Abstract
The drag force on a particle in a multiparticle suspension is a function of the particle-fluid relative velocity and of the particle volume concentration. Its determination heavily relies on experimental observations, as theoretical support is still limited to viscous flow regime and dilute solid concentrations. When uniform particle suspensions are considered, there is a certain abundance of experimental data available which has permitted the proposition of simple and reliable relationships for the determination of the drag force: these relationships are normally expressed through the use of the so-called "voidage function", i.e. a function by which the drag force on an isolated particle has to be multiplied in order to obtain the drag force on a particle in a multiparticle suspension. The extension of the approach mentioned above to suspensions made up of particles differing in size and density has been attempted here and new simple relationships are presented for the case of binary-solid systems. The basic idea draws an analogy between binarysolid suspension and single-particle suspensions thereby making possible the use of well established results. The simple relationships obtained for the estimation of the drag force on a particle in a binary-solid suspension have been tested, with satisfactory success, against experimental data available in literature.
| Original language | English |
|---|---|
| Article number | A29 |
| Journal | International Journal of Chemical Reactor Engineering |
| Volume | 10 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
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Keywords
- Binary-solid mixtures
- Drag force
- Suspensions
- Voidage function
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Fluid-particle drag force in binary-solid suspensions. / Di Felice, Renzo; Rotondi, Marco.
In: International Journal of Chemical Reactor Engineering, Vol. 10, No. 1, A29, 2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fluid-particle drag force in binary-solid suspensions
AU - Di Felice, Renzo
AU - Rotondi, Marco
PY - 2012
Y1 - 2012
N2 - The drag force on a particle in a multiparticle suspension is a function of the particle-fluid relative velocity and of the particle volume concentration. Its determination heavily relies on experimental observations, as theoretical support is still limited to viscous flow regime and dilute solid concentrations. When uniform particle suspensions are considered, there is a certain abundance of experimental data available which has permitted the proposition of simple and reliable relationships for the determination of the drag force: these relationships are normally expressed through the use of the so-called "voidage function", i.e. a function by which the drag force on an isolated particle has to be multiplied in order to obtain the drag force on a particle in a multiparticle suspension. The extension of the approach mentioned above to suspensions made up of particles differing in size and density has been attempted here and new simple relationships are presented for the case of binary-solid systems. The basic idea draws an analogy between binarysolid suspension and single-particle suspensions thereby making possible the use of well established results. The simple relationships obtained for the estimation of the drag force on a particle in a binary-solid suspension have been tested, with satisfactory success, against experimental data available in literature.
AB - The drag force on a particle in a multiparticle suspension is a function of the particle-fluid relative velocity and of the particle volume concentration. Its determination heavily relies on experimental observations, as theoretical support is still limited to viscous flow regime and dilute solid concentrations. When uniform particle suspensions are considered, there is a certain abundance of experimental data available which has permitted the proposition of simple and reliable relationships for the determination of the drag force: these relationships are normally expressed through the use of the so-called "voidage function", i.e. a function by which the drag force on an isolated particle has to be multiplied in order to obtain the drag force on a particle in a multiparticle suspension. The extension of the approach mentioned above to suspensions made up of particles differing in size and density has been attempted here and new simple relationships are presented for the case of binary-solid systems. The basic idea draws an analogy between binarysolid suspension and single-particle suspensions thereby making possible the use of well established results. The simple relationships obtained for the estimation of the drag force on a particle in a binary-solid suspension have been tested, with satisfactory success, against experimental data available in literature.
KW - Binary-solid mixtures
KW - Drag force
KW - Suspensions
KW - Voidage function
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U2 - 10.1515/1542-6580.3000
DO - 10.1515/1542-6580.3000
M3 - Article
VL - 10
JO - International Journal of Chemical Reactor Engineering
JF - International Journal of Chemical Reactor Engineering
SN - 1542-6580
IS - 1
M1 - A29
ER -