Search Results - "Cocco, Ray A"

Evaluation of correlations for minimum fluidization velocity (Umf) in gas-solid fluidization by Anantharaman, Aditya, Cocco, Ray A., Chew, Jia Wei

“…The minimum fluidization velocity (Umf), defined as the superficial gas velocity at which the drag force of the upward moving gas becomes equal to the weight…”
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Review of cluster characteristics in circulating fluidized bed (CFB) risers by Cahyadi, Andy, Anantharaman, Aditya, Yang, Shiliang, Karri, S.B. Reddy, Findlay, John G., Cocco, Ray A., Chew, Jia Wei

“…Particle clusters are well acknowledged to affect the hydrodynamics and overall performance of gas-solid fluidized beds. Since one of the first reports on the…”
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Review of entrainment correlations in gas–solid fluidization by Chew, Jia Wei, Cahyadi, Andy, Hrenya, Christine M., Karri, Reddy, Cocco, Ray A.

“…•Review of applicability of entrainment correlations to Geldart Groups A and B.•Monodisperse, binary, and continuous particle size distributions (PSDs)…”
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Fast versus turbulent fluidization of Geldart Group B particles by Chew, Jia Wei, Cocco, Ray A.

“…Both fast and turbulent fluidized beds exhibit entrainment, but the differences in the flow phenomena are not well understood. This study targeted a…”
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DEM Study on the effect of particle‐size distribution on jamming in a 3D conical hopper by Zhao, Ya, Cocco, Ray A., Yang, Shiliang, Chew, Jia Wei

“…Despite the advancement on the understanding on the unwelcome phenomenon of hopper jamming, the influence of the particle‐size distribution (PSD) width of the…”
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Solids flux profiles of Geldart Group A particles in high‐velocity circulating fluidized bed risers by Issangya, Allan S., Karri, S. B. Reddy, Cocco, Ray A., Knowlton, Ted, Chew, Jia Wei

“…Circulating fluidized bed (CFB) risers using Group A particles have traditionally, mostly, been considered to operate in the fast fluidization regime, which…”
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Comparative study of Transport Disengaging Height (TDH) correlations in gas–solid fluidization by Cahyadi, Andy, Neumayer, Anthony H., Hrenya, Christine M., Cocco, Ray A., Chew, Jia Wei

“…Transport Disengaging Height (TDH), defined as the freeboard height whereby the entrainment rate does not change appreciably [1–6], is an important parameter…”
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Investigation of particle velocity in FCC gas-fluidized beds based on different measurement techniques by Tebianian, Sina, Dubrawski, Kristian, Ellis, Naoko, Cocco, Ray A., Hays, Roy, Reddy Karri, S.B., Leadbeater, Thomas W., Parker, David J., Chaouki, Jamal, Jafari, Rouzbeh, Garcia-Trinanes, Pablo, Seville, Jonathan P.K., Grace, John R.

“…The novel traveling fluidization column, designed and built to assure identical operating conditions, was deployed to compare alternate experimental…”
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Cluster characteristics of Geldart Group B particles in a pilot-scale CFB riser. I. Monodisperse systems by Chew, Jia Wei, Hays, Roy, Findlay, John G., Knowlton, Ted M., Reddy Karri, S.B., Cocco, Ray A., Hrenya, Christine M.

“…Experiments in a circulating fluidized bed (CFB) riser with Geldart Group B particles have been carried out with an emphasis on cluster characterization. In…”
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Interpreting Differential Pressure Signals for Particle Properties and Operating Conditions in a Pilot-Scale Circulating Fluidized Bed Riser by Anantharaman, Aditya, Karri, S. B. Reddy, Findlay, John G, Hrenya, Christine M, Cocco, Ray A, Chew, Jia Wei

“…Pressure taps are ubiquitous in fluidized bed reactors. Unfortunately, attention is typically paid only to the mean or standard deviation of the fluctuations…”
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Cluster characteristics of Geldart group B particles in a pilot-scale CFB riser. II. Polydisperse systems by Chew, Jia Wei, Hays, Roy, Findlay, John G., Knowlton, Ted M., Karri, S.B. Reddy, Cocco, Ray A., Hrenya, Christine M.

“…Experiments with a focus on the impact of polydispersity on clustering characteristics (namely, appearance probability, duration, and frequency) of Geldart…”
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Intrusive probes in riser applications by Cocco, Ray A., Karri, S.B. Reddy, Knowlton, Ted M., Findlay, John, Gauthier, Thierry, Chew, Jia Wei, Hrenya, Christine M.

“…Many of the probes used to understand hydrodynamics in circulating fluidized bed risers intrude into the environment they are measuring, although assumptions…”
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Annulus flow behavior of Geldart Group B particles in a pilot-scale CFB riser by Anantharaman, Aditya, Issangya, Allan, Karri, S.B. Reddy, Findlay, John, Hrenya, Christine M., Cocco, Ray A., Chew, Jia Wei

“…Solids flow direction near the wall of a CFB riser was studied for three monodisperse, two binary mixtures and one continuous particle size distribution (PSD)…”
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Cluster characteristics of continuous size distributions and binary mixtures of Group B particles in dilute riser flow by Chew, Jia Wei, Parker, Drew M., Cocco, Ray A., Hrenya, Christine M.

“…► Experimental cluster behavior of continuous PSDs and binary mixtures in CFB riser. ► Cluster appearance probability unaffected by local riser position or…”
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Solids flux measurements via alternate techniques in a gas-fluidized bed by Tebianian, Sina, Dubrawski, Kristian, Ellis, Naoko, Cocco, Ray A., Hays, Roy, Karri, S.B. Reddy, Leadbeater, Thomas W., Parker, David J., Chaouki, Jamal, Jafari, Rouzbeh, Garcia-Trinanes, Pablo, Seville, Jonathan P.K., Grace, John R.

“…•A travelling fluidized bed ensured identical operating conditions at several sites.•Solids flux was obtained by novel analyses of invasive and non-invasive…”
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Species segregation of binary mixtures and a continuous size distribution of Group B particles in riser flow by Chew, Jia Wei, Hays, Roy, Findlay, John G., Karri, S.B. Reddy, Knowlton, Ted M., Cocco, Ray A., Hrenya, Christine M.

“…Experiments involving a gas–solid, pilot-scale circulating fluidized bed (CFB) have been carried out, with a focus on species segregation measurements in a…”
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Reverse core-annular flow of Geldart Group B particles in risers by Chew, Jia Wei, Hays, Roy, Findlay, John G., Knowlton, Ted M., Karri, S.B. Reddy, Cocco, Ray A., Hrenya, Christine M.

“…Experiments involving monodisperse Geldart Group B particles have been carried out in a pilot-scale riser of a circulating fluidized bed (CFB). Several…”
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Impact of material property and operating conditions on mass flux profiles of monodisperse and polydisperse Group B particles in a CFB riser by Chew, Jia Wei, Hays, Roy, Findlay, John G., Knowlton, Ted M., Karri, S.B. Reddy, Cocco, Ray A., Hrenya, Christine M.

“…Experiments directed at understanding local mass flux behavior of Geldart Group B materials in the riser of a gas-solids circulating fluidized bed (CFB) have…”
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Application of machine learning methods to understand and predict circulating fluidized bed riser flow characteristics by Chew, Jia Wei, Cocco, Ray A.

“…•Used machine learning methods to understand and predict fluidization phenomena.•Random Forest revealed relative dominance of process variables in CFB…”
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100 years of scaling up fluidized bed and circulating fluidized bed reactors by Chew, Jia Wei, LaMarche, W. Casey Q., Cocco, Ray A.

“…This year, 2022, we celebrate the 100-year anniversary of the commercialization of the fluidized bed reactor. In those years, many new processes have been…”
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