Angle-resolved stereo-PIV measurements close to a down-pumping pitched-blade turbine

The physical characterisation of a microscale parallel bioreactor platform with an industrial CHO cell line expressing an IgG4

“…On the other hand, the volume integral of the dissipation rates yields a power number that is only 55% of the experimentally measured value. However, that is consistent with reported under-predictions based on the k- approach [24] which are usually attributed to the strong streamline curvature found in stirred vessel flows, along with the strong anisotropy of the turbulence close to the impeller blades [30].…”

Mixing studies in a model aerated bioreactor equipped with an up- or a down-pumping ‘Elephant Ear’ agitator: Power, hold-up and aerated flow field measurements

“…A wealth of references exist in this area (e.g. Sheng et al, 1998;Bugay et al, 2002;Khan et al, 2006). Application of the PIV technique to gas-liquid systems is complicated due to reflections from the surfaces of the gas bubbles in the flow and hence published work in this area is relatively scarce.…”

Stereo‐PIV experiments and large eddy simulations of flow fields in stirred tanks with Rushton and curved‐Blade turbines

“…However, because the velocity perpendicular to the measurement plane cannot be obtained directly, a pseudo-isotropic assumption is often utilized to calculate the turbulent kinetic energy (TKE). 16 Escudie and Line measured the three velocity components, their corresponding gradients, and TKE based on two-dimensional PIV experiments carried out in multiple radial, tangential, and horizontal measurement planes. 13 Another method to calculate TKE accurately is based on stereoscopic PIV (SPIV) measurements, but such experiments are complex, time-consuming, and expensive.…”