Finite Volume Method Modeling of Heat Transfer in Acoustic Enclosure for Machinery

Abstract

This paper deals with the problem of heat accumulation in acoustic enclosures. Increased noise levels at production sites or manufacturing lines force the application of acoustic enclosures. Effective noise reduction due to enclosures often comes with the additional thermal insulation of the device, which in many cases causes a strong increase in the device operation temperature. This paper presents the methodology of thermal phenomena numerical modeling based on the potential influence of acoustic enclosures on the increase in device operation temperature. The proposed model consists of an original acoustic enclosure concept design, and the numerical modeling is based on the computational fluid dynamics FVM (finite volume method) conducted in Ansys Fluent. The research comprised a set of simulations at different air flow rates of 52.5 m3/h, 105 m3/h, 210 m3/h and 420 m3/h at the enclosure inlet. The analysis carried out on the basis of flow paths and temperature distribution plots inside the enclosure led to the conclusion that the expected, analytically calculated minimum volumetric flow rate is not sufficient to effectively cool the investigated device to the required temperature of 26 °C, and higher air flow rates should be applied. Simulation results indicated that the numerical tools can be useful in the prediction of the heat exchange process, as well as in the selection of an appropriate source and location of cooling.

Related factors of perioperative low body temperature and incidence of postoperative shivering in patients undergoing complex percutaneous nephrolithotomy and the effect analysis of composite insulation nursing intervention

“…Rational control of fluid output and medication use, particularly the frequency and dosage of cooling medications, can also alleviate intraoperative temperature decline [ 33 ]. Enhancing intraoperative nursing measures, such as actively massaging patients to stimulate heat production from the body surface and raise body temperature, can further reduce the incidence of intraoperative hypothermia [ 34 ]. In this study, the use of comprehensive thermal care measures in the Nur group significantly improved the quality and safety of surgical nursing, effectively reducing unnecessary risks and lowering the risk of postoperative complications.…”