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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Influence of uncertainty in the determination of rheological properties of thickened wastewater sludge on the calculation of the pipeline flow friction loss
 Svitavská, K. ; Havlík, V. ; Hodaň, H. ; Matoušek, Václav
The paper deals with the rheological properties of wastewater sludge and their influence on the determination of energy requirements of pipeline sludge transport. The paper uses a database of rheological parameters consisting of the results of 67 measurements of various wastewater sludge. At the measured values, the uncertainty in the determination of the rheological parameter values for the sludge of a certain concentration is converted to the uncertainty in the calculation of friction losses in the laminar as well as turbulent flow regime. Different approaches and models are used and compared the in the calculation of friction losses. The uncertainty analysis also includes the uncertainty arising from the use of different predictive approaches and/or computational models.\n
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