受压力梯度振荡影响的槽内流动速度分布的估计

K. Ahmed, Syed Irtiza Ali Shah
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引用次数: 0

摘要

在此工作中,用计算机程序计算了受振荡压力梯度影响的槽内流动的速度分布。从以往的工作和发现中,我们知道恒定压力梯度槽内的流动具有抛物线形状的速度分布。在这项工作中,我们在考虑的稳定梯度中加入了一个振动分量。此外,还分析了槽的速度变化和尺寸参数的变化。为了充分了解施加振动性质的压力梯度时的流动情况,捕获了不同时间和槽位的速度变化曲线图。中使用的Navier - Stokes方程和连续性方程保存在笛卡尔坐标系中。还考虑了流体的各种运动粘度对速度分布的影响。研究了槽内粘性区域的建立及其随流体粘度的变化规律。此外,还考虑了槽尺寸变化对速度分布的影响。本研究过程中提出的算法将帮助科研人员和学者完成计算,根据情境需求设计各种槽位。所得结果将有助于设计承受压力梯度振荡的槽和通道,也可用于预测工作时压力梯度的性质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Estimation of velocity profiles of flow in a slot subjected to oscillating pressure gradient
In this work velocity profiles have been calculated for a flow in a slot with a pressure gradient subjected to oscillations using a computer program. From previous work and findings, it is known that the flow in a slot with a constant pressure gradient has a velocity profile which forms a parabolic shape. In this work we add an vibratory component to the steady gradient under consideration. Moreover, the changes in velocities and changes in dimensional parameters of the slot has been analyzed. Graphs of velocity changes are captured for various time and slot stations in order to fully understand the flow when a pressure gradient of vibratory nature is applied. The Navier — Stokes and continuity equations in are used and are kept in the Cartesian coordinates. Changes in velocity profiles for various kinematic viscosity of the fluids are also taken into consideration. The establishment of the viscous region within the slot and its variation with respect to viscosity of the fluid is studied. Moreover, the variation in velocity profile with changing dimensions of the slot is also taken into consideration. The proposed algorithm formulated during the course of this research will enable and aid scientific investigators and academics to accomplish calculations to design various slots according to situational requirements. The results achieved will help in designing slots and channels which experience oscillation in pressure gradients and can also be used to predict the of nature of gradient at work.
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