tubes. Comparisons are made among mean velocity distributions derived from CFD and PIV. PDF analysis is performed on the data from PIV to discuss the possibility of the occurrence of flashback. Combustion rig tests have been carried out also on similar condition to see combustion instabilities depending on the choice of premixers and operating conditions. Flame is directly observed from crystal windows placed on the side and downstream of the combustion chamber. A glass rod is installed on the wall of the mixing tube so as to see light emissions inside the tube, i.e. evidence of flashback. Pressure fluctuations at the combustor liner are measured in one position. The spectra of pressure fluctuations are computed to look at the possibility of combustion oscillations. Discussions are made on the relation between the global flame structure and pressure modes. Finally, proper premixer configurations to prevent combustion instabilities are proposed.

Study on Flow Field in Curved Circular Pipe with Guide Vane by PIV Measurement and CFD Analysis

2004 ◽  
Vol 2004.53 (0) ◽  
pp. 277-278
Author(s):  
Shigeyuki Tomimatsu ◽  
Yayoi Yonayama ◽  
Kazuo Uranishi
Keyword(s):  
Flow Field ◽  
Guide Vane ◽  
Circular Pipe ◽  
Cfd Analysis ◽  
Piv Measurement

PIV measurement and CFD analysis of airflow around building roof with various building installations

2017 ◽  
Vol 16 (3) ◽  
pp. 163-173 ◽  
Author(s):  
Akiko Sugahara ◽  
Hisahi Kotani ◽  
Yoshihisa Momoi ◽  
Toshio Yamanaka ◽  
Kazunobu Sagara ◽  
...  
Keyword(s):  
Cfd Analysis ◽  
Building Roof ◽  
Piv Measurement

Visualization of Diverse Flows between Co-Rotating Disks using PIV Measurement and Numerical Analysis

2017 ◽  
Vol 2017.92 (0) ◽  
pp. M703
Author(s):  
Shouhei Tsugawa ◽  
Ryosuke Uenishi ◽  
Morihiko Uesaka ◽  
Takashi Watanabe ◽  
Hirochika Tanigawa ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Rotating Disks ◽  
Piv Measurement

scholarly journals In vitro PIV measurement and CFD analysis of flow patterns in cerebral aneurysm

2004 ◽  
Vol 24 (Supplement1) ◽  
pp. 149-152
Author(s):  
Koichi NISHINO ◽  
Daisuke KAWAGUCHI ◽  
Hidetaka SATO ◽  
Haruo ISODA ◽  
Takashi KOSUGI
Keyword(s):  
Cerebral Aneurysm ◽  
Flow Patterns ◽  
Cfd Analysis ◽  
Piv Measurement

Prediction of Heat Transfer With Cavity Flow Modeling for Engine Design

2014 ◽  
Author(s):  
Yukie Sasaki ◽  
Koutarou Hisaeda ◽  
Shinsuke Matsuno ◽  
Takahisa Nagao ◽  
Junya Kouwa
Keyword(s):  
Thermal Analysis ◽  
Measurement Data ◽  
Rotating Disk ◽  
Cavity Flow ◽  
Sensitivity Study ◽  
Cfd Analysis ◽  
Analysis Model ◽  
Temperature Prediction ◽  
Flow Network ◽  
Piv Measurement

In this paper, in order to improve temperature prediction, 2D axisymmetric CFD analysis has been implemented to determine the cavity flow network in Finite Difference Method (FDM) thermal analysis model. With this work process, for example, the complex recirculation of cavity flow can be considered in FDM thermal analysis. In the beginning, the rig test of simplified cavity with rotating disk and PIV measurement are carried out to investigate the flow structure in the cavity and to validate CFD analysis. CFD result has matched well with the measurement data of PIV, and it has been found that SST k-ω turbulent model provides the most reliable result by the sensitivity study. The study result also helps to choose the most suitable scheme of discretization and the method of pressure correction. Then, the modeling of the cavity flow network based on CFD analysis result has been applied to the thermal analysis for the aero-engine. Compared with the measured data, the result with this modeling shows that temperature prediction has been well improved.

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