Eyler Lombardo 1980a - Revision history

Scipediacontent at 16:20, 25 January 2021

2021-01-25T16:20:27Z

Scipediacontent at 10:28, 22 January 2021

2021-01-22T10:28:55Z

Scipediacontent: Scipediacontent moved page Draft Content 471466026 to Eyler Lombardo 1980a

2020-10-26T08:53:18Z

Scipediacontent moved page Draft Content 471466026 to Eyler Lombardo 1980a

Scipediacontent: Created page with " == Abstract == The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline tra..."

2020-10-26T08:53:15Z

Created page with " == Abstract == The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline tra..."

New page

== Abstract ==

The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline transport of coal. This study addresses large particle transport plugging phenomena that may be encountered in run-of-mine operations. The project is being conducted in four tasks: review and analysis of current capabilities and available data, analytical modeling, experimental investigations, and unplugging and static start-up. This report documents work completed in FY-1979 as well as work currently in progress. A review of currently available prediction methods was completed. Applicability of the methods to large particle hydrotransport and the prediction of plugging was evaluated. It was determined that available models were inadequate, either because they are empirical and tuned to a given solid or because they are simplified analytical models incapable of accounting for a wide range of parameters. Complicated regression curve fit models lacking a physical basis cannot be extrapolated with confidence. Several specific conclusions were reached: Recent developments in mechanistic modeling, describing flow conditions at the limit of stationary deposition, provide the best basis for prediction and extrapolation of large particle flow. Certain modeled phenomena require further analytical and experimental investigation to improve confidence levels. Experimental work needsmoreÂ Â» to be performed to support modeling and to provide an adequate data base for comparison purposes. No available model permits treatment of solids mixtures such as coal and rock.Â«Â le

Document type: Report

== Full document ==
<pdf>Media:Draft_Content_471466026-beopen70-2254-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.2172/5650814 http://dx.doi.org/10.2172/5650814]

* [https://digital.library.unt.edu/ark:/67531/metadc1090282/m2/1/high_res_d/5650814.pdf https://digital.library.unt.edu/ark:/67531/metadc1090282/m2/1/high_res_d/5650814.pdf]

* [https://www.osti.gov/servlets/purl/5650814 https://www.osti.gov/servlets/purl/5650814],[https://academic.microsoft.com/#/detail/15291462 https://academic.microsoft.com/#/detail/15291462]

← Older revision		Revision as of 16:20, 25 January 2021
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	== Abstract ==		== Abstract ==

−	The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline transport of coal. This study addresses large particle transport plugging phenomena that may be encountered in run-of-mine operations. The project is being conducted in four tasks: review and analysis of current capabilities and available data, analytical modeling, experimental investigations, and unplugging and static start-up. This report documents work completed in FY-1979 as well as work currently in progress. A review of currently available prediction methods was completed. Applicability of the methods to large particle hydrotransport and the prediction of plugging was evaluated. It was determined that available models were inadequate, either because they are empirical and tuned to a given solid or because they are simplified analytical models incapable of accounting for a wide range of parameters. Complicated regression curve fit models lacking a physical basis cannot be extrapolated with confidence. Several specific conclusions were reached: Recent developments in mechanistic modeling, describing flow conditions at the limit of stationary deposition, provide the best basis for prediction and extrapolation of large particle flow. Certain modeled phenomena require further analytical and experimental investigation to improve confidence levels. Experimental work ~~needsmoreÂ Â»~~ to be performed to support modeling and to provide an adequate data base for comparison purposes. No available model permits treatment of solids mixtures such as coal and rock.~~Â«Â le~~	+	The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline transport of coal. This study addresses large particle transport plugging phenomena that may be encountered in run-of-mine operations. The project is being conducted in four tasks: review and analysis of current capabilities and available data, analytical modeling, experimental investigations, and unplugging and static start-up. This report documents work completed in FY-1979 as well as work currently in progress. A review of currently available prediction methods was completed. Applicability of the methods to large particle hydrotransport and the prediction of plugging was evaluated. It was determined that available models were inadequate, either because they are empirical and tuned to a given solid or because they are simplified analytical models incapable of accounting for a wide range of parameters. Complicated regression curve fit models lacking a physical basis cannot be extrapolated with confidence. Several specific conclusions were reached: Recent developments in mechanistic modeling, describing flow conditions at the limit of stationary deposition, provide the best basis for prediction and extrapolation of large particle flow. Certain modeled phenomena require further analytical and experimental investigation to improve confidence levels. Experimental work needsmore » to be performed to support modeling and to provide an adequate data base for comparison purposes. No available model permits treatment of solids mixtures such as coal and rock.« le

@@ Line 3: / Line 3: @@
 The objective of the Hydrotransport Plugging Study is to investigate phenomena associated with predicting the onset and occurrence of plugging in pipeline transport of coal. This study addresses large particle transport plugging phenomena that may be encountered in run-of-mine operations. The project is being conducted in four tasks: review and analysis of current capabilities and available data, analytical modeling, experimental investigations, and unplugging and static start-up. This report documents work completed in FY-1979 as well as work currently in progress. A review of currently available prediction methods was completed. Applicability of the methods to large particle hydrotransport and the prediction of plugging was evaluated. It was determined that available models were inadequate, either because they are empirical and tuned to a given solid or because they are simplified analytical models incapable of accounting for a wide range of parameters. Complicated regression curve fit models lacking a physical basis cannot be extrapolated with confidence. Several specific conclusions were reached: Recent developments in mechanistic modeling, describing flow conditions at the limit of stationary deposition, provide the best basis for prediction and extrapolation of large particle flow. Certain modeled phenomena require further analytical and experimental investigation to improve confidence levels. Experimental work needsmoreÂ Â» to be performed to support modeling and to provide an adequate data base for comparison purposes. No available model permits treatment of solids mixtures such as coal and rock.Â«Â le
@@ Line 18: / Line 13: @@
 * [https://digital.library.unt.edu/ark:/67531/metadc1090282/m2/1/high_res_d/5650814.pdf https://digital.library.unt.edu/ark:/67531/metadc1090282/m2/1/high_res_d/5650814.pdf]
-* [https://www.osti.gov/servlets/purl/5650814 https://www.osti.gov/servlets/purl/5650814],[https://academic.microsoft.com/#/detail/15291462 https://academic.microsoft.com/#/detail/15291462]
+* [https://www.osti.gov/servlets/purl/5650814 https://www.osti.gov/servlets/purl/5650814],

← Older revision	Revision as of 08:53, 26 October 2020
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