The final chapter covers experimental methods for unsteady flow applications, including image-based experimental methods, unsteady airfoil experiments, quantitative analysis of animal-generated flow patters using digital particle image velocimetry
, and measurement using temperature and pressure sensitive coatings.
I used Particle Image Velocimetry
(PIV) to study air movement and 20 thermocouples, strategically placed inside the model, to measure temperature distribution.
In addition to holography their lasers are used for spectroscopy, particle image velocimetry
and interferometry, in applications as diverse as nuclear fusion research and engine design.
She and her colleagues conducted a retrospective examination of 92 pregnancies where fetuses were judged to be at risk for heart failure on the basis of echocardiography and Doppler velocimetry
. Of those fetuses, 53 (57%) survived and 39 (43%) did not.
The system can calculate number and size distributions based on statistics, coupled with the technique of Spatial Filter Velocimetry
. It requires no calibration, produces volumetric size and linear number distributions, provides constant measurement and does not assume particles to be spherical.
We investigated 58 women with consecutive singleton physiological pregnancies (30 at term and 28 preterm), with normal flow velocimetry
waveforms in the uteroplacental vessels, whose delivery was between 27 and 42 weeks of gestation.
Obstetric ultrasound showed single live intrauterine foetus corresponding to 28 weeks gestational age with AFI of 7 cm; estimated foetal weight of 1.69 kg, normal foetal Doppler velocimetry
. Patient had elevated blood pressure and started on antihypertensive, Labetalol.
A strong correlation is noted between fetal pulse oximetry Doppler velocimetry
of the MCA and UA and fetal morbidity.
Since 1997, the French-speaking Association of Laser Velocimetry
has offered autumn schools on using lasers to measure the speed of fluids, and nine of the lectures have been elaborated for this volume.