混合对流混合混合纳米流体流由一个倾斜的圆柱体与洛伦茨力诱导
Farizza Haniem Sohut1, Umair Khan1,2, Anuar Ishak1
1Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia.
Micromachines
|May 27, 2023
概括
混合纳米流体,如-铜,增强热传递,减少倾斜圆柱体的阻力. 这项研究探讨了它们在磁场和浮力力下的行为.
科学领域:
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
- 热传递是一种热传递.
背景情况:
- 混合纳米流体比传统纳米流体提供更优质的性能.
- 了解倾斜气中的流体流动对于各种工程应用至关重要.
研究的目的:
- 为了研究-铜混合纳米流体在倾斜圆柱体中的流动.
- 分析磁场和浮力力对流体行为的影响.
主要方法:
- 支配部分微分方程 (PDEs) 被转换为普通微分方程 (ODEs).
- 在 MATLAB 中使用 bvp4c 包获得了数值解决方案.
- 研究了诸如曲率,纳米粒子度,倾斜角度和磁场等参数的影响.
主要成果:
- 对于浮力辅助和反流的两种不同的解决方案被发现;当浮力不存在时,出现了一个独特的解决方案.
- 混合纳米流体与基础流体和普通纳米流体相比,显示出更好的传热效率.
- 通过混合纳米流体观察到阻力减少.
结论:
- 混合纳米流体,特别是-铜,显示了显著的潜力,提高了热性能和降低了流体阻力.
- 该研究提供了关于磁场,浮力和混合纳米流体流动中的流体动力学复杂相互作用的宝贵见解.
相关概念视频
Couette Flow
339
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...
339
Steady, Laminar Flow in Circular Tubes
264
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...
264
Steady, Laminar Flow Between Parallel Plates
248
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.
248
Laminar and Turbulent Flow
8.6K
Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
8.6K
Bernoulli's Equation for Flow Normal to a Streamline
912
Bernoulli's equation for flow normal to a streamline explains how pressure varies across curved streamlines due to the outward centrifugal forces induced by the fluid's curvature. The pressure is higher on the inner side of the curve, near the center of curvature, and decreases outward to balance these centrifugal forces.
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines.
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines.
912
Newtonian Fluid: Problem Solving
280
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
280


