@article{(Open Science Index):https://publications.waset.org/pdf/10003828,
	  title     = {Identification of the Main Transition Velocities in a Bubble Column Based on a Modified Shannon Entropy},
	  author    = {Stoyan Nedeltchev and  Markus Schubert},
	  country	= {},
	  institution	= {},
	  abstract     = {The gas holdup fluctuations in a bubble column (0.15 m in ID) have been recorded by means of a conductivity wire-mesh sensor in order to extract information about the main transition velocities. These parameters are very important for bubble column design, operation and scale-up. For this purpose, the classical definition of the Shannon entropy was modified and used to identify both the onset (at UG=0.034 m/s) of the transition flow regime and the beginning (at UG=0.089 m/s) of the churn-turbulent flow regime. The results were compared with the Kolmogorov entropy (KE) results. A slight discrepancy was found, namely the transition velocities identified by means of the KE were shifted to somewhat higher (0.045 and 0.101 m/s) superficial gas velocities UG.},
	    journal   = {International Journal of Chemical and Molecular Engineering},
	  volume    = {10},
	  number    = {2},
	  year      = {2016},
	  pages     = {241 - 244},
	  ee        = {https://publications.waset.org/pdf/10003828},
	  url   	= {https://publications.waset.org/vol/110},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 110, 2016},
	}