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Drag coefficient

About: Drag coefficient is a research topic. Over the lifetime, 14471 publications have been published within this topic receiving 303196 citations. The topic is also known as: drag factor.


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Journal ArticleDOI
TL;DR: In this article, a general classification of two-phase flows and a number of possible ways to formulate two-fluid models are discussed, and a general procedure to develop such a model is presented.

522 citations

Journal ArticleDOI
TL;DR: In this article, a simple but reliable correlation for a drag coefficient, CD, of single bubbles under a wide range of fluid properties, bubble diameter and acceleration of gravity were developed based on a balance of forces acting on a bubble in a stagnant liquid and available empirical correlations of terminal rising velocities of single bubble.
Abstract: Simple but reliable correlations for a drag coefficient, CD, of single bubbles under a wide range of fluid properties, bubble diameter and acceleration of gravity were developed based on a balance of forces acting on a bubble in a stagnant liquid and available empirical correlations of terminal rising velocities of single bubbles. The proposed CD consists of three equations, each of which corresponds to pure, slightly contaminated and contaminated systems. The effect of a frictional pressure gradient due to a liquid flow is also taken into account by introducing a concept of an effective body acceleration. Terminal rising velocities of single bubbles were calculated using the proposed CD, and compared with measured data under the condition of 10-2

517 citations

Journal ArticleDOI
TL;DR: In this article, the energy-minimization multi-scale (EMMS) approach is adapted for investigating the dependence of drag coefficient on structure parameters, and the structure-dependent drag coefficients calculated from the EMMS approach are then incorporated into the two-fluid model to simulate the behavior of concurrent-up gas-solid flow in a riser.

513 citations

Journal ArticleDOI
TL;DR: Holzer and Sommerfeld as discussed by the authors proposed a simple correlation formula for the standard drag coefficient (i.e., a single stationary particle in a uniform flow) of arbitrary shaped particles, which can be easily used in the frame of Lagrangian computations where also the particle orientation along the trajectory is computed.

513 citations

Journal ArticleDOI
TL;DR: In this article, a circular cylinder was placed in a flowing fluid with its axis across the stream and the fluctuating lift and drag forces, and the steady drag force were measured.
Abstract: A circular cylinder was placed in a flowing fluid with its axis across the stream. The fluctuating lift and drag forces, and the steady drag force were measured. The results for the stationary cylinder were given in a previous paper (Bishop & Hassan 1964). Here, the results are described and summarized for a cylinder that is made to oscillate transversely in a direction perpendicular to the stream.

511 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023307
2022688
2021489
2020504
2019504
2018456