Malika.D Kedir-Talha and Mohammed Mehenni
The Estimate Rate of Permanent Flow of a Liquid Simulating Blood by Doppler Effect
1547 - 1553
2008
2
7
International Journal of Electronics and Communication Engineering
https://publications.waset.org/pdf/12703
https://publications.waset.org/vol/19
World Academy of Science, Engineering and Technology
To improve the characterization of blood flows, we propose a method which makes it possible to use the spectral analysis
of the Doppler signals. Our calculation induces a reasonable approximation, the error made on estimated speed reflects the fact
that speed depends on the flow conditions as well as on measurement parameters like the bore and the volume flow rate. The estimate of the Doppler signal frequency enables us to determine the maximum Doppler frequencie Fd max as well as the maximum flow speed. The
results show that the difference between the estimated frequencies
( Fde ) and the Doppler frequencies ( Fd ) is small, this variation tends to zero for important θ angles and it is proportional to the diameter D. The description of the speed of friction and the
coefficient of friction justify the error rate obtained.
Open Science Index 19, 2008