Title:Heat Transfer Mechanisms by Jet Impingement on a Convex Surface : A Review
Volume: 1
Issue: 5
Author(s): Tongbeum Kim*, Dylan Barratt, Michael Atkins, Sjouke Schekman and Tian J. Lu
Affiliation:
- State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016,China
Keywords:
Convex surface, fluidic mechanisms, jet impingement, potential core, transition, turbulent strength.
Abstract: Jet impingement in engineering applications is used because of the capacity to transport
high levels of heat flux from a surface of interest for cooling purposes. Thus far, based on a vast
database of experiments and numerical simulations, several correlations have been established for
local and average heat transfer on target surfaces as functions of relevant fluid properties and geometric
parameters. In addition to these correlations, significant efforts have been made to gain fundamental
understanding of jet impingement in varying configurations. However, the physics governing
heat transfer by jet impingement is conjectured and even unclear. Thus, this article collates and
discusses recent advances in fluidic mechanisms underlying the heat transfer by submerged jet impingement
on a convex surface. The fluid properties developed on a convex surface due to jet impingement
with varied characteristics, including jet-to-target surface spacing, interchange their primary
roles in heat transfer from/to a convex surface. Particularly, conjectures associated with relevant
fluidic mechanisms that have been widely accepted, are confirmed, clarified, and corrected.
