Abstract
An experimental investigation on the disturbing influence of the solutal Marangoni convection during diffusion measurements is presented. We used the systems Sn-Bi, Pb-Ag and Sn-In with decreasing differences in surface tension. For all systems we measured surface tension and - under varying free surface conditions - diffusion coefficients. We succeeded in measuring diffusion coefficients on the ground under nearly non-free surface conditions. The results are compared with the results of the FOTON M2-satellite mission with similar μg-experiments. We show that temperatures from around 400 °C to about 800 °C and the degree of free surfaces influences strongly the measured value for the diffusion coefficient.
| Original language | English |
|---|---|
| Pages (from-to) | 6042-6049 |
| Number of pages | 8 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 52 |
| Issue number | 25-26 |
| DOIs | |
| Publication status | Published - 2009 Dec |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
- Condensed Matter Physics
- Fluid Flow and Transfer Processes
Cite this
Diffusion measurements using the shear cell technique : Investigation of the role of Marangoni convection by pre-flight experiments on the ground and during the Foton M2 mission. / Roşu-Pflumm, Raluca; Wendl, Wolfgang; Müller-Vogt, German; Suzuki, Shinsuke; Kraatz, K. H.; Frohberg, G.
In: International Journal of Heat and Mass Transfer, Vol. 52, No. 25-26, 12.2009, p. 6042-6049.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Diffusion measurements using the shear cell technique
T2 - Investigation of the role of Marangoni convection by pre-flight experiments on the ground and during the Foton M2 mission
AU - Roşu-Pflumm, Raluca
AU - Wendl, Wolfgang
AU - Müller-Vogt, German
AU - Suzuki, Shinsuke
AU - Kraatz, K. H.
AU - Frohberg, G.
PY - 2009/12
Y1 - 2009/12
N2 - An experimental investigation on the disturbing influence of the solutal Marangoni convection during diffusion measurements is presented. We used the systems Sn-Bi, Pb-Ag and Sn-In with decreasing differences in surface tension. For all systems we measured surface tension and - under varying free surface conditions - diffusion coefficients. We succeeded in measuring diffusion coefficients on the ground under nearly non-free surface conditions. The results are compared with the results of the FOTON M2-satellite mission with similar μg-experiments. We show that temperatures from around 400 °C to about 800 °C and the degree of free surfaces influences strongly the measured value for the diffusion coefficient.
AB - An experimental investigation on the disturbing influence of the solutal Marangoni convection during diffusion measurements is presented. We used the systems Sn-Bi, Pb-Ag and Sn-In with decreasing differences in surface tension. For all systems we measured surface tension and - under varying free surface conditions - diffusion coefficients. We succeeded in measuring diffusion coefficients on the ground under nearly non-free surface conditions. The results are compared with the results of the FOTON M2-satellite mission with similar μg-experiments. We show that temperatures from around 400 °C to about 800 °C and the degree of free surfaces influences strongly the measured value for the diffusion coefficient.
UR - http://www.scopus.com/inward/record.url?scp=78751663554&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78751663554&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2009.06.001
DO - 10.1016/j.ijheatmasstransfer.2009.06.001
M3 - Article
AN - SCOPUS:78751663554
VL - 52
SP - 6042
EP - 6049
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
IS - 25-26
ER -