A numerical study in a two-dimensional, axisymmetric cylindrical geometry is performed to evaluat... more A numerical study in a two-dimensional, axisymmetric cylindrical geometry is performed to evaluate the effect of Marangoni convection in shallow liquid layers. The test fluid used is silicone oil. The study aims to understand Marangoni convection for a range of temperature gradients (9.0 K, 11.5 K, and 14.0 K), layer depths (4.0 mm, 4.5 mm, and 5.0 mm) under earth gravity (1.0 g), and microgravity (0.5 ×10-3 g) conditions. The finite element method is used to solve the present problem and the numerical models were created using COMSOL V5.6 commercial tool. The influence of fluid meniscus on Marangoni convection is analyzed and found out the thermo-capillary force is less significant in driving the fluid. The present investigation in microgravity ensures the Marangoni convection dominates natural convection. For all the test conditions, it is found that Marangoni convection is influenced more by temperature difference than layer depths. It is observed that the velocity magnitude devi...
In this paper, the lattice Boltzmann approach is carried out to study the double-diffusive natura... more In this paper, the lattice Boltzmann approach is carried out to study the double-diffusive natural convection in a space encapsulating liquid metal is presented. The Uniform magnetic field is applied horizontally at the square domain and an insulated rectangular block is kept stationary at the center of the cavity. The linear increment of temperature and concentration is used at the left wall and cold temperature is applied at the right wall. Horizontal walls are adiabatic conditions. Horizontal walls are adiabatic conditions. The numerical analysis is performed at the range of Rayleigh number (103 ≤ Ra ≤ 105), Lewis number (2 ≤ Le ≤ 10), buoyancy ratio (-2 ≤ N ≤ 2), Hartmann number (0 ≤ Ha ≤ 50) with Prandtl number (Pr) = 0.054. Results show that the increase in Ra tends to maximize heat and mass transfer rate while increasing Ha, decreases the same. The rise in Le diminishes heat transfer marginally but increasing the mass transfer significantly. The effect of N differs with diffe...
A numerical study in a two-dimensional, axisymmetric cylindrical geometry is performed to evaluat... more A numerical study in a two-dimensional, axisymmetric cylindrical geometry is performed to evaluate the effect of Marangoni convection in shallow liquid layers. The test fluid used is silicone oil. The study aims to understand Marangoni convection for a range of temperature gradients (9.0 K, 11.5 K, and 14.0 K), layer depths (4.0 mm, 4.5 mm, and 5.0 mm) under earth gravity (1.0 g), and microgravity (0.5 ×10-3 g) conditions. The finite element method is used to solve the present problem and the numerical models were created using COMSOL V5.6 commercial tool. The influence of fluid meniscus on Marangoni convection is analyzed and found out the thermo-capillary force is less significant in driving the fluid. The present investigation in microgravity ensures the Marangoni convection dominates natural convection. For all the test conditions, it is found that Marangoni convection is influenced more by temperature difference than layer depths. It is observed that the velocity magnitude devi...
In this paper, the lattice Boltzmann approach is carried out to study the double-diffusive natura... more In this paper, the lattice Boltzmann approach is carried out to study the double-diffusive natural convection in a space encapsulating liquid metal is presented. The Uniform magnetic field is applied horizontally at the square domain and an insulated rectangular block is kept stationary at the center of the cavity. The linear increment of temperature and concentration is used at the left wall and cold temperature is applied at the right wall. Horizontal walls are adiabatic conditions. Horizontal walls are adiabatic conditions. The numerical analysis is performed at the range of Rayleigh number (103 ≤ Ra ≤ 105), Lewis number (2 ≤ Le ≤ 10), buoyancy ratio (-2 ≤ N ≤ 2), Hartmann number (0 ≤ Ha ≤ 50) with Prandtl number (Pr) = 0.054. Results show that the increase in Ra tends to maximize heat and mass transfer rate while increasing Ha, decreases the same. The rise in Le diminishes heat transfer marginally but increasing the mass transfer significantly. The effect of N differs with diffe...
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Papers by satheesh anbalagan