达西·福奇海默 (Darcy Forchheimer) 基于CMC水的混合纳米流体的流动是由于旋转的可拉伸磁盘导致的
Farhan Ali1, Muhammad Arif2, Muhammad Faizan1
1Department of Mathematical Sciences, Federal Urdu University of Arts, Sciences & Technology, Gulshan-e-Iqbal Karachi, 75300, Pakistan.
Heliyon
|July 17, 2023
概括
这项研究分析了纳米粒子在CMC-水流体中的Darcy Forchheimer流,考虑了热辐射和对流. 增加旋转增强速度,而福克海默数则具有相反的效果.
科学领域:
- 流体动力学 流体动力学
- 纳米技术 纳米技术
- 热量和质量转移是热量和质量转移.
背景情况:
- 旋转盘上的流体流动在汽车制动系统,燃气轮机和制造业中具有多样化的应用.
- 纳米粒子悬浮在先进的材料应用和热管理中至关重要.
研究的目的:
- 为了研究在CMC-水混合流体中悬浮的纳米颗粒的三维Darcy Forchheimer流.
- 分析热辐射,对流边界条件,布朗运动和热泳对流体流动和热量转移的影响.
主要方法:
- 布昂吉奥诺模型被用来解释布朗运动和热泳效应.
- 使用适当的转换,导出了管理的非维方程.
- 在数值计算中使用了Matlab的BVP4c解决器.
- 通过图形表示来分析速度,温度和度概况.
主要成果:
- 旋转参数的增加增强了辐射和轴向速度.
- 福克海默数表现出与速度的逆关系.
- 热辐射和对流显著影响温度和度分布.
- 布朗运动和热泳在纳米粒子运输中起着至关重要的作用.
结论:
- 该研究提供了关于各种参数的复杂相互作用的见解,这些参数控制了旋转磁盘系统中的纳米流体流动.
- 对工程数量的数值评估,如拉力和热量/质量转移率,为应用提供了实际数据.
- 这些发现与利用纳米流体的旋盘技术的行业优化流程有关.
相关概念视频
Couette Flow
328
Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
328
Steady, Laminar Flow Between Parallel Plates
243
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
243
Steady, Laminar Flow in Circular Tubes
259
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...
259
Fluid Pressure over Curved Plate of Constant Width
1.6K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.6K
Capillarity in Fluid
266
Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
266
Accelerating Fluids
1.1K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
1.1K


