Documents disponibles écrits par cet auteur

Hydrodynamics in a rotating packed bed. I. / Zuo-yi Yan in Industrial & engineering chemistry research, Vol.51 N° 31 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10472-10481 Titre : Hydrodynamics in a rotating packed bed. I. : A novel experimental method Type de document : texte imprimé Auteurs : Zuo-yi Yan, Auteur ; Lin Cheng, Auteur ; Qi Ruan, Auteur Année de publication : 2012 Article en page(s) : pp. 10472-10481 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Packed  bed  Hydrodynamics Résumé : A novel experimental method is proposed to investigate the fluid flow in rotating packed beds (RPB). Experimental results show that the novel method is simple and effective and can be used not only in the lab experimental equipment but also in the industrial grade equipment. By using this method, the hydrodynamic performances of the RPB can be easily studied, which include actual wetting and false wetting, the flow pattern of the liquid film flow, the number and width of liquid trajectories, etc., and consequently, their changing rules are obtained. The results have significant effect on the gas-liquid two phase transfer behavior and are the basis of establishing accurately hydrodynamic mathematical model for RPB. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234078 [article] Hydrodynamics in a rotating packed bed. I. : A novel experimental method [texte imprimé] / Zuo-yi Yan, Auteur ; Lin Cheng, Auteur ; Qi Ruan, Auteur . - 2012 . - pp. 10472-10481. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10472-10481 Mots-clés : Packed  bed  Hydrodynamics Résumé : A novel experimental method is proposed to investigate the fluid flow in rotating packed beds (RPB). Experimental results show that the novel method is simple and effective and can be used not only in the lab experimental equipment but also in the industrial grade equipment. By using this method, the hydrodynamic performances of the RPB can be easily studied, which include actual wetting and false wetting, the flow pattern of the liquid film flow, the number and width of liquid trajectories, etc., and consequently, their changing rules are obtained. The results have significant effect on the gas-liquid two phase transfer behavior and are the basis of establishing accurately hydrodynamic mathematical model for RPB. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234078

Hydrodynamics in a rotating packed bed. II. / Zuo-yi Yan in Industrial & engineering chemistry research, Vol.51 N° 31 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10482-10491 Titre : Hydrodynamics in a rotating packed bed. II. : A mathematical model Type de document : texte imprimé Auteurs : Zuo-yi Yan, Auteur ; Qi Ruan, Auteur ; Lin Cheng, Auteur Année de publication : 2012 Article en page(s) : pp. 10482-10491 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Mathematical  model  Packed  bed  Hydrodynamics Résumé : A mathematical model for air―liquid two-phase flow in rotating packed beds (RPB) is established to describe the real condition of the fluid flow in the RPB. Results show that the model can better and reasonably predict the distribution of the air-liquid two-phase flow field, the pressure drop, the liquid film thickness, the proportion of the turbulent flow in the liquid film and some other complex hydrodynamic characteristics in the RPB. The results provide a theory basis for the gas-liquid two-phase heat transfer and mass transfer. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234079 [article] Hydrodynamics in a rotating packed bed. II. : A mathematical model [texte imprimé] / Zuo-yi Yan, Auteur ; Qi Ruan, Auteur ; Lin Cheng, Auteur . - 2012 . - pp. 10482-10491. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol.51 N° 31 (Août 2012) . - pp. 10482-10491 Mots-clés : Mathematical  model  Packed  bed  Hydrodynamics Résumé : A mathematical model for air―liquid two-phase flow in rotating packed beds (RPB) is established to describe the real condition of the fluid flow in the RPB. Results show that the model can better and reasonably predict the distribution of the air-liquid two-phase flow field, the pressure drop, the liquid film thickness, the proportion of the turbulent flow in the liquid film and some other complex hydrodynamic characteristics in the RPB. The results provide a theory basis for the gas-liquid two-phase heat transfer and mass transfer. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26234079

Multi-objective optimization of heat exchanger design by entropy generation minimization / Jiangfeng Guo in Journal of heat transfer, Vol. 132 N° 8 (Août 2010) 

Public ISBD [article]  in Journal of heat transfer > Vol. 132 N° 8 (Août 2010) . - pp. [081801-1/8] Titre : Multi-objective optimization of heat exchanger design by entropy generation minimization Type de document : texte imprimé Auteurs : Jiangfeng Guo, Auteur ; Lin Cheng, Auteur ; Mingtian Xu, Auteur Article en page(s) : pp. [081801-1/8] Note générale : Physique Langues : Anglais (eng) Mots-clés : Heat  exchanger  Heat  and  mass  transfer  Heat  conduction  Genetic  algorithm  Pareto  optimisation Index. décimale : 536 Chaleur. Thermodynamique Résumé : In the present work, a multi-objective optimization of heat exchanger thermal design in the framework of the entropy generation minimization is presented. The objectives are to minimize the dimensionless entropy generation rates related to the heat conduction under finite temperature difference and fluid friction under finite pressure drop. Constraints are specified by the admissible pressure drop and design standards. The genetic algorithm is employed to search the Pareto optimal set of the multi-objective optimization problem. It is found that the solutions in the Pareto optimal set are trade-off between the pumping power and heat exchanger effectiveness. In some sense, the optimal solution in the Pareto optimal set achieves the largest exchanger effectiveness by consuming the least pumping power under the design requirements and standards. In comparison with the single-objective optimization design, the multi-objective optimization design leads to the significant decrease in the pumping power for achieving the same heat exchanger effectiveness and presents more flexibility in the design process. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Multi-objective optimization of heat exchanger design by entropy generation minimization [texte imprimé] / Jiangfeng Guo, Auteur ; Lin Cheng, Auteur ; Mingtian Xu, Auteur . - pp. [081801-1/8]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 8 (Août 2010) . - pp. [081801-1/8] Mots-clés : Heat  exchanger  Heat  and  mass  transfer  Heat  conduction  Genetic  algorithm  Pareto  optimisation Index. décimale : 536 Chaleur. Thermodynamique Résumé : In the present work, a multi-objective optimization of heat exchanger thermal design in the framework of the entropy generation minimization is presented. The objectives are to minimize the dimensionless entropy generation rates related to the heat conduction under finite temperature difference and fluid friction under finite pressure drop. Constraints are specified by the admissible pressure drop and design standards. The genetic algorithm is employed to search the Pareto optimal set of the multi-objective optimization problem. It is found that the solutions in the Pareto optimal set are trade-off between the pumping power and heat exchanger effectiveness. In some sense, the optimal solution in the Pareto optimal set achieves the largest exchanger effectiveness by consuming the least pumping power under the design requirements and standards. In comparison with the single-objective optimization design, the multi-objective optimization design leads to the significant decrease in the pumping power for achieving the same heat exchanger effectiveness and presents more flexibility in the design process. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]