Addressing the effect of hole design on the performance of perforated plates

Abstract

Perforated plates have been used in a variety of applications for many years. Shading panels [1], sound absorption [2], separators and filters [3], heat exchangers [4], and applications requiring homogeneous flows [5] are just a few examples. Homogeneous flows are critical for climatization of enclosures and cooling purposes such as gas turbine blades. This ensures that the fluid is distributed evenly, and in case of blades it protects the blade surface from hot gases. This study is devoted to understanding fluid flow in perforated plates. Their performance and dependability are critical factors that are object of study in order to build, develop, evaluate, and manage perforated plates to maximize their functionality. The hole geometry has a direct impact on the transport properties of these plates. Understanding how the geometry of holes affects fluid flow is thus critical for designing increasingly efficient systems. As a result, we investigate the effects of hole design on fluid flow using a Computational Flow Dynamics approach. Plates with round holes and plates with square holes with porosities ranging from 0.2 to 0.8 are investigated. The numerical investigation is carried out for Reynolds numbers ranging from 102 to 104. Among the outcomes are equations for loss factors for each design.