The potential of human mesenchymal stem cells (hMSCs) for allogeneic cell therapies has created a large amount of interest. However, this presupposes the availability of efficient scale-up procedures. Promising results have been reported for stirred bioreactors that operate with microcarriers. Recent publications focusing on microcarrier-based stirred bioreactors have demonstrated the successfu...

The hot water sprays are an important part of many industrial processes, where the detailed knowledge of physical phenomena involved in jet transportation, interaction, secondary breakup, evaporation, and coalescence of droplets is important to reach more efficient processes. The objective of the work was to study the water spray jet breakup dynamics, vortex cloud formation, and droplet size di...

This work aims to study the characteristics of multi-nozzle spray cooling using CFD method based on the fundamentals of air flow and liquid droplet collision dynamics. A mathematical model for the two-phase flow was presented. The simulations were performed using a EulerianeLagrangian approach. Focus was placed on revealing the flow behavior with multiple nozzles, the droplet trajectory, and th...

We investigate the morphology and size distribution of satellite droplets resulting from interaction a freely falling water droplet with swirling airstream different strengths by employing shadowgraphy deep-learning-based digital in-line holography techniques. found that exhibits vibrational, retracting bag normal breakup phenomena for no swirl, low high swirl same aerodynamic field. In scenari...

Polyoxymethylene dimethyl ether (PODE) is a low-viscosity oxygenated fuel that can improve the volatility of blended fuels. In this work, macroscopic and microscopic spray characteristics diesel-PODE3-4 under different ambient temperatures injection pressures (IP) are studied. The studied blends consisted pure diesel (P0), two blend fuels 20% (P20) 50% (P50) by volume fraction PODE3-4. Mie scat...

This work provides a review of hydrodynamic characteristics and mass transfer in the K?hni extraction columns. The experiments, as reported literature, were performed presence absence transfer. results showed that Sauter mean drop diameter was strongly affected by rotor speed interfacial tension, whereas effects dispersed continuous velocities negligible. Empirical correlations for diameter, ta...

A physics-based, low-order ignition model is used to assess the performance of a kerosene-fueled gas-turbine combustor under high-altitude relight conditions. The in this study based on motion virtual flame particles and their extinction according Karlovitz number criterion, stochastic procedure account for effects spray polydispersity flame’s behavior. large droplets arising from poor fuel ato...

Abstract In steam turbine flow, the complex droplet spectrum caused by nonequilibrium condensation is necessary to be modeled accurately predict behavior and estimate exergy destruction erosion rate. This study built validated a polydispersed model with Quadrature method of moments (QMOM), consisting transition SST model, entropy generation. A spline-based algorithm was used reconstruct shape p...

This study numerically investigated the atomization characteristics of misaligned impinging jets, with misalignment ratio ê ranging between 0 and 0.2, by employing volume fluid method an adaptive mesh refinement algorithm. The results show that droplet Sauter mean diameter varies non-monotonically reaches minimum value, which implies best performance, at ê=0.1 under operating conditions concern...