Development of a new onset of nucleate boiling model for helical tubes

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 DOI:10.1016/j.icheatmasstransfer.2025.108885

Maolong Liu , Ziyi Xu , Cong Shen , Hanyang Gu

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引用次数: 0

Abstract

The flow inside a helical tube is influenced by the combined effects of centrifugal force and gravitational buoyancy, resulting in uneven circumferential heat transfer characteristics. This circumferential non-uniformity leads to a significant difference in the onset of nucleate boiling (ONB) compared to straight tubes. Currently, there are few studies on the ONB in helical tubes. This lack of high-precision prediction models significantly restricts the accuracy of heat transfer predictions for the helical tubes. The present study investigated the effects of circumferential non-uniform heat transfer characteristics on the ONB. It was found that the relative circumferential wall temperature in a helical tube during single-phase flow follows a trigonometric function distribution for the circumferential angle. A new empirical correlation was proposed to predict the circumferential wall temperature distribution in helical tubes in single-phase flow. Based on the new wall temperature distribution correlation, a new theoretical model for the ONB in helical tubes was proposed. The prediction error of the new ONB model is within ±10 %, which is superior to existing models.

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.