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Journal ArticleDOI

Continuous flow systems. Distribution of residence times

P.V. Danckwerts
- 01 Dec 1995 - 
- Vol. 50, Iss: 24, pp 3857-3866
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TLDR
In this article, the authors proposed a method to predict the distribution of residence-times in large systems by using distribution-functions for residencetimes, which can be used to calculate the etficiencies of reactors and blenders.
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This article is published in Chemical Engineering Science.The article was published on 1995-12-01. It has received 1416 citations till now. The article focuses on the topics: Residence time distribution & Perfect mixing.

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Citations
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Journal ArticleDOI

Hydraulic Analysis of Orlando Easterly Wetland

TL;DR: In this paper, bromide tracer tests revealed and quantified inefficiencies (short circuiting and dead zones) in the hydraulic performance within individual treatment cells and the wetland system under the operating conditions studied.
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Residence time distributions for hydrologic systems: Mechanistic foundations and steady-state analytical solutions

TL;DR: In this article, the physical mechanisms for generating residence time distributions (RTDs) in hydrologic systems with a focus on steady-state analytical solutions are presented, as well as the conditions for appropriate use of analytical solutions.
Journal ArticleDOI

Numerical study of liquid-liquid mixing in helical pipes

TL;DR: In this article, the authors investigated the optimal mixing behavior as a function of different parameters for a wide range of relevant Schmidt and Reynolds numbers for laminar flow conditions and found that the Reynolds number has a more complex impact on mixing efficiency than Schmidt number.
Journal ArticleDOI

Axial dispersion in metal foams and streamwise-periodic porous media

TL;DR: In this paper, the axial dispersion coefficients of metal foams and laser sintered reactors were compared in terms of axial dispersions and pressure drops, and the results showed the high potential of foam reactors for catalyst driven reactions.
Journal ArticleDOI

Application of Second‐Type Boundaries in Unsaturated Flow Modeling

TL;DR: In this article, the authors identify physical scenarios in which a second-type boundary (specified gradient) may be the most appropriate boundary condition, discusses a procedure for implementing a specified gradient boundary condition in a flow code, and presents an application of the procedure in the simulation of two practical problems.
References
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Journal ArticleDOI

Kinetic Theory of Gases

R. D. Present, +1 more
- 01 Apr 1959 - 
Journal ArticleDOI

The Definition and Measurement of Some Characteristics of Mixtures

TL;DR: In this paper, it is shown that the important features of such mixtures can be expressed by two statistically defined quantities, the scale and the intensity of segregation, and methods of measuring these are suggested.