scholarly journals Microscopic construction of the two-fluid model for superfluid helium-4

2009 ◽  
Vol 12 (4) ◽  
pp. 657-663
Author(s):  
Shygorin ◽  
Svidzynskyj
Keyword(s):  
Superfluid Helium ◽  
Fluid Model ◽  
Helium 4 ◽  
Two Fluid Model ◽  
Two Fluid

Comments on the article: ‘The two-fluid model of the helium film’

1973 ◽  
Vol 333 (1593) ◽  
pp. 261-263 ◽  
Keyword(s):  
Superfluid Helium ◽  
Fluid Model ◽  
Convection Velocity ◽  
Thermodynamic Approach ◽  
Helium Film ◽  
Helium Films ◽  
Third Sound ◽  
Superfluid Flow ◽  
Two Fluid Model ◽  
Two Fluid

It is argued that the thermodynamic approach used by Goodstein and Saffman in their theory of thin superfluid helium films is incorrect. Their theory does not explain Keller’s experiment. The value they obtained for the convection velocity of third sound in a film with superfluid flow is consequently unfounded theoretically. Their calculation of third sound attenuation is shown to be incomplete.

scholarly journals A PISO-like algorithm to simulate superfluid helium flow with the two-fluid model

2015 ◽  
Vol 187 ◽  
pp. 20-28 ◽  
Author(s):  
Cyprien Soulaine ◽  
Michel Quintard ◽  
Hervé Allain ◽  
Bertrand Baudouy ◽  
Rob Van Weelderen
Keyword(s):  
Superfluid Helium ◽  
Fluid Model ◽  
Helium Flow ◽  
Two Fluid Model ◽  
Two Fluid

scholarly journals Heat flux during boiling of superfluid helium inside a porous body based on a two-fluid model

2021 ◽  
Vol 2088 (1) ◽  
pp. 012038
Author(s):  
Yu Yu Puzina ◽  
A P Kryukov
Keyword(s):  
Heat Flux ◽  
Porous Structure ◽  
Superfluid Helium ◽  
Fluid Model ◽  
Quantitative Agreement ◽  
Molecular Kinetic Theory ◽  
Two Fluid Model ◽  
Experimental Values ◽  
Semi Empirical ◽  
Two Fluid

Abstract The calculation of the recovery heat flux density is considered for superfluid helium boiling on the cylindrical heater inside porous structure. System of equations is based on the methods of continuum mechanics and molecular kinetic theory. The new type of boundary condition on the vapor-liquid interface based on the two-fluid model is formulated. Heat transfer in a free liquid is described by the Gorter-Mellink semi-empirical theory. Inside the porous structure the processes is discussed by the two-fluid model and filtration equation. Experimental data on the boiling of superfluid helium inside the porous structure are interpreted based on the formulated mathematical model. The qualitative and in some cases quantitative agreement between the calculated and experimental values of the recovery heat flux were obtained in the considered range of parameters

scholarly journals Natural modes of the two-fluid model of two-phase flow

2021 ◽  
Vol 33 (3) ◽  
pp. 033324
Author(s):  
Alejandro Clausse ◽  
Martín López de Bertodano
Keyword(s):  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Two Phase ◽  
Natural Modes ◽  
Two Fluid Model ◽  
Two Fluid

Self-consistent hydrodynamic two-fluid model of vortex plasma

2021 ◽  
Vol 33 (3) ◽  
pp. 037116
Author(s):  
Victor L. Mironov
Keyword(s):  
Fluid Model ◽  
Self Consistent ◽  
Two Fluid Model ◽  
Two Fluid

scholarly journals Mathematical study on two-fluid model for flow of K–L fluid in a stenosed artery with porous wall

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
R. Ponalagusamy ◽  
Ramakrishna Manchi
Keyword(s):  
Theoretical Study ◽  
Fluid Model ◽  
Porous Wall ◽  
Governing Equations ◽  
Rate Of Increase ◽  
Special Cases ◽  
Stenosed Artery ◽  
Flow Through ◽  
Two Fluid Model ◽  
Two Fluid

AbstractThe present communication presents a theoretical study of blood flow through a stenotic artery with a porous wall comprising Brinkman and Darcy layers. The governing equations describing the flow subjected to the boundary conditions have been solved analytically under the low Reynolds number and mild stenosis assumptions. Some special cases of the problem are also presented mathematically. The significant effects of the rheology of blood and porous wall of the artery on physiological flow quantities have been investigated. The results reveal that the wall shear stress at the stenotic throat increases dramatically for the thinner porous wall (i.e. smaller values of the Brinkman and Darcy regions) and the rate of increase is found to be 18.46% while it decreases for the thicker porous wall (i.e. higher values of the Brinkman and Darcy regions) and the rate of decrease is found to be 10.21%. Further, the streamline pattern in the stenotic region has been plotted and discussed.

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