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Détail de l'auteur
Auteur Robert L. Shambaugh
Documents disponibles écrits par cet auteur
Affiner la rechercheNext - generation modeling of melt blowing / Brent R. Shambaugh in Industrial & engineering chemistry research, Vol. 50 N° 21 (Novembre 2011)
in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12233-12245
Titre : Next - generation modeling of melt blowing Type de document : texte imprimé Auteurs : Brent R. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur ; Robert L. Shambaugh, Auteur Année de publication : 2011 Article en page(s) : pp. 12233-12245 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Modeling Résumé : An advanced model has been developed for predicting the behavior of a fiber as it is formed in the melt blowing process. The model involves the simultaneous solution of the momentum, energy, and continuity equations. Crystallization effects are included. The model equations are solved numerically. As a bottom boundary condition in this solution, a "stop point" is assumed. The stop point is the point where (a) the fiber stress is zero, and (b) the air velocity and fiber velocity are equal. Predicted parameters include fiber diameter, velocity, temperature, stress, and crystallinity. The predicted results show that very little online crystallization takes place under typical melt blowing conditions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697542 [article] Next - generation modeling of melt blowing [texte imprimé] / Brent R. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur ; Robert L. Shambaugh, Auteur . - 2011 . - pp. 12233-12245.
Chimie industrielle
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 50 N° 21 (Novembre 2011) . - pp. 12233-12245
Mots-clés : Modeling Résumé : An advanced model has been developed for predicting the behavior of a fiber as it is formed in the melt blowing process. The model involves the simultaneous solution of the momentum, energy, and continuity equations. Crystallization effects are included. The model equations are solved numerically. As a bottom boundary condition in this solution, a "stop point" is assumed. The stop point is the point where (a) the fiber stress is zero, and (b) the air velocity and fiber velocity are equal. Predicted parameters include fiber diameter, velocity, temperature, stress, and crystallinity. The predicted results show that very little online crystallization takes place under typical melt blowing conditions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24697542
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Titre : Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes Type de document : texte imprimé Auteurs : Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur Année de publication : 2010 Article en page(s) : pp. 8736–8744 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n [article] Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes [texte imprimé] / Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur . - 2010 . - pp. 8736–8744.
Chemical engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Titre : Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes Type de document : texte imprimé Auteurs : Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur Année de publication : 2010 Article en page(s) : pp. 8736–8744 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n [article] Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes [texte imprimé] / Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur . - 2010 . - pp. 8736–8744.
Chemical engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Titre : Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes Type de document : texte imprimé Auteurs : Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur Année de publication : 2010 Article en page(s) : pp. 8736–8744 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n [article] Online measurement of fiber diameter and temperature in the melt-spinning and melt-blowing processes [texte imprimé] / Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur . - 2010 . - pp. 8736–8744.
Chemical engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8736–8744
Mots-clés : Fiber temperature Fiber diameter Melt-spinning processe Melt-blowing processe Résumé : Online measurements of fiber temperature and diameter were made for both the melt-spinning and the melt-blowing processes. The fiber temperature was determined by infrared thermography, and the fiber diameter was determined by high-speed photography. These measurements were then compared with predictions made with mathematical models for melt spinning and melt blowing. There was good agreement between the models and the experimental results, and the agreement was best when heat-transfer correlations developed specifically for fine fibers (cylinders) were used. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900615n
in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 4119–4126
Titre : Unsteady state heat transfer from cylinders to air in normal and parallel flow Type de document : texte imprimé Auteurs : Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur Année de publication : 2009 Article en page(s) : pp. 4119–4126 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Air flow Cylinders Nusselt number Résumé : Transient temperature measurements were made to determine the Nusselt number for both normal and parallel air flow over cylinders. The cylinders were fine polymer fibers, and the temperatures were determined with an infrared camera. The experimental results for normal flow agree with the well-established correlation of McAdams. For parallel flow, the results lie between the predictions of previous researchers. Unlike the work described herein, previous investigators used equilibrium conditions as a basis for determining Nusselt numbers. Our transient measurements showed that the Nusselt number is not strongly dependent on the transient character of temperature difference. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800946a [article] Unsteady state heat transfer from cylinders to air in normal and parallel flow [texte imprimé] / Vishnu T. Marla, Auteur ; Robert L. Shambaugh, Auteur ; Dimitrios V. Papavassiliou, Auteur . - 2009 . - pp. 4119–4126.
Chemical engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 4119–4126
Mots-clés : Air flow Cylinders Nusselt number Résumé : Transient temperature measurements were made to determine the Nusselt number for both normal and parallel air flow over cylinders. The cylinders were fine polymer fibers, and the temperatures were determined with an infrared camera. The experimental results for normal flow agree with the well-established correlation of McAdams. For parallel flow, the results lie between the predictions of previous researchers. Unlike the work described herein, previous investigators used equilibrium conditions as a basis for determining Nusselt numbers. Our transient measurements showed that the Nusselt number is not strongly dependent on the transient character of temperature difference. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800946a
