Purpose The investigation concentrated on studying a distinct category of tubular heat
exchanger that uses swirling airflow over tube bundle maintained at constant heat flux. Swirl …

Understanding internal vortex breakdowns (VBs) and their trajectories in sealed cylinders
are important for the scientific and industrial applications with which they are linked …

This experimental investigation aimed to analyze the impact of a unique design of swirl
generator airflow on the performance of a tubular heat exchanger operating with axial flow …

This experimental study reveals a striking nonlinear-physics phenomenon of fundamental
and practical interest—changing conditions at the interface of two swirling immiscible fluids …

Experiments were carried out in a water-filled elongated cup of a “kitchen scale,” where
motion was created by a rotating disk with various micro-and nano-roughness in the top of …

It has been found, for the first time, that rotating polygons (m= 1, 2) can exist in a system of
two immiscible fluids, which can be in three different steady states: stable funnel, cycling …

Flows of an oil-glycerin system of immiscible Newtonian fluids, driven by the independent
rotation of the boundaries of a vertical cylinder with axial rod are investigated numerically …

Experiments were carried out in a water-filled elongated cup of a “kitchen scale”, where
motion was created by a rotating disk with various micro-and nano-roughness in the top of …