Evaluation of wall friction models for riser flow
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- 作者：Jan Hendrik Cloetea ; Schalk Cloeteb ; Stefan Radlc ; Shahriar Aminia ; b ; shahriar.amini@sintef.no" class="auth_mail" title="E-mail the corresponding author
- 关键词：Fluidised bed ; Riser ; Kinetic theory of granular flow ; Wall friction model ; Particle-wall collisions ; Two-fluid model
- 刊名：Powder Technology
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：303
- 期：Complete
- 页码：156-167
- 全文大小：1308 K
文摘
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Johnson & Jackson (J&J) and Schneiderbauer (SB) wall friction models are compared.
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J&J with partial slip settings fails to predict clustering in rapid, dilute flows.
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Near free-slip settings improve results, but overestimate cluster slip at the wall.
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SB yields reasonable results in all cases with a single set of model coefficients.
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SB is therefore recommended as replacement for the popular J&J model.