负压力梯度通道流动层流化数值模拟

IF 0.6 4区工程技术 Q4 MECHANICS

Fluid Dynamics Pub Date : 2025-07-20 DOI:10.1134/S0015462825601068

V. G. Lushchik, A. I. Reshmin

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引用次数: 0

摘要

采用三参数微分RANS湍流模型和湍流热流通量传递方程，对具有负压梯度的通道内的流动和换热进行了数值模拟。在较宽的雷诺数范围内，考虑了壁面倾角较小的平面收敛通道内的流动。本文研究了氦氙混合气体在热管中流动时的换热问题。估计了保证通道内湍流层压化的流动加速度参数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Numerical Modeling of Flow Laminarization in Channels with a Negative Pressure Gradient

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Numerical Modeling of Flow Laminarization in Channels with a Negative Pressure Gradient

The flow and heat transfer in channels with a negative pressure gradient are numerically simulated using a three-parameter differential RANS turbulence model supplemented with a transfer equation for a turbulent heat flux. The flow in a planar converging channel with a small wall inclination angle is considered in a wide range of Reynolds numbers. Heat transfer in the flow of a helium-xenon gas mixture in a heated pipe is studied in a wide range of heat fluxes into the pipe wall. The flow acceleration parameter that ensures laminarization of the turbulent flow in the channel is estimated.

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来源期刊

Fluid Dynamics MECHANICS-PHYSICS, FLUIDS & PLASMAS

CiteScore

1.30

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.