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Numeriek en experimenteel onderzoek ter verbetering van het dynamisch gedrag van een elektrochemische wandschuifspanning opnemer

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Numeriek en experimenteel onderzoek ter verbetering van het

dynamisch gedrag van een elektrochemische

wandschuifspanning opnemer

Citation for published version (APA):

Willems, P. J. B. (1988). Numeriek en experimenteel onderzoek ter verbetering van het dynamisch gedrag van een elektrochemische wandschuifspanning opnemer. (DCT rapporten; Vol. 1988.037). Technische Universiteit Eindhoven.

Document status and date: Gepubliceerd: 01/01/1988

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(2)

Numeriek en experiraenteel onderzoek t e r

verbetering van het dynamisch gedrag van

een elektrochemische

~ a n d s ~ ~ ~ ~ f s ~ a n n i ~ ~

opnemer

rapport n r :

88.037

stageverslag

Af6eling

B W T ,

variant

inr

Technische

Universiteit Einllhoven

Eindhoven, a p r i l

1988

Begeleiding: dr.

i r .

A.A.

van Steenhoven

s e t

dank aan alle mensen

:Jan

hex BiomediseE?

(3)
(4)

Ptwbteemstett i n g 3. Experimentete restittaten 3;i =

Xnte

i d i ng 3.2. P n i e i d e n d e experimenten 3 3 =

Instat

i ons i Y g e d ~ a g Cctnctusies

en

a a n b e v e t i n g e n 4 13 j l a g e n

(5)

a

(6)

D i t onderzoek i s verricht i n h e t kader v a n het inter-universitaire pi%ojt;i:t 'Athei~ij-~kterose '. S ~ B iiakgt-ijep FundaijjgnteLe [ J e ~ k t u i gb13uw f a fd 5if

en Transportfysica ( a i d tJ> van

d e

Technische Universiteit E i n d h o v e n en di.

vakgroepen f y s i o t o g i e en b i o f y s i c a van d~ i-i jksuniversiteit Limbuty.

I n

d i t p r o j e c t is d e aandacht gericht op d e v w e g t i j d i g e detectie v a n e e n

v r m a u w i n g f-stenose:~ i n d e vertakking van d e hais.z,tagader fcarot is

bifurcatiel j l

Het

stromingsgebruien dichtbij de @and is d a a ~ b i j v a n groot betang, Een karakteristieke gi-aotheid van het s t r a m i n g s v e t d dichtbij d e vancl

i s d e wandschuifspanning.

I n

z i j n a f s t u d e e i w e r k f v d Beucken, 19873 t i r e f t van den Beucken een

aan2e.t gemaakt t o f h e t gebi-gik van rtectro-ihemi.z,the

kiandcchiii fspanntngopnemer

t e r

b e p a l i n g van d e wanbrctrui fspanning.

Es-

~i j n

expeiTiiBenten vet-ri;:ht bepat i n g het dynamisch gedrag van de opnemei. vaut" oz.ci i _ t ~ i = e n d e laminaire Foiseu-i t t e stromingen. Uit het arrderzaek b i r e k

onde.~. a n d e w d a t d e g e b w i k t e etektrlw-chemische opnemei- n i s t g e s c h i k &

i3m, b i j b r d o o r hem beschs-even strominqssituaties, nauwkeiir.ig d e

ti jdsafhanketf j k e wandschuiispanning t e

kunnen

meten.

2 5 % verstaq vormt e e n v o o r t z e t t i n g op het 0ndeit2oeb. v a n t v d Beiactten, 938',73, At- doet is gestetd het tt-achten t e verbetet-en van het dynamisch gedrag van d e opnemer.. Twee b e t . a n g r i j k e aspecten Aiertiij; z i j n d e kahode--

a n o d e afstand e n d e kathode g r o o t k e .

De

o p z e t van het unider.zoek i-;

t u e e t e d i q . t n e r z i j d s v a r d e n ntimerieke experimenten gedaan mrt tsehiiip vsn e e n

E.E,M,

prog~*aiiiiiia waarbij d e kathode-anode afstand r n de k a t h o d e gi-otitte worden gevarieerd ( H o o # d ~ . t u k 2 > = Anderzijds worden m r t behutp

van

een meetopstetiing espet-iimnten uitgevoerd met een n i e u w e opnemer waarbij b r k a t h o d e - a n o d e atstarid s t e ~ 1 . i is. i e ~ k i e i n d <Hoofdstuk

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