Heat transfer of swirling impinging jets ejected from Nozzles with twisted tapes utilizing CFD technique

Amini, Younes; Mokhtari, Mojtaba; Haghshenasfard, Masoud; Gerdroodbary, M. Barzegar

doi:10.1016/j.csite.2015.08.001

Cited by 112 publications

(16 citation statements)

References 33 publications

(26 reference statements)

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“…The results presented in the literature indicate a growing interest in experimental and simulation studies of the structured packings . Alekseenko et al presented a special shape for the structured packing in terms of a double‐corrugated structure to increase the specific surface area to 500–750 m 2 m −3 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of New Wire Gauze High‐Capacity Structured Packing with Varied Inclination Angle

2017

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A new high‐capacity structured packing (PACK‐1300) was investigated for the separation of mixtures with low separation factor. The effect of the inclination angle was studied. In order to enhance the pressure drop and the separation efficiency of PACK‐1300, the surface area and porosity were increased. In addition, comprehensive parametric studies were performed to evaluate the dry/wet pressure drop and mass‐transfer efficiency under various operating conditions. Increasing the inclination angle enhances the capacity and decreases the efficiency of the packings. PACK‐1300W reduced the dry and wet pressure drop significantly more than PACK‐1300Z. Finally, the separation efficiency results show that the height equivalent to a theoretical plate decreased with decreasing inclination angle.

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Section: Introductionmentioning

confidence: 99%

Characterization of New Wire Gauze High‐Capacity Structured Packing with Varied Inclination Angle

2017

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“…The results presented in the literature indicate a growing interest in experimental and simulation studies of the structured packings . Moreover, several parameter studies and geometry design are implemented to improve the performance of the structured packings .…”

Section: Introductionmentioning

confidence: 99%

Experimental characterization of new wire gauze with high capacity structured packing

Amini

Karimi-Sabet²,

Esfahany

2016

Can J Chem Eng

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In this paper, experimental studies are conducted to introduce a new high capacity structured packing (PACK‐2100) for the separation of mixtures with low separation factor. To improve the performance of this packing, extensive consideration is given to the construction of a new wire gauze structure packing through various hydrodynamic and mass transfer analyses. The surface area and porosity of new structured packing (PACK‐2100) are increased to enhance the pressure drop and the separation efficiency. In addition, comprehensive parametric studies are performed to evaluate the dry/wet pressure drop and mass transfer efficiency in different operating conditions of the presented packing. Our findings show that this new structured packing reduces dry and wet pressure drops more than 25 % compared to the traditional packing that is used for difficult separations such as Dixon 1/8, with the same specific surface area. In addition, the achieved Height Equivalent Theoretical Plate (HETP) of PACK‐2100 is significantly lower (about 20 %) than other conventional packings. Thus, the PACK‐2100 is highly recommended for the separation of stable isotopes such as 18O and 13C in the distillation process.

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“…Structured grids were used due to their ability to handle complex problems. [30] When the following criteria were satisfied, the calculations were considered convergent. The first criterion is that the residuals are~10 −3 or higher, and the simulations converge within the max iterations.…”

Section: Model Verificationmentioning

confidence: 99%

Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

et al. 2020

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Sieve plate packing is a newly developed packing that has been used in several industries due to its simple structure and operating flexibility, and no liquid flooding. In this work, first, systematic experiments were conducted to measure the pressure drop of gas flow through six sieve plate packings. The results indicated that the geometric characteristics of the packing have complicated effects on the pressure drops. Based on this, CFD simulations on the gas flow field were conducted using the realizable k‐ε model, and flow behaviours such as the pressure drop, pressure nephogram, and velocity distributions within different packings were obtained. The simulation results clearly showed interesting flow patterns, including the contraction and expansion of the gas stream through the sieve hole, the flow separation on the sharp edge of the hole, and the vortexes formed when gas impacts the downstream plate. By comparing the flow patterns and the pressure drop under different packings operating at different conditions, the effects of the geometric characteristics of the packing on the pressure drop could be clearly distinguished from the flow behaviours, so that the variations in pressure drop with various packing structures were clearly indicated. Finally, based on the experimental data and the simulated results, correlations for the prediction of the pressure drops were proposed. This work will provide a useful basis for understanding the flow behaviour of gas and liquid two‐phase flow in sieve plate packing.

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Heat transfer of swirling impinging jets ejected from Nozzles with twisted tapes utilizing CFD technique

Cited by 112 publications

References 33 publications

Characterization of New Wire Gauze High‐Capacity Structured Packing with Varied Inclination Angle

Characterization of New Wire Gauze High‐Capacity Structured Packing with Varied Inclination Angle

Experimental characterization of new wire gauze with high capacity structured packing

Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

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