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Jian-feng Chen - One of the best experts on this subject based on the ideXlab platform.

  • 3d numerical simulation of a rotating packed bed with structured Stainless Steel Wire mesh packing
    Chemical Engineering Science, 2017
    Co-Authors: Moses Arowo, Jian-feng Chen
    Abstract:

    Abstract Computational fluid dynamics (CFD) is a powerful tool used to investigate the hydrodynamics in various chemical devices. As one of the typical process intensification equipment, rotating packed beds (RPBs) have been widely used in various fields. However, it is still a challenge to obtain the detailed information by CFD analysis due to the complex packing structure in the rotor of a RPB. In this study, we firstly built a three dimensional (3D) physical model with the same structure and size as the physical RPB and structured Stainless Steel Wire mesh packing. The realizable k - e model is applied to investigate the gas pressure drop, pressure distribution, and gas flow at different rotational speeds and gas flow rates. Based on the breakdown of the overall gas pressure drop, the gas pressure drop in the inner cavity zone is the major contributor to the overall gas pressure drop under most operation conditions. The 3D physical model describing the actual RPB can give deep understanding of the gas flow in the entire RPB as well as the gas flow behavior around every fiber of the packing. Furthermore, one special phenomenon of strong turbulence, named as gas-side end effect, was revealed in the outer annular packing zone in the rotor.

  • investigation of effective interfacial area in a rotating packed bed with structured Stainless Steel Wire mesh packing
    Chemical Engineering Science, 2017
    Co-Authors: Zhiqiang Zhao, Moses Arowo, Jian-feng Chen
    Abstract:

    Packing plays an important role on the mass transfer and mixing in a rotating packed bed (RPB) which is regarded as an important gas-liquid reactor or contactor for process intensification. Stainless Steel Wire mesh packing exhibits good mass transfer performance when applied in a RPB. However, its construction repeatability and mechanical strength should be improved. Therefore, we introduced and designed a novel structured Stainless Steel Wire mesh packing, aiming to overcome the above problems. In this work, the effective interfacial area (ae) in the packing and cavity zones of a RPB with four different types of structured Stainless Steel Wire mesh packings was investigated at various rotational speeds, gas flow rates, and liquid flow rates by using a NaOH-CO2 mass transfer system. A brief analysis of the gas-liquid mass transfer interface area (A) and utilization ratio of packing’s specific surface area (wp) is presented. A modified correlation for the effective interfacial area in the packing zone of the RPB with structured Stainless Steel Wire mesh packing was also proposed, and the predicted values were found to be in agreement with the experimental values with deviations generally within ±15%.

  • gas liquid effective interfacial area in a rotating packed bed
    Industrial & Engineering Chemistry Research, 2012
    Co-Authors: Yong Luo, Haikui Zou, Guang-wen Chu, Zhiqiang Zhao, M P Dudukovic, Jian-feng Chen
    Abstract:

    Stainless Steel Wire mesh packing is widely used for experimental and industrial applications in rotating packed beds (RPBs) for gas–liquid contacting because it has a higher mass-transfer performance than other conventional packings. In this work, the gas–liquid effective interfacial area of a conventional RPB was studied with eight types of Stainless Steel Wire mesh packings, consisting of four different Stainless Steel fibers. Gas–liquid chemisorption with CO2 in NaOH solution was employed to measure the effective interfacial area for all types of packings with different rotational speeds and gas–liquid ratios. An empirical correlation that takes the effects of the fiber diameter and opening size of the Wire mesh into consideration was proposed for the calculation of the gas–liquid effective interfacial area of Stainless Steel Wire mesh packings in a conventional RPB.

A D Nana - One of the best experts on this subject based on the ideXlab platform.

  • fiberWire is superior in strength to Stainless Steel Wire for tension band fixation of transverse patellar fractures
    Injury-international Journal of The Care of The Injured, 2009
    Co-Authors: Victor Kosmopoulos, P B Wright, R E Cote, T J Tayag, A D Nana
    Abstract:

    Abstract Background The metal implants used to achieve fixation of displaced transverse patellar fractures are associated with implant failure, postoperative pain and a significant re-operation rate. Recent studies have examined braided suture as a possible alternative to Stainless Steel Wire to increase patient satisfaction and decrease re-operation rates, but suture has not demonstrated clearly superior fixation strength. FiberWire® is a reinforced braided polyblend suture that has demonstrated superior characteristics to the previous sutures studied and has not to our knowledge been examined as a material for tension band fixation of transverse patellar fractures. Methods Materials testing was performed on repeated samples of No. 5 FiberWire suture and 18-gauge Stainless Steel Wire. The strength and stiffness of each material was measured. The two materials were then used for tension band fixation on a novel transverse patellar fracture model and tested to failure by three-point bending. The constructs included a single Stainless Steel Wire, a single-strand FiberWire tied with a sliding knot, double-strand FiberWire tied with sliding knots and double-strand FiberWire tied with a Wagoner's Hitch. The fixation strength and stiffness of the constructs were measured. Findings Unlike Stainless Steel, FiberWire maintained its initial stiffness until failure. Furthermore, during three-point-bend testing, double-strand FiberWire was found to have a significantly higher failure load than Stainless Steel Wire when the suture was tied and locked under the tension produced by a modified Wagoner's Hitch. Interpretation FiberWire is a potentially superior alternative to Stainless Steel Wire in tension band fixation of transverse patellar fractures.

Zhiqiang Zhao - One of the best experts on this subject based on the ideXlab platform.

  • investigation of effective interfacial area in a rotating packed bed with structured Stainless Steel Wire mesh packing
    Chemical Engineering Science, 2017
    Co-Authors: Zhiqiang Zhao, Moses Arowo, Jian-feng Chen
    Abstract:

    Packing plays an important role on the mass transfer and mixing in a rotating packed bed (RPB) which is regarded as an important gas-liquid reactor or contactor for process intensification. Stainless Steel Wire mesh packing exhibits good mass transfer performance when applied in a RPB. However, its construction repeatability and mechanical strength should be improved. Therefore, we introduced and designed a novel structured Stainless Steel Wire mesh packing, aiming to overcome the above problems. In this work, the effective interfacial area (ae) in the packing and cavity zones of a RPB with four different types of structured Stainless Steel Wire mesh packings was investigated at various rotational speeds, gas flow rates, and liquid flow rates by using a NaOH-CO2 mass transfer system. A brief analysis of the gas-liquid mass transfer interface area (A) and utilization ratio of packing’s specific surface area (wp) is presented. A modified correlation for the effective interfacial area in the packing zone of the RPB with structured Stainless Steel Wire mesh packing was also proposed, and the predicted values were found to be in agreement with the experimental values with deviations generally within ±15%.

  • gas liquid effective interfacial area in a rotating packed bed
    Industrial & Engineering Chemistry Research, 2012
    Co-Authors: Yong Luo, Haikui Zou, Guang-wen Chu, Zhiqiang Zhao, M P Dudukovic, Jian-feng Chen
    Abstract:

    Stainless Steel Wire mesh packing is widely used for experimental and industrial applications in rotating packed beds (RPBs) for gas–liquid contacting because it has a higher mass-transfer performance than other conventional packings. In this work, the gas–liquid effective interfacial area of a conventional RPB was studied with eight types of Stainless Steel Wire mesh packings, consisting of four different Stainless Steel fibers. Gas–liquid chemisorption with CO2 in NaOH solution was employed to measure the effective interfacial area for all types of packings with different rotational speeds and gas–liquid ratios. An empirical correlation that takes the effects of the fiber diameter and opening size of the Wire mesh into consideration was proposed for the calculation of the gas–liquid effective interfacial area of Stainless Steel Wire mesh packings in a conventional RPB.

Moses Arowo - One of the best experts on this subject based on the ideXlab platform.

  • investigation of effective interfacial area in a rotating packed bed with structured Stainless Steel Wire mesh packing
    Chemical Engineering Science, 2017
    Co-Authors: Zhiqiang Zhao, Moses Arowo, Jian-feng Chen
    Abstract:

    Packing plays an important role on the mass transfer and mixing in a rotating packed bed (RPB) which is regarded as an important gas-liquid reactor or contactor for process intensification. Stainless Steel Wire mesh packing exhibits good mass transfer performance when applied in a RPB. However, its construction repeatability and mechanical strength should be improved. Therefore, we introduced and designed a novel structured Stainless Steel Wire mesh packing, aiming to overcome the above problems. In this work, the effective interfacial area (ae) in the packing and cavity zones of a RPB with four different types of structured Stainless Steel Wire mesh packings was investigated at various rotational speeds, gas flow rates, and liquid flow rates by using a NaOH-CO2 mass transfer system. A brief analysis of the gas-liquid mass transfer interface area (A) and utilization ratio of packing’s specific surface area (wp) is presented. A modified correlation for the effective interfacial area in the packing zone of the RPB with structured Stainless Steel Wire mesh packing was also proposed, and the predicted values were found to be in agreement with the experimental values with deviations generally within ±15%.

  • 3d numerical simulation of a rotating packed bed with structured Stainless Steel Wire mesh packing
    Chemical Engineering Science, 2017
    Co-Authors: Moses Arowo, Jian-feng Chen
    Abstract:

    Abstract Computational fluid dynamics (CFD) is a powerful tool used to investigate the hydrodynamics in various chemical devices. As one of the typical process intensification equipment, rotating packed beds (RPBs) have been widely used in various fields. However, it is still a challenge to obtain the detailed information by CFD analysis due to the complex packing structure in the rotor of a RPB. In this study, we firstly built a three dimensional (3D) physical model with the same structure and size as the physical RPB and structured Stainless Steel Wire mesh packing. The realizable k - e model is applied to investigate the gas pressure drop, pressure distribution, and gas flow at different rotational speeds and gas flow rates. Based on the breakdown of the overall gas pressure drop, the gas pressure drop in the inner cavity zone is the major contributor to the overall gas pressure drop under most operation conditions. The 3D physical model describing the actual RPB can give deep understanding of the gas flow in the entire RPB as well as the gas flow behavior around every fiber of the packing. Furthermore, one special phenomenon of strong turbulence, named as gas-side end effect, was revealed in the outer annular packing zone in the rotor.

P B Wright - One of the best experts on this subject based on the ideXlab platform.

  • fiberWire is superior in strength to Stainless Steel Wire for tension band fixation of transverse patellar fractures
    Injury-international Journal of The Care of The Injured, 2009
    Co-Authors: Victor Kosmopoulos, P B Wright, R E Cote, T J Tayag, A D Nana
    Abstract:

    Abstract Background The metal implants used to achieve fixation of displaced transverse patellar fractures are associated with implant failure, postoperative pain and a significant re-operation rate. Recent studies have examined braided suture as a possible alternative to Stainless Steel Wire to increase patient satisfaction and decrease re-operation rates, but suture has not demonstrated clearly superior fixation strength. FiberWire® is a reinforced braided polyblend suture that has demonstrated superior characteristics to the previous sutures studied and has not to our knowledge been examined as a material for tension band fixation of transverse patellar fractures. Methods Materials testing was performed on repeated samples of No. 5 FiberWire suture and 18-gauge Stainless Steel Wire. The strength and stiffness of each material was measured. The two materials were then used for tension band fixation on a novel transverse patellar fracture model and tested to failure by three-point bending. The constructs included a single Stainless Steel Wire, a single-strand FiberWire tied with a sliding knot, double-strand FiberWire tied with sliding knots and double-strand FiberWire tied with a Wagoner's Hitch. The fixation strength and stiffness of the constructs were measured. Findings Unlike Stainless Steel, FiberWire maintained its initial stiffness until failure. Furthermore, during three-point-bend testing, double-strand FiberWire was found to have a significantly higher failure load than Stainless Steel Wire when the suture was tied and locked under the tension produced by a modified Wagoner's Hitch. Interpretation FiberWire is a potentially superior alternative to Stainless Steel Wire in tension band fixation of transverse patellar fractures.