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径向松动风对循环立管气固两相流动的影响 被引量:1
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作者 李庆慧 王启民 +1 位作者 李源 张小辉 《沈阳工业大学学报》 EI CAS 2009年第2期135-138,共4页
为了研究径向松动风对循环立管气固两相流动的影响,在长4500 mm、直径56 mm的循环立管中测量压力梯度、颗粒流率、立管总压差、轴向松动风量和径向松动风量的关系,根据压力梯度与物料浓度的关系确定循环立管的流态.计算结果表明,径向松... 为了研究径向松动风对循环立管气固两相流动的影响,在长4500 mm、直径56 mm的循环立管中测量压力梯度、颗粒流率、立管总压差、轴向松动风量和径向松动风量的关系,根据压力梯度与物料浓度的关系确定循环立管的流态.计算结果表明,径向松动风可以有效增强循环立管粘滑流动流态,即工作流态的稳定性;径向松动风可以有效增加循环立管临界颗粒流率,但颗粒流率较低时,过大的松动风往往会降低立管颗粒流率. 展开更多
关键词 循环立管 径向松动风 临界颗粒流率 粘滑流动 流态
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Analytical Solution for Peristaltic Transport of Viscous Nanofluid in an Asymmetric Channel with Full Slip and Convective Conditions
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作者 Abdelhalim Ebaid Emad H. Aly K. Vajravelu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第7期96-102,共7页
The peristaltic ttow of nanofluids is a relatively new area of research. Scientists are of the opinion that the no-slip conditions at the boundaries are no longer valid and consequently, the first and the second order... The peristaltic ttow of nanofluids is a relatively new area of research. Scientists are of the opinion that the no-slip conditions at the boundaries are no longer valid and consequently, the first and the second order slip conditions should be addressed. In this paper, the effects of slip conditions and the convective boundary conditions at the boundary walls on the peristaltic flow of a viscous nanofluid are investigated for. Also, the exact analytical solutions are obtained for the model. The obtained results are presented through graphs and discussed. The results reveal that the two slip parameters have strong effects on the temperature and the nanoparticles volume fraction profiles. Moreover, it has been seen that the temperature and nanoparticles volume fraction profiles attain certain values when the first slip condition exceeds a specified value. However, no limit value for the second slip parameter has been detected. Further, the effects of the various emerging parameters on the flow and heat transfer characteristics have been presented. 展开更多
关键词 NANOFLUID peristaltic flow slip model convective conditions asymmetric channel
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