列扁管不同迎角气流的CFD模拟分析

IF 1.1 Q4 THERMODYNAMICS

Frontiers in Heat and Mass Transfer Pub Date : 2022-09-01 DOI:10.5098/hmt.19.6

O. Younis, F. Rashid, S. K. Fakhrulddin, Muhammad Asmail Eleiwi, A. Hussein, T. A. Tahseen, Mohammed Ibrahim Ahmed

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引用次数: 2

摘要

数值分析了四种不同迎锋面气流的平板管的强化传热和层流流动特性。从雷诺数、热流密度和倾斜角度研究了平板管的传热特性。研究了四种雷诺数(100、200、300和400)，管表面热流分别为(1000、2500、3800 W/ m2)，四根扁平管的倾角分别为(30°、45°、90°)。ANSYS Fluent软件v.18在指定的控制体积上使用有限体积方法对控制方程进行离散和求解。根据现有的数据，使用平管增加了通道内的传热。当使用导管时，再附着距离缩短。当雷诺数由100增加到300时，传热强化率由40.8%提高到55.79%，热流密度增加24.99%。

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CFD SIMULATION IN THERMAL-HYDRAULIC ANALYSIS OF AIRFLOW ON DIFFERENT ATTACK ANGLES OF ROW FLAT TUBE

The current study numerically analyzes the heat transfer enhancement and laminar fluid flow characteristics of four flat tubes with varying attack front airflow. The heat transfer characteristics of flat tubes are investigated in terms of Reynolds number, heat fluxes, and inclination angle. Four Reynolds numbers are studied (100, 200, 300, and 400), and three heat fluxes on the surface of the tubes are (1000, 2500, 3800 W/m 2 ), the inclination angle of the four flat tubes are (30 o , 45 o , 90 o ). ANSYS Fluent software v.18 discretizes and solves the governing equations using the finite volume approach across a specified control volume. According to the available data, using flat tubes increases the heat transfer in the channel. When tubes were used, the reattachment distance was reduced. When the Reynolds number is changed from 100 to 300, the heat transfer enhancement rises from 40.8 % to 55.79 % for the increase in the heat flux of 24.99 %.

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来源期刊

Frontiers in Heat and Mass Transfer THERMODYNAMICS-

CiteScore

2.50

自引率

61.10%

发文量

审稿时长

10 weeks

期刊介绍： Frontiers in Heat and Mass Transfer is a free-access and peer-reviewed online journal that provides a central vehicle for the exchange of basic ideas in heat and mass transfer between researchers and engineers around the globe. It disseminates information of permanent interest in the area of heat and mass transfer. Theory and fundamental research in heat and mass transfer, numerical simulations and algorithms, experimental techniques and measurements as applied to all kinds of current and emerging problems are welcome. Contributions to the journal consist of original research on heat and mass transfer in equipment, thermal systems, thermodynamic processes, nanotechnology, biotechnology, information technology, energy and power applications, as well as security and related topics.