We validate a multi-scale turbulence model for the thermal energy estimation in coarse-grid simulations of moderately dense gas-particle flows. The is based on spatially-averaging Two-Fluid Model balance equations including equation both phases. found, that drift temperature valid measure heat transfer reduction due to heterogeneous particle clusters. Furthermore, we propose dynamic through app...

The Spatially-Averaged Two-Fluid Model (SA-TFM) is a functional multiphase turbulence model aimed at predicting the influence of unresolved meso-scale structures on macro-scale flow properties in coarse-grid simulations gas-particle flows. In this study, we highlight general applicability SA-TFM due to dynamic estimation coefficients through test-filters, anisotropic treatment Reynolds-stresses...

Aims: A metabolic shift from oxidative phosphorylation to glycolysis confers resistance to apoptosis in pulmonary artery smooth muscle cells (PASMCs) in pulmonary hypertension (PH). Its reversal may promote a pro-apoptotic phenotype and reverse pulmonary vascular remodeling. We previously showed that metabolic acidosis 142 Adriana Geldart et al in vivo reversed remodeling in experimental PH and...

A fluidized bed of Geldart-A particles is promoted as heat transfer fluid in the tubular solar receivers towers. pressure-driven upward particle flow affects hydrodynamic structure and properties bed. Experiments involved a tube 0.05 m internal diameter but very high height/diameter ratio (>120), representative future receiver numerous chemical reactors. Solid circulation fluxes aeration veloci...

A cold-flow lab-scale cross-flow fluidized bed classifier was simulated using the CFD software Barracuda VR®. The purpose of study to identify most suitable drag model and make adjustments that provide best representation flow situation in when comparing results with experimental data. Two particle types were used simulations experiments: zirconia (median diameter 69 µm, skeletal density 3830 k...

Measurements were carried out to investigate the wall-to-bed heat transfer in a cross-flow bubbling fluidized bed under continuous solids exchange. The experiments performed with different tube bundle exchangers immersed lab-scale gas–solid cold flow model 0.4 m × 0.2 cross section. Geldart group B particles used, and gas velocity, circulation rate, exchanger geometry varied. Tracer that previo...