TY - JOUR
T1 - Use of particle imaging velocimetry to measure liquid velocity profiles in liquid and liquid/gas flows through spacer filled channels
AU - Willems, P.
AU - Deen, N.G.
AU - Kemperman, A.J.B.
AU - Lammertink, R.G.H.
AU - Wessling, Matthias
AU - Sint Annaland, van, M.
AU - Kuipers, J.A.M.
AU - Meer, van der, W.G.J.
PY - 2010
Y1 - 2010
N2 - Liquid and liquid/gas flows through spacer filled channels were studied using Particle Imaging Velocimetry (PIV) to provide experimental support for velocity distributions obtained from Computational Fluid Dynamics studies available in the literature. It is shown that PIV is a suitable technique for measuring velocity profiles in spacer filled channels, although care has to be taken when interpreting the results. PIV measurements were carried out for an entire flow cell (5. cm × 15. cm), a smaller area of roughly 7. mm × 8. mm and for a single spacer cell (2.5. mm × 3. mm). The experimental results show that fluid flow is well distributed across the entire flow cell in the case of single-phase flow. The recordings of the single spacer cell showed that liquid flow is mainly parallel to the spacer filaments and therefore the direction of flow changes 90° over the height of the channel. Introduction of air bubbles introduced strong local velocity gradients. The liquid velocity in two-phase flows is shown to be more unsteady than in the case of single-phase flow, which is advantageous when trying to prevent fouling or concentration polarization. © 2010 Elsevier B.V.
AB - Liquid and liquid/gas flows through spacer filled channels were studied using Particle Imaging Velocimetry (PIV) to provide experimental support for velocity distributions obtained from Computational Fluid Dynamics studies available in the literature. It is shown that PIV is a suitable technique for measuring velocity profiles in spacer filled channels, although care has to be taken when interpreting the results. PIV measurements were carried out for an entire flow cell (5. cm × 15. cm), a smaller area of roughly 7. mm × 8. mm and for a single spacer cell (2.5. mm × 3. mm). The experimental results show that fluid flow is well distributed across the entire flow cell in the case of single-phase flow. The recordings of the single spacer cell showed that liquid flow is mainly parallel to the spacer filaments and therefore the direction of flow changes 90° over the height of the channel. Introduction of air bubbles introduced strong local velocity gradients. The liquid velocity in two-phase flows is shown to be more unsteady than in the case of single-phase flow, which is advantageous when trying to prevent fouling or concentration polarization. © 2010 Elsevier B.V.
U2 - 10.1016/j.memsci.2010.06.029
DO - 10.1016/j.memsci.2010.06.029
M3 - Article
SN - 0376-7388
VL - 362
SP - 143
EP - 153
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1-2
ER -