Characterization of dilute gas-solids flows using the rescaled range analysis

Cabrejos, Francisco J.; Klinzing, George E.

doi:10.1016/0032-5910(95)02980-g

Cited by 27 publications

(3 citation statements)

References 11 publications

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“…Rescaled range (R/S) analysis was first introduced by an Egyptian hydrologist Hurst (1951) while studying the water storage problems related with the Nile River (Feder, 1988;Cabrejos and Klinzing, 1995). This type of analysis estimates and identifies long-term persistence or correlation in measured time series.…”

Section: Rescaled Range Analysismentioning

confidence: 99%

“…Latifi et al (1994) used Hurst's rescaled range analysis to study the random local liquid-solid mass transfer fluctuations from a trickle-bed reactor. Cabrejos and Klinzing (1995) adopted this approach to predict the flow patterns of fully developed flows of dilute gas-solid suspensions inside horizontal straight pipes by analyzing absolute and differential pressure fluctuations. Kikuchi et al (1997) used this method to distinguish homogeneous bubble flow and heterogeneous churn-turbulent flow in a 2-D bubble column.…”

Section: Rescaled Range Analysis In Multiphase Flowmentioning

confidence: 99%

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Characterization of Gas Spouted Beds Using the Rescaled Range Analysis

Xu¹,

Bao²,

Wei³

et al. 2004

Can J Chem Eng

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Spouted bed technology has been widely used for a variety of applications, such as drying, coating, granulation and chemical reactors for catalytic and/or non-catalytic reactions. To optimize the design and operation of spouted beds, the different flow regimes and their transitions in spouted beds should be well characterized and defined. Previous recognition of spouted bed flow regimes reported in the literature had usually been obtained from visual observations, which inevitably introduced some arbitrariness and subjectivity. Moreover, most industrial vessels are not transparent and visual observations are even impossible. Thus new nonvisual approaches are required. Although pressure fluctuation analysis has been extensively utilized in fluidized beds, its applications to spouted beds are sparse. As demonstrated by the previous research work in the research group of this contribution (Wang et al, 2001), pressure fluctuation analysis appears to be a promising technique for spouted bed regime identification.

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Section: Rescaled Range Analysismentioning

confidence: 99%

Section: Rescaled Range Analysis In Multiphase Flowmentioning

confidence: 99%

Characterization of Gas Spouted Beds Using the Rescaled Range Analysis

Xu¹,

Bao²,

Wei³

et al. 2004

Can J Chem Eng

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“…Fractal and chaos theory has attracted considerable attention in recent years, and some scientists have done research on its theories and applications [1][2][3]. Among these theories and methods, rescaled range analysis method is an important part of fractal theory [4][5][6][7][8]. The rescaled range analysis originated in hydrology where it was used by Hurst to determine the design of an optimal reservoir based on the given record of observed discharges from the lake.…”

Section: Introductionmentioning

confidence: 99%

A New Method to Determine the Periodicity of Time Series

Liu

Hong

Dong

2010

AMM

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Rescaled range (R/S) analysis has regained in popularity as a robust tool for the examination of long-term dependence. This paper modified the R/S method to determine the periodicity. We firstly apply the modified method to artificial time series for investigating the validity of the new method. Then the proposed technique is employed to research periodicity of the sunspot time series and the results indicate the robustness of the modified method.

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