an experimental and numerical analysis of flow in a shockwave power generator ™
DESCRIPTION
An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™. Nicholas Doherty Dr. T. J. Scanlon Dr. M. T. Stickland University of Strathclyde. Introduction to SPG ™. Invented by James Griggs, patented 1993 Attempts to harness the energy release from cavitation - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/1.jpg)
An Experimental and Numerical An Experimental and Numerical Analysis of Flow in a ShockWave Analysis of Flow in a ShockWave
Power GeneratorPower Generator™™
Nicholas Doherty
Dr. T. J. Scanlon
Dr. M. T. Stickland
University of Strathclyde
![Page 2: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/2.jpg)
Introduction to SPGIntroduction to SPG™™
Invented by James Griggs, patented 1993
Attempts to harness the energy release from cavitation
Flow mechanism present is not yet understood
![Page 3: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/3.jpg)
Reduced Scale Clear Acrylic Reduced Scale Clear Acrylic ModelModel
Model made entirely of clear acrylic
Large cubic/cylindrical holes to assist visualisation
All other important dimensions remain to scale
![Page 4: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/4.jpg)
Image De-rotationImage De-rotation
Image de-rotation allows a stationary view of a rotating component
De-rotator mirrors rotate at half the speed of the rotating object
Reveal relative flow hidden by dominant primary flow field
![Page 5: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/5.jpg)
Experimental Set-UpExperimental Set-Up
![Page 6: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/6.jpg)
Experimental EquipmentExperimental Equipment
![Page 7: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/7.jpg)
Numerical AnalysisNumerical Analysis
FLUENT 5 CFD software Moving Reference Frame method Standard form of k- model SIMPLE algorithm for pressure-velocity
coupling Second order upwinding for convection
terms for momentum Steady State and Transient solutions solved
![Page 8: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/8.jpg)
PIV ResultsPIV Results
Tests taken at 1,000 rpm
Evidence of vortex formation
Separation from inside wall and area of recirculation
![Page 9: An Experimental and Numerical Analysis of Flow in a ShockWave Power Generator ™](https://reader036.vdocuments.mx/reader036/viewer/2022062322/56814e8f550346895dbc34f2/html5/thumbnails/9.jpg)
CFD ResultsCFD Results
Reasonable correlation with PIV results
Vortex formation in hole
Separation from inside wall and recirculation area