We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Numerical Analysis in a Lid-Driven Square Cavity with Hemispherical Obstacle in the Bottom
Summary
Researchers numerically analyzed forced convection in a lid-driven square cavity with a hemispherical obstacle at the bottom using the finite volume method and the SIMPLER algorithm. Results showed that increasing the moving wall velocity (5-20 m/s) significantly disrupted the cavity flow field and enhanced mixing, with static pressure varying between 0.6 and 1 m from the moving wall contact region.
Incompressible fluid flow research uses lid-driven cavity as a benchmark issue to measure computer simulation accuracy.Flow within a hollow includes recirculation, turbulence, eddies, instability, impingement, flow separation, attachment with walls (moving and stationary), fluid entrapment in the recirculation area, and other fluid flow phenomena.In this article, forced convection in a lid-driven square cavity with a sliding top wall and hemispherical obstruction is mathematically illustrated.This chamber filled with Newtonian fluid was exposed to a moving wall (5, 10, 15, and 20 m/s), as selected in the literature.The finite volume technique using the SIMPLER algorithm is used to solve the complete governing equations with the Boussinesq approximation, whereas the analytical approach uses the parallel flow assumption.The moving wall disrupts the cavity's flow field, according to the results.Also, moving wall produces great mixing between the flow field below it and the hollow.The static pressure fluctuates from 0.6 m to 1 m (contact with the moving wall).Also, dynamic pressure increases linearly until 0.7 m, then decreases linearly until 1 (contact with the moving wall).In addition, the inner surface's velocity varies randomly along the location while the others remain constant.
Sign in to start a discussion.
More Papers Like This
Investigation of Thermo-Hydraulics in a Lid-Driven Square Cavity with a Heated Hemispherical Obstacle at the Bottom
This paper is not about microplastics; it uses computational fluid dynamics (ANSYS Fluent) to model heat transfer and airflow in a lid-driven square cavity with a heated obstacle — a pure fluid mechanics and thermal engineering study.
The Force on a Magneto-spherical Particle Oscillating in a viscous Fluid Perpendicular to an Impermeable Planar Wall with Slippage
Researchers developed a semi-analytical and collocation-based numerical method to calculate drag forces on a magneto-spherical particle oscillating perpendicular to an impermeable wall in a viscous fluid with slip conditions, computing non-dimensional drag force coefficients across varying frequency, separation distance, and magnetic field parameters.
Bubble rising near a vertical wall: Experimental characterization of paths and velocity
Researchers experimentally characterized the trajectories and velocities of bubbles rising near a vertical wall under different conditions. They found that bubbles consistently migrated away from the wall due to overpressure in the gap between the bubble and the surface. The study reveals that wall proximity affects bubble behavior differently depending on the rising regime, with zigzagging bubbles showing the strongest deflection effects.
Bubble rising near a vertical wall: Experimental characterization of paths and velocity
Researchers experimentally investigated the trajectories of single bubbles rising near a vertical solid wall across rectilinear, planar zigzag, and spiral rising regimes, varying initial wall-bubble distances and Galilei and Bond numbers to characterize how wall proximity affects path and velocity.
Lagrangian and Eulerian perspectives of turbulent transport mechanisms in a lateral cavity
Researchers used both Lagrangian particle tracking and Eulerian statistical methods to study turbulent transport mechanisms in a laterally bounded flow, comparing how each approach characterizes mixing and dispersion near boundaries. The study revealed that boundary effects create preferential transport pathways that standard turbulence models underestimate, with implications for predicting particle and pollutant transport in bounded aquatic environments.