On the accuracy of Landweber and Tikhonov reconstruction techniques in gas-solid fluidized bed applications
As electrical capacitance tomography technique needs a sophisticated reconstruction, the accuracy of two of the most widely used reconstruction techniques (Landweber and Tikhonov) for gas‐fluidized bed applications were assessed. For this purpose, the results of two‐fluid model simulations were used...
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| Veröffentlicht in: | AIChE journal 2015-12, Vol.61 (12), p.4102-4113 |
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| container_title | AIChE journal |
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| creator | Banaei, M. van Sint Annaland, M. Kuipers, J. A. M Deen, N. G. |
| description | As electrical capacitance tomography technique needs a sophisticated reconstruction, the accuracy of two of the most widely used reconstruction techniques (Landweber and Tikhonov) for gas‐fluidized bed applications were assessed. For this purpose, the results of two‐fluid model simulations were used as an input of reconstruction. After finding the optimum reconstruction parameters for the studied system, it is found that both techniques were able to obtain the radial profile and overall value of average volume fraction very well. Conversely, both methods were incapable to determine bubble sizes accurately especially small bubble sizes, unless the Landweber technique with inverted Maxwell concentration model is applied. The probability distribution of the reconstructed results was also smoother in transition between the emulsion and bubble phases compared to the reality. Finally, no significant differences in noise immunity of these two techniques were observed. © 2015 American Institute of Chemical Engineers AIChE J, 61: 4102–4113, 2015 |
| doi_str_mv | 10.1002/aic.14976 |
| format | Article |
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The probability distribution of the reconstructed results was also smoother in transition between the emulsion and bubble phases compared to the reality. 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A. M</creatorcontrib><creatorcontrib>Deen, N. G.</creatorcontrib><title>On the accuracy of Landweber and Tikhonov reconstruction techniques in gas-solid fluidized bed applications</title><title>AIChE journal</title><addtitle>AIChE J</addtitle><description>As electrical capacitance tomography technique needs a sophisticated reconstruction, the accuracy of two of the most widely used reconstruction techniques (Landweber and Tikhonov) for gas‐fluidized bed applications were assessed. For this purpose, the results of two‐fluid model simulations were used as an input of reconstruction. After finding the optimum reconstruction parameters for the studied system, it is found that both techniques were able to obtain the radial profile and overall value of average volume fraction very well. Conversely, both methods were incapable to determine bubble sizes accurately especially small bubble sizes, unless the Landweber technique with inverted Maxwell concentration model is applied. The probability distribution of the reconstructed results was also smoother in transition between the emulsion and bubble phases compared to the reality. Finally, no significant differences in noise immunity of these two techniques were observed. © 2015 American Institute of Chemical Engineers AIChE J, 61: 4102–4113, 2015</description><subject>Accuracy</subject><subject>accuracy analysis</subject><subject>Bubbles</subject><subject>Chemical engineers</subject><subject>electrical capacitance tomography</subject><subject>Emulsions</subject><subject>Fluid dynamics</subject><subject>Fluidized bed boilers</subject><subject>Fluidized beds</subject><subject>gas-solid fluidized bed</subject><subject>Gases</subject><subject>Landweber and Tikhonov reconstruction</subject><subject>Optimization</subject><subject>Phase transitions</subject><subject>Phases</subject><subject>Reconstruction</subject><subject>Simulation</subject><subject>Tomography</subject><subject>two-fluid model</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp1kE1P3DAQhq2qSN1CD_0HlnppDwFPnNjZI1rKh7SCA1t6tJzJhDUb4sVOCsuvx8vSHipxsOyxnmf06mXsK4hDECI_sg4PoZhq9YFNoCx0Vk5F-ZFNhBCQpQ_4xD7HeJemXFf5hK2uej4siVvEMVjccN_yue2bR6op8PTgC7da-t7_4YHQ93EIIw7OJ4tw2buHkSJ3Pb-1MYu-cw1vu9E17pkaXqdj1-vOod0a8YDttbaL9OXt3me_Tn8uZufZ_OrsYnY8z7AEoTJVVwVZhIZyJbDAop1aJWwhwQJoJYBUU9dFLaAipTVCLdpWVlhWqrWyQLnPvu_2roPf5hvMvYtIXWd78mM0oLWQpZQCEvrtP_TOj6FP6RIloRK5zLfUjx2FwccYqDXr4O5t2BgQZlu7SbWb19oTe7RjH11Hm_dBc3wx-2tkO8PFgZ7-GTasjNJSl-b35ZnR59X1zY1cmBP5Ao2Hk50</recordid><startdate>201512</startdate><enddate>201512</enddate><creator>Banaei, M.</creator><creator>van Sint Annaland, M.</creator><creator>Kuipers, J. 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G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the accuracy of Landweber and Tikhonov reconstruction techniques in gas-solid fluidized bed applications</atitle><jtitle>AIChE journal</jtitle><addtitle>AIChE J</addtitle><date>2015-12</date><risdate>2015</risdate><volume>61</volume><issue>12</issue><spage>4102</spage><epage>4113</epage><pages>4102-4113</pages><issn>0001-1541</issn><eissn>1547-5905</eissn><coden>AICEAC</coden><abstract>As electrical capacitance tomography technique needs a sophisticated reconstruction, the accuracy of two of the most widely used reconstruction techniques (Landweber and Tikhonov) for gas‐fluidized bed applications were assessed. For this purpose, the results of two‐fluid model simulations were used as an input of reconstruction. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Accuracy accuracy analysis Bubbles Chemical engineers electrical capacitance tomography Emulsions Fluid dynamics Fluidized bed boilers Fluidized beds gas-solid fluidized bed Gases Landweber and Tikhonov reconstruction Optimization Phase transitions Phases Reconstruction Simulation Tomography two-fluid model |
| title | On the accuracy of Landweber and Tikhonov reconstruction techniques in gas-solid fluidized bed applications |
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