Pulsating flow of stationary elastic-viscous fluids in flat-wall channel

Begjanov, A. Sh.; Shukurov, Z. K.; Yuldoshev, B. Sh.

doi:10.1051/e3sconf/202340101030

E3S Web of Conf.

2023

DOI: 10.1051/e3sconf/202340101030

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Pulsating flow of stationary elastic-viscous fluids in flat-wall channel

A. Sh. Begjanov,

Z. K. Shukurov,

B. Sh. Yuldoshev

Abstract: In this article, a specific problem of pulsating flow of visco-elastic fluids in a flat channel in a stationary state was solved. The main goal is to study the movement of visco-elastic fluids based on simplified mathematical models and to determine the existing hydrodynamic laws and hydrodynamic effects in the pulsating flow of a Newtonian fluid based on the obtained results.

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2024

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Cited by 2 publications

References 21 publications

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Examining laminar, non-stationary viscoelastic fluid flow between two parallel planes

Navruzov,

Begjanov,

Abdikarimov

et al. 2024

BIO Web Conf.

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The generalized Maxwell model is used to handle problems involving the unsteady flow of a viscoelastic fluid in a flat channel under the effect of a constant pressure gradient. Formulas for fluid flow, velocity distribution, and other hydrodynamic characteristics were found. Transient processes during unsteady flow of a viscoelastic fluid in a flat channel are investigated based on the discovered formulas. The analysis’s conclusions demonstrated that, at small Debord number values, the procedures of changing a viscoelastic fluid’s properties from an unstable to a stationary state essentially don’t differ from those of a Newtonian fluid. Exceeding the Debord number relatively unity, it has been established that the process of transition of a viscoelastic fluid from an unsteady state to a stationary state is of a wave nature, in contrast to the transition process of a Newtonian fluid, and the transition time is several times longer than that of a Newtonian fluid. It was also discovered that perturbed processes can arise during the transition. These disturbances occurring in unsteady flows of a viscoelastic fluid can be stabilized by mixing the Newtonian fluid within it. The implementation of this property is important in preventing technical failures or malfunctions.

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Examining laminar, non-stationary viscoelastic fluid flow between two parallel planes

Navruzov,

Begjanov,

Abdikarimov

et al. 2024

BIO Web Conf.

Self Cite

View full text Add to dashboard Cite

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Oscillatory flow of rheological complex fluid in a flat channel

Navruzov,

Sharipova

2024

E3S Web of Conf.

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The article examines the oscillatory flow of rheological complex fluids in a flat channel, in which the rheological complex fluid was obtained based on the Maxwell model, and its mixture is described based on the Newtonian fluid model. Both mixtures of fluids are represented as a homogeneous model of a two-component liquid. In this case, differential equations of motion of homogeneous liquid mixtures are given. Based on this equation, the problem of oscillatory flows of rheological complex fluids in a flat channel is solved analytically. When solving, formulas are given for determining the longitudinal velocity. Using the obtained formulas, graphs of the longitudinal velocity distribution over the cross section of the channel are determined depending on the change in the oscillation frequency parameter, and with their help, appropriate conclusions are drawn.

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Pulsating flow of stationary elastic-viscous fluids in flat-wall channel

Cited by 2 publications

References 21 publications

Examining laminar, non-stationary viscoelastic fluid flow between two parallel planes

Examining laminar, non-stationary viscoelastic fluid flow between two parallel planes

Oscillatory flow of rheological complex fluid in a flat channel

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