Implementation of a borescopic technique in a conical spouted bed for tracking spherical and irregular particles

Effect of operating conditions on the hydrodynamics in fountain confined conical spouted beds

“…PIV technique is a very useful measurement method due its simplicity, but half-column contactors must been used. Therefore, an intrusive PTV technique was proposed by our research group in a previous study, in which it was demonstrated that it is a suitable measuring technique due to the high accuracy of the results (an error lower than 10%) [26] and flexibility of the set-up.…”

Effect of Flow Distributor Configuration on the Hydrodynamics in a Multipurpose Flow Electrochemical Reactor: Numerical Analysis and Experimental Characterization Employing Digital Image Treatment

“…It is worth mentioning that the developed method was implemented in Python 3.6 programming language, executed on a personal computer with Linux Ubuntu operating system and AMD Ryzen 7 1700 and 8 GB of RAM. The computational processing time per 1000 frames is 120 s. To give a perspective of the importance of computational performance in digital image treatment, other similar state-of-the-art deep learning-based methods such as PIV-DCNN, LiteFlowNet-en, PIV-RAFT, and LightPIVNet take 698, 42, 26, and 36 s to process 1000 frames, respectively.…”

“…The Farneback dense optical flow estimation method 23 is used to estimate the local relative velocity which is a dimensionless quantity. The parameters used were a window size of five with four levels and three iterations.…”

Pyrolysis of plastic wastes in a fountain confined conical spouted bed reactor: Determination of stable operating conditions

“…The gas flow rate to attain a u/u ms of 4 is considerable lower than in the base case (7 L min -1 instead of 10 L min -1 ) due to the lower particle size and density of the FCC catalyst. It is noteworthy that draft tubes ease the handling of solids with different sizes and densities without stability problems [71].…”