The typical installation of a heat exchange device usually involves a flow contraction at the core entrance and a flow expansion at the core exit. Repeated flow Contraction and expansion are experienced in the flow passages of some compact heat exchangers. The latter refers to the flow passages in the plate-fin type with louvered fins or stripped fins and in the tubular type with dimpled-circul...

The purpose of this investigation is to determine if adding an isolated cylinder the domain can improve forced convection in laminar case sudden expansion flow a two-dimensional channel. range Reynolds number (1-200) and prattle 0.71, impact different cross-stream locations (x=10.4,10.8 11.2) circular on flow, thermal properties have been computationally studied (air). COMSOL Multiphysics utili...

The acoustic energy balance of a sudden area expansion is known to be altered in the presence mean flow. In this work, Ronneberger’s quasi-steady model describing response sustaining subsonic flow arbitrary Mach number revisited using absorption coefficient, shown function inlet [Formula: see text], cross-sectional ratio and upstream reflection coefficient text]. These analytical predictions ar...

Introduction: This paper studies the frequency with which hydrodynamic parameters change in sudden expansion section of axisymmetric pressure flow, based on boundary layer equations. Methods: The suggested method reveals regularity changes flow transitional area, making it possible to obtain a velocity profile any cross-section under common initial and conditions. Based general solutions, we st...