Experimental and numerical analysis of heat transfer within cavity working under highly non-stationary flow conditions

Review-Heat Transfer Inside Cavity Flows Trends

“…Many studies investigated the enhancement of heat transfer using acoustic waves, Legay et al [23] summarized the studies that use ultrasound in order to enhance the heat transfer or the cooling process across cavities. A new approach was presented by Rulik et al [24][25][26][27] to study the impact of acoustic waves on heat transfer intensification. The first approach Rulik et al proposed was implemented in a study that aimed at im-proving the performance of gas turbines, through an appropriate cooling technique of the turbine components [24].…”

“…It was found that a cooling intensification was reached for all cavity walls for a velocity range between 30 and 70 m/s. Heat transfer intensification through acoustic waves was further discussed by Rulik & Wróblewski [26] to understand the relation between the generated acoustic waves, from the cavity model used in [27], and the heat transfer intensification process. The heat transfer coefficients were obtained for all the cavity walls.…”

“…This modification led to a remarkable increase in the values of the heat transfer coefficient on the walls of the cavity, and especially on the bottom wall where the highest increase occurred. Moreover, Rulik et al studied the cavity size effect on acoustic wave generation and heat transfer phenomena [27]. They found that in general the cavity size reduction (with keeping the same aspect ratio) does not have a significant effect on heat transfer inside the cavity.…”

Numerical and Experimental Analysis of the Noise Generated in a Ducted Cavity Working in Various Conditions

“…The purpose of these works was and flow analysis using CFD methods, as well as analysis of heat transfer cond the case of heated cavities. The authors pointed to the relationship between th non-stationary effects generated within the cavity and the heat transfer condition studies were supplemented with partial validation of the applied CFD model, wh presented in [14]. However, these tests were limited to only one basic flow condit aim of this paper is to provide a detailed comparison of numerical and experim search, covering a wide range of flow conditions, including two basic modes o acoustic response along with the transition between these modes.…”

“…The authors pointed to the relationship between the strong non-stationary effects generated within the cavity and the heat transfer conditions. These studies were supplemented with partial validation of the applied CFD model, which was presented in [14]. However, these tests were limited to only one basic flow condition.…”