RANS simulation of heat transfer in a mist turbulent flow over an obstacle

被引：0

作者：

Pakhomov, Maksim A. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Lab Thermal & Gas Dynam, Kutateladze Inst Thermophys, Lavrentev Ave 1, Novosibirsk 630090, Russia

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2024年 / 199卷

关键词：

Droplet -laden mist flow; Obstacle; Numerical modeling; Eulerian model; PARTICLE; MODEL; MODULATION; LADEN; TRANSPORT; CHANNEL; DROP;

D O I：

10.1016/j.ijthermalsci.2024.108913

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The numerical study of the flow and heat transfer in the two-phase mist flow over a single square obstacle is carried out using Eulerian two-fluid approach. The maximum value of the gas phase turbulence is obtained over the obstacle at x/h = -1-0, and it exceeds the values for the turbulence level before and after the obstacle by more than 50 %. The maximal turbulence suppression for the evaporating droplets in a turbulent stream is reached in the flow core of the channel and the minimal one is observed in the near-wall part. Turbulence suppression in the case of evaporating droplets is extremely low near the wall, and the level of turbulence tends to the corresponding value for the single-phase flow. Compared to the single-phase flow, an up to 15 % reduction in the gas turbulence is obtained. The predicted increase in heat transfer in the mist flow over the obstacle is over 1.5 times.

引用

页数：9

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